diff --git a/static/js/editor-format.js b/static/js/editor-format.js
index 1b7e652..24cc039 100644
--- a/static/js/editor-format.js
+++ b/static/js/editor-format.js
@@ -13,7 +13,10 @@ export function applyFormat(editor, format) {
   if (format === "bold") wrap("**");
   if (format === "italic") wrap("*");
   if (format === "strike") wrap("~~");
-  if (format === "heading") prefix("## ");
+  if (format === "heading" || format === "heading2") prefix("## ");
+  if (format === "heading1") prefix("# ");
+  if (format === "heading3") prefix("### ");
+  if (format === "heading4") prefix("#### ");
   if (format === "bullet") prefix("- ");
   if (format === "number") prefix((index) => `${index + 1}. `);
   if (format === "quote") prefix("> ");
diff --git a/static/js/note.js b/static/js/note.js
index a09eef4..d0c408f 100644
--- a/static/js/note.js
+++ b/static/js/note.js
@@ -9,22 +9,41 @@ import { currentShareUrl, readEditorState, writeEditorState } from "@rustpad/url
 const parts=location.pathname.split("/").filter(Boolean), workspaceSlug=parts[1], noteSlug=parts[3];
 const editor=document.querySelector("#editor"), preview=document.querySelector("#preview"), editorWorkspace=document.querySelector("#editor-workspace"), gutter=document.querySelector("#line-gutter"), ownerLabels=document.querySelector("#owner-labels");
 const modeToggle=document.querySelector("#mode-toggle"), passwordDialog=document.querySelector("#password-dialog"), identityDialog=document.querySelector("#identity-dialog");
+const compactToggle=document.querySelector("#compact-toggle"), fontFamily=document.querySelector("#font-family"), fontSize=document.querySelector("#font-size");
 let password=getPassword(workspaceSlug), nickname=getNickname(), info, socket, saveTimer, applyingRemote=false, uiState=readEditorState(), owners=[];
 const lineToggle=document.querySelector("#line-numbers-toggle"); lineToggle.checked=localStorage.getItem("rustpad:line-numbers")!=="off";
+compactToggle.checked=localStorage.getItem("rustpad:compact")==="on";
+fontFamily.value=localStorage.getItem("rustpad:font-family")||"mono";
+fontSize.value=localStorage.getItem("rustpad:font-size")||"18";
 function colorFor(name){let h=0;for(const c of name||"?")h=(h*31+c.charCodeAt(0))%360;return `hsl(${h} 70% 62%)`;}
 function toast(text){const el=document.querySelector("#toast");el.textContent=text;el.classList.add("visible");setTimeout(()=>el.classList.remove("visible"),1800);}
 function setStatus(kind,text){document.querySelector("#status-dot").className=`status__dot${kind?` is-${kind}`:""}`;document.querySelector("#status-text").textContent=text;}
 function updateAddressLabel(){document.querySelector("#note-url").textContent=`${location.pathname}${location.search}`;}
 async function renderMermaid(){const nodes=preview.querySelectorAll(".mermaid");if(!nodes.length)return;try{const {default:mermaid}=await import("https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs");mermaid.initialize({startOnLoad:false,theme:"dark",securityLevel:"strict"});await mermaid.run({nodes:[...nodes]});}catch{nodes.forEach(n=>n.insertAdjacentHTML("beforebegin",'<p class="error">Failed to load Mermaid.</p>'));}}
-function renderGutter(){const lines=editor.value.split("\n");owners=owners.slice(0,lines.length);while(owners.length<lines.length)owners.push(owners.at(-1)||nickname||"");gutter.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";return `<div title="${escapeHtml(owner||"no author")}" style="--owner:${colorFor(owner)}">${i+1}</div>`;}).join("");const style=getComputedStyle(editor),lineHeight=parseFloat(style.lineHeight)||29.24,paddingTop=parseFloat(style.paddingTop)||24;ownerLabels.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";if(!owner||owner===owners[i-1])return "";const top=paddingTop+i*lineHeight-editor.scrollTop;return `<span class="owner-label" style="top:${top}px;--owner:${colorFor(owner)}">${escapeHtml(owner)}</span>`;}).join("");document.body.classList.toggle("hide-line-numbers",!lineToggle.checked);}
+function renderGutter(){
+  const lines=editor.value.split("\n");
+  owners=owners.slice(0,lines.length);
+  while(owners.length<lines.length)owners.push(owners.at(-1)||nickname||"");
+  gutter.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";return `<div title="${escapeHtml(owner||"no author")}" style="--owner:${colorFor(owner)}">${i+1}</div>`;}).join("");
+  const style=getComputedStyle(editor), lineHeight=parseFloat(style.lineHeight)||29, paddingTop=parseFloat(style.paddingTop)||24;
+  ownerLabels.style.setProperty("--editor-line-height",`${lineHeight}px`);
+  ownerLabels.innerHTML=lines.map((_,i)=>{
+    const owner=owners[i]||"";
+    if(!owner)return "";
+    const top=paddingTop+i*lineHeight-editor.scrollTop;
+    const label=owner!==owners[i-1]?`<span class="owner-label" style="top:${top}px;--owner:${colorFor(owner)}">${escapeHtml(owner)}</span>`:"";
+    return `<span class="owner-line" style="top:${top}px;--owner:${colorFor(owner)}"></span>${label}`;
+  }).join("");
+  document.body.classList.toggle("hide-line-numbers",!lineToggle.checked);
+}
 function escapeHtml(v){return String(v).replace(/[&<>"']/g,c=>({"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"}[c]));}function formatDate(value){const raw=String(value??"").trim();let normalized=raw;if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}$/.test(normalized))normalized=normalized.replace(" ","T")+":00";else if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}:\d{2}$/.test(normalized))normalized=normalized.replace(" ","T");else if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?$/.test(normalized))normalized=normalized.replace(" ","T")+"Z";const date=new Date(normalized);return Number.isNaN(date.getTime())?raw:date.toLocaleString("pl-PL",{year:"numeric",month:"2-digit",day:"2-digit",hour:"2-digit",minute:"2-digit",second:"2-digit"});}
 function render(){if(uiState.mode==="markdown"){preview.classList.remove("preview--raw");preview.innerHTML=renderMarkdown(editor.value);document.querySelector("#preview-label").textContent="Markdown + Mermaid preview";renderMermaid();}else{preview.classList.add("preview--raw");preview.textContent=editor.value;document.querySelector("#preview-label").textContent="Source text";}document.querySelector("#characters").textContent=`${editor.value.length} characters`;document.querySelector("#words").textContent=`${editor.value.trim()?editor.value.trim().split(/\s+/).length:0} words`;renderGutter();}
-function applyUi({write=false,replace=false}={}){editorWorkspace.className=`workspace view-${uiState.view}`;document.querySelectorAll("[data-view]").forEach(b=>{const a=b.dataset.view===uiState.view;b.classList.toggle("active",a);b.setAttribute("aria-pressed",String(a));});const markdown=uiState.mode==="markdown";modeToggle.classList.toggle("active",markdown);modeToggle.textContent=markdown?"Markdown":"Text";render();if(write)writeEditorState(uiState,{replace});updateAddressLabel();}
+function applyUi({write=false,replace=false}={}){editorWorkspace.className=`workspace view-${uiState.view} editor-workspace-font-${fontFamily.value}`;editorWorkspace.style.setProperty("--editor-font-size",`${fontSize.value}px`);document.body.classList.toggle("compact-editor",compactToggle.checked);document.querySelectorAll("[data-view]").forEach(b=>{const a=b.dataset.view===uiState.view;b.classList.toggle("active",a);b.setAttribute("aria-pressed",String(a));});const markdown=uiState.mode==="markdown";modeToggle.classList.toggle("active",markdown);modeToggle.textContent=markdown?"Markdown":"Text";render();if(write)writeEditorState(uiState,{replace});updateAddressLabel();}
 function applyRemote(content,ownerMap){if(content===editor.value&&ownerMap==null)return;const start=editor.selectionStart,end=editor.selectionEnd;applyingRemote=true;editor.value=content;try{owners=JSON.parse(ownerMap||"[]");}catch{owners=[];}editor.setSelectionRange(Math.min(start,content.length),Math.min(end,content.length));applyingRemote=false;render();}
 function connect(){socket?.stop();socket=new NoteSocket({workspaceSlug,noteSlug,password,nickname,onStatus:s=>setStatus(s==="online"?"online":s==="offline"?"offline":null,s==="online"?"Connected":s==="offline"?"Reconnecting…":"Connecting…"),onAuthenticated:m=>{if(passwordDialog.open)passwordDialog.close();applyRemote(m.content,m.owner_map);editor.focus();},onDocument:m=>{applyRemote(m.content,m.owner_map);document.querySelector("#save-state").textContent=`${m.author?`${m.author} · `:""}${new Date(m.updated_at).toLocaleTimeString("en-US",{hour:"2-digit",minute:"2-digit"})}`;},onError:m=>{document.querySelector("#password-error").textContent=m;if(info?.protected&&!passwordDialog.open)passwordDialog.showModal();}});socket.connect();}
 async function initialize(){try{info=await api(`/api/workspaces/${encodeURIComponent(workspaceSlug)}/notes/${encodeURIComponent(noteSlug)}`);document.querySelector("#back-workspace").href=`/w/${encodeURIComponent(workspaceSlug)}`;document.title=`${info.title} · ${info.workspace_title}`;applyUi({write:true,replace:true});if(!nickname){identityDialog.showModal();return;}document.querySelector("#current-user").textContent=nickname;document.querySelector("#current-user").style.setProperty("--owner",colorFor(nickname));if(info.protected&&!password)passwordDialog.showModal();else connect();}catch(e){document.body.innerHTML=`<main class="error-page"><div><h1>Note not found</h1><p>${escapeHtml(e.message)}</p></div></main>`;}}
 document.querySelector("#identity-form").addEventListener("submit",e=>{e.preventDefault();nickname=document.querySelector("#nickname").value.trim();setNickname(nickname);identityDialog.close();document.querySelector("#current-user").textContent=nickname;document.querySelector("#current-user").style.setProperty("--owner",colorFor(nickname));if(info.protected&&!password)passwordDialog.showModal();else connect();});
-document.querySelectorAll("[data-view]").forEach(b=>b.addEventListener("click",()=>{uiState={...uiState,view:b.dataset.view};applyUi({write:true});}));modeToggle.addEventListener("click",()=>{uiState={...uiState,mode:uiState.mode==="markdown"?"text":"markdown"};applyUi({write:true});});lineToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:line-numbers",lineToggle.checked?"on":"off");renderGutter();});
+document.querySelectorAll("[data-view]").forEach(b=>b.addEventListener("click",()=>{uiState={...uiState,view:b.dataset.view};applyUi({write:true});}));modeToggle.addEventListener("click",()=>{uiState={...uiState,mode:uiState.mode==="markdown"?"text":"markdown"};applyUi({write:true});});lineToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:line-numbers",lineToggle.checked?"on":"off");renderGutter();});compactToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:compact",compactToggle.checked?"on":"off");applyUi();});fontFamily.addEventListener("change",()=>{localStorage.setItem("rustpad:font-family",fontFamily.value);applyUi();});fontSize.addEventListener("change",()=>{localStorage.setItem("rustpad:font-size",fontSize.value);applyUi();});
 window.addEventListener("popstate",()=>{uiState=readEditorState();applyUi();});window.addEventListener("rustpad:urlchange",updateAddressLabel);document.querySelector("#copy-link").addEventListener("click",async()=>{try{await copyText(currentShareUrl(uiState));toast("Link copied");}catch(e){toast(e.message);}});document.querySelectorAll("[data-format]").forEach(b=>b.addEventListener("click",()=>applyFormat(editor,b.dataset.format)));
 document.querySelector("#publish-page").addEventListener("click",async()=>{try{const result=await api(`/api/workspaces/${encodeURIComponent(workspaceSlug)}/notes/${encodeURIComponent(noteSlug)}/publish`,{method:"POST",body:JSON.stringify({password:password||null})});const url=new URL(result.url,location.origin).href;await copyText(url);toast("Page link copied");window.open(url,"_blank","noopener");}catch(error){toast(error.message);}});
 editor.addEventListener("scroll",()=>{gutter.scrollTop=editor.scrollTop;renderGutter();});editor.addEventListener("input",()=>{const newLines=editor.value.split("\n").length;const cursorLine=editor.value.slice(0,editor.selectionStart).split("\n").length-1;while(owners.length<newLines)owners.push(nickname);owners=owners.slice(0,newLines);owners[cursorLine]=nickname;render();if(applyingRemote)return;clearTimeout(saveTimer);document.querySelector("#save-state").textContent="Saving…";saveTimer=setTimeout(()=>socket?.update(editor.value,JSON.stringify(owners)),250);});
diff --git a/static/js/pad.js b/static/js/pad.js
index de71540..2795573 100644
--- a/static/js/pad.js
+++ b/static/js/pad.js
@@ -9,22 +9,41 @@ import { currentShareUrl, readEditorState, writeEditorState } from "@rustpad/url
 const slug=location.pathname.split("/").filter(Boolean)[1];
 const editor=document.querySelector("#editor"), preview=document.querySelector("#preview"), editorWorkspace=document.querySelector("#editor-workspace"), gutter=document.querySelector("#line-gutter"), ownerLabels=document.querySelector("#owner-labels");
 const modeToggle=document.querySelector("#mode-toggle"), passwordDialog=document.querySelector("#password-dialog"), identityDialog=document.querySelector("#identity-dialog");
+const compactToggle=document.querySelector("#compact-toggle"), fontFamily=document.querySelector("#font-family"), fontSize=document.querySelector("#font-size");
 let password=sessionStorage.getItem(`rustpad:pad:${slug}:password`)||"", nickname=getNickname(), info, socket, saveTimer, applyingRemote=false, uiState=readEditorState(), owners=[];
 const lineToggle=document.querySelector("#line-numbers-toggle"); lineToggle.checked=localStorage.getItem("rustpad:line-numbers")!=="off";
+compactToggle.checked=localStorage.getItem("rustpad:compact")==="on";
+fontFamily.value=localStorage.getItem("rustpad:font-family")||"mono";
+fontSize.value=localStorage.getItem("rustpad:font-size")||"18";
 function colorFor(name){let h=0;for(const c of name||"?")h=(h*31+c.charCodeAt(0))%360;return `hsl(${h} 70% 62%)`;}
 function toast(text){const el=document.querySelector("#toast");el.textContent=text;el.classList.add("visible");setTimeout(()=>el.classList.remove("visible"),1800);}
 function setStatus(kind,text){document.querySelector("#status-dot").className=`status__dot${kind?` is-${kind}`:""}`;document.querySelector("#status-text").textContent=text;}
 function updateAddressLabel(){document.querySelector("#pad-url").textContent=`${location.pathname}${location.search}`;}
 async function renderMermaid(){const nodes=preview.querySelectorAll(".mermaid");if(!nodes.length)return;try{const {default:mermaid}=await import("https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs");mermaid.initialize({startOnLoad:false,theme:"dark",securityLevel:"strict"});await mermaid.run({nodes:[...nodes]});}catch{nodes.forEach(n=>n.insertAdjacentHTML("beforebegin",'<p class="error">Failed to load Mermaid.</p>'));}}
-function renderGutter(){const lines=editor.value.split("\n");owners=owners.slice(0,lines.length);while(owners.length<lines.length)owners.push(owners.at(-1)||nickname||"");gutter.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";return `<div title="${escapeHtml(owner||"no author")}" style="--owner:${colorFor(owner)}">${i+1}</div>`;}).join("");const style=getComputedStyle(editor),lineHeight=parseFloat(style.lineHeight)||29.24,paddingTop=parseFloat(style.paddingTop)||24;ownerLabels.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";if(!owner||owner===owners[i-1])return "";const top=paddingTop+i*lineHeight-editor.scrollTop;return `<span class="owner-label" style="top:${top}px;--owner:${colorFor(owner)}">${escapeHtml(owner)}</span>`;}).join("");document.body.classList.toggle("hide-line-numbers",!lineToggle.checked);}
+function renderGutter(){
+  const lines=editor.value.split("\n");
+  owners=owners.slice(0,lines.length);
+  while(owners.length<lines.length)owners.push(owners.at(-1)||nickname||"");
+  gutter.innerHTML=lines.map((_,i)=>{const owner=owners[i]||"";return `<div title="${escapeHtml(owner||"no author")}" style="--owner:${colorFor(owner)}">${i+1}</div>`;}).join("");
+  const style=getComputedStyle(editor), lineHeight=parseFloat(style.lineHeight)||29, paddingTop=parseFloat(style.paddingTop)||24;
+  ownerLabels.style.setProperty("--editor-line-height",`${lineHeight}px`);
+  ownerLabels.innerHTML=lines.map((_,i)=>{
+    const owner=owners[i]||"";
+    if(!owner)return "";
+    const top=paddingTop+i*lineHeight-editor.scrollTop;
+    const label=owner!==owners[i-1]?`<span class="owner-label" style="top:${top}px;--owner:${colorFor(owner)}">${escapeHtml(owner)}</span>`:"";
+    return `<span class="owner-line" style="top:${top}px;--owner:${colorFor(owner)}"></span>${label}`;
+  }).join("");
+  document.body.classList.toggle("hide-line-numbers",!lineToggle.checked);
+}
 function escapeHtml(v){return String(v).replace(/[&<>"']/g,c=>({"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"}[c]));}function formatDate(value){const raw=String(value??"").trim();let normalized=raw;if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}$/.test(normalized))normalized=normalized.replace(" ","T")+":00";else if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}:\d{2}$/.test(normalized))normalized=normalized.replace(" ","T");else if(/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?$/.test(normalized))normalized=normalized.replace(" ","T")+"Z";const date=new Date(normalized);return Number.isNaN(date.getTime())?raw:date.toLocaleString("pl-PL",{year:"numeric",month:"2-digit",day:"2-digit",hour:"2-digit",minute:"2-digit",second:"2-digit"});}
 function render(){if(uiState.mode==="markdown"){preview.classList.remove("preview--raw");preview.innerHTML=renderMarkdown(editor.value);document.querySelector("#preview-label").textContent="Markdown + Mermaid preview";renderMermaid();}else{preview.classList.add("preview--raw");preview.textContent=editor.value;document.querySelector("#preview-label").textContent="Source text";}document.querySelector("#characters").textContent=`${editor.value.length} characters`;document.querySelector("#words").textContent=`${editor.value.trim()?editor.value.trim().split(/\s+/).length:0} words`;renderGutter();}
-function applyUi({write=false,replace=false}={}){editorWorkspace.className=`workspace view-${uiState.view}`;document.querySelectorAll("[data-view]").forEach(b=>{const a=b.dataset.view===uiState.view;b.classList.toggle("active",a);b.setAttribute("aria-pressed",String(a));});const markdown=uiState.mode==="markdown";modeToggle.classList.toggle("active",markdown);modeToggle.textContent=markdown?"Markdown":"Text";render();if(write)writeEditorState(uiState,{replace});updateAddressLabel();}
+function applyUi({write=false,replace=false}={}){editorWorkspace.className=`workspace view-${uiState.view} editor-workspace-font-${fontFamily.value}`;editorWorkspace.style.setProperty("--editor-font-size",`${fontSize.value}px`);document.body.classList.toggle("compact-editor",compactToggle.checked);document.querySelectorAll("[data-view]").forEach(b=>{const a=b.dataset.view===uiState.view;b.classList.toggle("active",a);b.setAttribute("aria-pressed",String(a));});const markdown=uiState.mode==="markdown";modeToggle.classList.toggle("active",markdown);modeToggle.textContent=markdown?"Markdown":"Text";render();if(write)writeEditorState(uiState,{replace});updateAddressLabel();}
 function applyRemote(content,ownerMap){if(content===editor.value&&ownerMap==null)return;const start=editor.selectionStart,end=editor.selectionEnd;applyingRemote=true;editor.value=content;try{owners=JSON.parse(ownerMap||"[]");}catch{owners=[];}editor.setSelectionRange(Math.min(start,content.length),Math.min(end,content.length));applyingRemote=false;render();}
 function connect(){socket?.stop();socket=new PadSocket({slug,password,nickname,onStatus:s=>setStatus(s==="online"?"online":s==="offline"?"offline":null,s==="online"?"Connected":s==="offline"?"Reconnecting…":"Connecting…"),onAuthenticated:m=>{if(passwordDialog.open)passwordDialog.close();applyRemote(m.content,m.owner_map);editor.focus();},onDocument:m=>{applyRemote(m.content,m.owner_map);document.querySelector("#save-state").textContent=`${m.author?`${m.author} · `:""}${new Date(m.updated_at).toLocaleTimeString("en-US",{hour:"2-digit",minute:"2-digit"})}`;},onError:m=>{document.querySelector("#password-error").textContent=m;if(info?.protected&&!passwordDialog.open)passwordDialog.showModal();}});socket.connect();}
 async function initialize(){try{info=await api(`/api/pads/${encodeURIComponent(slug)}`);document.title=`${info.title} · RustPad`;applyUi({write:true,replace:true});if(!nickname){identityDialog.showModal();return;}document.querySelector("#current-user").textContent=nickname;document.querySelector("#current-user").style.setProperty("--owner",colorFor(nickname));if(info.protected&&!password)passwordDialog.showModal();else connect();}catch(e){document.body.innerHTML=`<main class="error-page"><div><h1>Note not found</h1><p>${escapeHtml(e.message)}</p></div></main>`;}}
 document.querySelector("#identity-form").addEventListener("submit",e=>{e.preventDefault();nickname=document.querySelector("#nickname").value.trim();setNickname(nickname);identityDialog.close();document.querySelector("#current-user").textContent=nickname;document.querySelector("#current-user").style.setProperty("--owner",colorFor(nickname));if(info.protected&&!password)passwordDialog.showModal();else connect();});
-document.querySelectorAll("[data-view]").forEach(b=>b.addEventListener("click",()=>{uiState={...uiState,view:b.dataset.view};applyUi({write:true});}));modeToggle.addEventListener("click",()=>{uiState={...uiState,mode:uiState.mode==="markdown"?"text":"markdown"};applyUi({write:true});});lineToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:line-numbers",lineToggle.checked?"on":"off");renderGutter();});
+document.querySelectorAll("[data-view]").forEach(b=>b.addEventListener("click",()=>{uiState={...uiState,view:b.dataset.view};applyUi({write:true});}));modeToggle.addEventListener("click",()=>{uiState={...uiState,mode:uiState.mode==="markdown"?"text":"markdown"};applyUi({write:true});});lineToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:line-numbers",lineToggle.checked?"on":"off");renderGutter();});compactToggle.addEventListener("change",()=>{localStorage.setItem("rustpad:compact",compactToggle.checked?"on":"off");applyUi();});fontFamily.addEventListener("change",()=>{localStorage.setItem("rustpad:font-family",fontFamily.value);applyUi();});fontSize.addEventListener("change",()=>{localStorage.setItem("rustpad:font-size",fontSize.value);applyUi();});
 window.addEventListener("popstate",()=>{uiState=readEditorState();applyUi();});window.addEventListener("rustpad:urlchange",updateAddressLabel);document.querySelector("#copy-link").addEventListener("click",async()=>{try{await copyText(currentShareUrl(uiState));toast("Link copied");}catch(e){toast(e.message);}});document.querySelectorAll("[data-format]").forEach(b=>b.addEventListener("click",()=>applyFormat(editor,b.dataset.format)));
 document.querySelector("#publish-page").addEventListener("click",async()=>{try{const result=await api(`/api/pads/${encodeURIComponent(slug)}/publish`,{method:"POST",body:JSON.stringify({password:password||null})});const url=new URL(result.url,location.origin).href;await copyText(url);toast("Page link copied");window.open(url,"_blank","noopener");}catch(error){toast(error.message);}});
 editor.addEventListener("scroll",()=>{gutter.scrollTop=editor.scrollTop;renderGutter();});editor.addEventListener("input",()=>{const newLines=editor.value.split("\n").length;const cursorLine=editor.value.slice(0,editor.selectionStart).split("\n").length-1;while(owners.length<newLines)owners.push(nickname);owners=owners.slice(0,newLines);owners[cursorLine]=nickname;render();if(applyingRemote)return;clearTimeout(saveTimer);document.querySelector("#save-state").textContent="Saving…";saveTimer=setTimeout(()=>socket?.update(editor.value,JSON.stringify(owners)),250);});
diff --git a/static/note.html b/static/note.html
index dbf8f0e..11fd302 100644
--- a/static/note.html
+++ b/static/note.html
@@ -1,5 +1,5 @@
 <!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><meta name="color-scheme" content="dark"><title>__NOTE_TITLE__ · RustPad</title><link rel="stylesheet" href="/assets/styles.css?v=__ASSET_VERSION__"><script type="importmap">{"imports":{"@rustpad/api":"/assets/js/api.js?v=__ASSET_VERSION__","@rustpad/clipboard":"/assets/js/clipboard.js?v=__ASSET_VERSION__","@rustpad/editor-format":"/assets/js/editor-format.js?v=__ASSET_VERSION__","@rustpad/markdown":"/assets/js/markdown.js?v=__ASSET_VERSION__","@rustpad/session":"/assets/js/session.js?v=__ASSET_VERSION__","@rustpad/socket":"/assets/js/socket.js?v=__ASSET_VERSION__","@rustpad/url-state":"/assets/js/url-state.js?v=__ASSET_VERSION__"}}</script><script type="module" src="/assets/js/note.js?v=__ASSET_VERSION__"></script></head>
 <body class="pad-page"><header class="app-header"><div class="app-header__main"><a id="workspace-link" class="brand" href="/w/__WORKSPACE_SLUG__">__WORKSPACE_TITLE__</a><span class="header-divider"></span><div class="document-heading"><h1 id="note-title">__NOTE_TITLE__</h1><p id="note-url" class="document-url"></p></div></div><div class="header-actions"><span id="current-user" class="user-chip"></span><div class="status"><span id="status-dot" class="status__dot"></span><span id="status-text">Connecting…</span></div><button id="copy-link" class="secondary-button">Copy link</button><button id="publish-page" class="secondary-button">Page</button><button id="history-button" class="secondary-button">History</button></div></header>
-<main class="editor-layout"><section class="editor-panel"><div class="editor-toolbar"><div class="toolbar-group"><button data-format="bold"><strong>B</strong></button><button data-format="italic"><em>I</em></button><button data-format="strike"><s>S</s></button><button data-format="heading">H2</button><button data-format="bullet">• List</button><button data-format="number">1. List</button><button data-format="quote">Quote</button><button data-format="link">Link</button></div><button id="upload-button" class="toolbar-action">Image/file</button><input id="file-input" type="file" hidden><label class="line-toggle"><input id="line-numbers-toggle" type="checkbox" checked> Lines</label><div class="toolbar-fill"></div><button id="mode-toggle" class="markdown-toggle active" aria-pressed="true">Markdown</button><div class="view-switch"><button data-view="edit">Edit</button><button data-view="split" class="active">Split</button><button data-view="preview">Preview</button></div></div><div id="editor-workspace" class="workspace view-split"><div class="editor-column"><div class="column-label">Editor</div><div class="editor-shell"><div id="line-gutter" class="line-gutter" aria-hidden="true"></div><div id="owner-labels" class="owner-labels" aria-hidden="true"></div><textarea id="editor" placeholder="Start writing…" spellcheck="false"></textarea></div></div><div class="preview-column"><div id="preview-label" class="column-label">Markdown preview</div><article id="preview" class="preview markdown-body"></article></div></div><footer class="editor-footer"><div><span id="characters">0 characters</span> · <span id="words">0 words</span></div><span id="save-state">Changes are saved automatically</span></footer></section><aside id="history-panel" class="history-panel" aria-hidden="true"><div class="history-header"><div><h2>Change history</h2><p>Author, time, and version preview</p></div><button id="close-history" class="icon-button">×</button></div><div id="history-list" class="history-list"></div></aside></main>
+<main class="editor-layout"><section class="editor-panel"><div class="editor-toolbar"><div class="toolbar-group"><button data-format="bold" title="Bold"><strong>B</strong></button><button data-format="italic" title="Italic"><em>I</em></button><button data-format="strike" title="Strikethrough"><s>S</s></button><button data-format="heading1">H1</button><button data-format="heading2">H2</button><button data-format="heading3">H3</button><button data-format="heading4">H4</button><button data-format="bullet">• List</button><button data-format="number">1. List</button><button data-format="quote">Quote</button><button data-format="link">Link</button></div><div class="editor-controls"><label>Font<select id="font-family"><option value="mono">Mono</option><option value="system">System</option><option value="serif">Serif</option><option value="arial">Arial</option><option value="georgia">Georgia</option></select></label><label>Size<select id="font-size"><option value="14">14</option><option value="16">16</option><option value="18" selected>18</option><option value="20">20</option><option value="22">22</option></select></label></div><button id="upload-button" class="toolbar-action">Image/file</button><input id="file-input" type="file" hidden><label class="line-toggle"><input id="line-numbers-toggle" type="checkbox" checked> Lines</label><label class="line-toggle"><input id="compact-toggle" type="checkbox"> Compact</label><div class="toolbar-fill"></div><button id="mode-toggle" class="markdown-toggle active" aria-pressed="true">Markdown</button><div class="view-switch"><button data-view="edit">Edit</button><button data-view="split" class="active">Split</button><button data-view="preview">Preview</button></div></div><div id="editor-workspace" class="workspace view-split"><div class="editor-column"><div class="column-label">Editor</div><div class="editor-shell"><div id="line-gutter" class="line-gutter" aria-hidden="true"></div><div id="owner-labels" class="owner-labels" aria-hidden="true"></div><textarea id="editor" placeholder="Start writing…" spellcheck="false"></textarea></div></div><div class="preview-column"><div id="preview-label" class="column-label">Markdown preview</div><article id="preview" class="preview markdown-body"></article></div></div><footer class="editor-footer"><div><span id="characters">0 characters</span> · <span id="words">0 words</span></div><span id="save-state">Changes are saved automatically</span></footer></section><aside id="history-panel" class="history-panel" aria-hidden="true"><div class="history-header"><div><h2>Change history</h2><p>Author, time, and version preview</p></div><button id="close-history" class="icon-button">×</button></div><div id="history-list" class="history-list"></div></aside></main>
 <dialog id="identity-dialog"><form id="identity-form" class="dialog-panel"><h2>What should we call you?</h2><p class="dialog-copy">Your name will be shown next to changes and remembered on this device.</p><input id="nickname" maxlength="40" autocomplete="nickname" required placeholder="Name or nickname"><button class="primary-button">Open note</button></form></dialog>
 <dialog id="password-dialog"><form id="password-form" class="dialog-panel"><h2>Protected workspace</h2><input id="open-password" type="password" autocomplete="current-password" required placeholder="Password"><p id="password-error" class="form-message error"></p><button class="primary-button">Open</button><a id="back-workspace" class="dialog-link" href="/">Back</a></form></dialog><div id="toast" class="toast"></div></body></html>
diff --git a/static/pad.html b/static/pad.html
index 6c1e0f3..9c93292 100644
--- a/static/pad.html
+++ b/static/pad.html
@@ -1,5 +1,5 @@
 <!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><meta name="color-scheme" content="dark"><title>__PAD_TITLE__ · RustPad</title><link rel="stylesheet" href="/assets/styles.css?v=__ASSET_VERSION__"><script type="importmap">{"imports":{"@rustpad/api":"/assets/js/api.js?v=__ASSET_VERSION__","@rustpad/clipboard":"/assets/js/clipboard.js?v=__ASSET_VERSION__","@rustpad/editor-format":"/assets/js/editor-format.js?v=__ASSET_VERSION__","@rustpad/markdown":"/assets/js/markdown.js?v=__ASSET_VERSION__","@rustpad/session":"/assets/js/session.js?v=__ASSET_VERSION__","@rustpad/socket":"/assets/js/socket.js?v=__ASSET_VERSION__","@rustpad/url-state":"/assets/js/url-state.js?v=__ASSET_VERSION__"}}</script><script type="module" src="/assets/js/pad.js?v=__ASSET_VERSION__"></script></head>
 <body class="pad-page"><header class="app-header"><div class="app-header__main"><a class="brand" href="/">RustPad</a><span class="header-divider"></span><div class="document-heading"><h1 id="pad-title">__PAD_TITLE__</h1><p id="pad-url" class="document-url"></p></div></div><div class="header-actions"><span id="current-user" class="user-chip"></span><div class="status"><span id="status-dot" class="status__dot"></span><span id="status-text">Connecting…</span></div><button id="copy-link" class="secondary-button">Copy link</button><button id="publish-page" class="secondary-button">Page</button><button id="history-button" class="secondary-button">History</button></div></header>
-<main class="editor-layout"><section class="editor-panel"><div class="editor-toolbar"><div class="toolbar-group"><button data-format="bold"><strong>B</strong></button><button data-format="italic"><em>I</em></button><button data-format="strike"><s>S</s></button><button data-format="heading">H2</button><button data-format="bullet">• List</button><button data-format="number">1. List</button><button data-format="quote">Quote</button><button data-format="link">Link</button></div><button id="upload-button" class="toolbar-action">Image/file</button><input id="file-input" type="file" hidden><label class="line-toggle"><input id="line-numbers-toggle" type="checkbox" checked> Lines</label><div class="toolbar-fill"></div><button id="mode-toggle" class="markdown-toggle active" aria-pressed="true">Markdown</button><div class="view-switch"><button data-view="edit">Edit</button><button data-view="split" class="active">Split</button><button data-view="preview">Preview</button></div></div><div id="editor-workspace" class="workspace view-split"><div class="editor-column"><div class="column-label">Editor</div><div class="editor-shell"><div id="line-gutter" class="line-gutter" aria-hidden="true"></div><div id="owner-labels" class="owner-labels" aria-hidden="true"></div><textarea id="editor" placeholder="Start writing…" spellcheck="false"></textarea></div></div><div class="preview-column"><div id="preview-label" class="column-label">Markdown preview</div><article id="preview" class="preview markdown-body"></article></div></div><footer class="editor-footer"><div><span id="characters">0 characters</span> · <span id="words">0 words</span></div><span id="save-state">Changes are saved automatically</span></footer></section><aside id="history-panel" class="history-panel" aria-hidden="true"><div class="history-header"><div><h2>Change history</h2><p>Author, time, and version preview</p></div><button id="close-history" class="icon-button">×</button></div><div id="history-list" class="history-list"></div></aside></main>
+<main class="editor-layout"><section class="editor-panel"><div class="editor-toolbar"><div class="toolbar-group"><button data-format="bold" title="Bold"><strong>B</strong></button><button data-format="italic" title="Italic"><em>I</em></button><button data-format="strike" title="Strikethrough"><s>S</s></button><button data-format="heading1">H1</button><button data-format="heading2">H2</button><button data-format="heading3">H3</button><button data-format="heading4">H4</button><button data-format="bullet">• List</button><button data-format="number">1. List</button><button data-format="quote">Quote</button><button data-format="link">Link</button></div><div class="editor-controls"><label>Font<select id="font-family"><option value="mono">Mono</option><option value="system">System</option><option value="serif">Serif</option><option value="arial">Arial</option><option value="georgia">Georgia</option></select></label><label>Size<select id="font-size"><option value="14">14</option><option value="16">16</option><option value="18" selected>18</option><option value="20">20</option><option value="22">22</option></select></label></div><button id="upload-button" class="toolbar-action">Image/file</button><input id="file-input" type="file" hidden><label class="line-toggle"><input id="line-numbers-toggle" type="checkbox" checked> Lines</label><label class="line-toggle"><input id="compact-toggle" type="checkbox"> Compact</label><div class="toolbar-fill"></div><button id="mode-toggle" class="markdown-toggle active" aria-pressed="true">Markdown</button><div class="view-switch"><button data-view="edit">Edit</button><button data-view="split" class="active">Split</button><button data-view="preview">Preview</button></div></div><div id="editor-workspace" class="workspace view-split"><div class="editor-column"><div class="column-label">Editor</div><div class="editor-shell"><div id="line-gutter" class="line-gutter" aria-hidden="true"></div><div id="owner-labels" class="owner-labels" aria-hidden="true"></div><textarea id="editor" placeholder="Start writing…" spellcheck="false"></textarea></div></div><div class="preview-column"><div id="preview-label" class="column-label">Markdown preview</div><article id="preview" class="preview markdown-body"></article></div></div><footer class="editor-footer"><div><span id="characters">0 characters</span> · <span id="words">0 words</span></div><span id="save-state">Changes are saved automatically</span></footer></section><aside id="history-panel" class="history-panel" aria-hidden="true"><div class="history-header"><div><h2>Change history</h2><p>Author, time, and version preview</p></div><button id="close-history" class="icon-button">×</button></div><div id="history-list" class="history-list"></div></aside></main>
 <dialog id="identity-dialog"><form id="identity-form" class="dialog-panel"><h2>What should we call you?</h2><p class="dialog-copy">Your name will be shown next to changes and remembered on this device.</p><input id="nickname" maxlength="40" autocomplete="nickname" required placeholder="Name or nickname"><button class="primary-button">Open note</button></form></dialog>
 <dialog id="password-dialog"><form id="password-form" class="dialog-panel"><h2>Protected note</h2><input id="open-password" type="password" autocomplete="current-password" required placeholder="Password"><p id="password-error" class="form-message error"></p><button class="primary-button">Open</button><a class="dialog-link" href="/">Back</a></form></dialog><div id="toast" class="toast"></div></body></html>
diff --git a/static/styles.css b/static/styles.css
index acb2968..8463f97 100644
--- a/static/styles.css
+++ b/static/styles.css
@@ -272,3 +272,22 @@ dialog::backdrop { background: rgba(4,6,9,.82); }
 
 /* The rust gradient belongs only to the wordmark. */
 .home-header { background: transparent; }
+
+/* Editor display preferences and author overlay */
+.editor-shell { position: relative; }
+.owner-labels { z-index: 4; top: 0; bottom: 0; height: auto; }
+.owner-line { position: absolute; right: 0; left: 0; height: var(--editor-line-height, 31px); border-left: 3px solid var(--owner); background: linear-gradient(90deg, color-mix(in srgb, var(--owner) 8%, transparent), transparent 24%); }
+.owner-label { z-index: 1; transform: translateY(2px); }
+.editor-controls { display: inline-flex; align-items: center; gap: 7px; }
+.editor-controls label { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); font-size: .72rem; }
+.editor-controls select { width: auto; min-height: 30px; padding: 3px 24px 3px 7px; border-radius: 6px; font-size: .74rem; }
+.editor-workspace-font-system textarea, .editor-workspace-font-system .preview { font-family: Inter, ui-sans-serif, system-ui, sans-serif; }
+.editor-workspace-font-serif textarea, .editor-workspace-font-serif .preview { font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif; }
+.editor-workspace-font-arial textarea, .editor-workspace-font-arial .preview { font-family: Arial, Helvetica, sans-serif; }
+.editor-workspace-font-georgia textarea, .editor-workspace-font-georgia .preview { font-family: Georgia, "Times New Roman", serif; }
+.editor-workspace-font-mono textarea, .editor-workspace-font-mono .preview { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
+.compact-editor .editor-toolbar { min-height: 42px; padding-top: 5px; padding-bottom: 5px; }
+.compact-editor .column-label { min-height: 30px; font-size: .68rem; }
+.compact-editor textarea, .compact-editor .preview { padding-top: 14px; padding-bottom: 14px; font-size: calc(var(--editor-font-size, 18px) - 2px); line-height: 1.45; }
+.workspace textarea, .workspace .preview { font-size: var(--editor-font-size, 18px); }
+@media (max-width: 900px) { .editor-controls { order: 3; width: 100%; } .editor-toolbar { flex-wrap: wrap; } }