Mark It Down

✂ Web Clipper — Clip the web, capture AI

• Web Clipper Right-click any page or selected text to save or copy it as clean Markdown. Saved notes open automatically in Side Panel
• AI Chat Extraction Captures output from Claude, ChatGPT, Grok, and Gemini as clean Markdown. Math, code, tables, and artifacts all preserved
• Comment Thread Extraction Structured Markdown from Hacker News, Reddit, and GitHub. Preserves nesting, authors, timestamps, and conversation context
• llms.txt Detection Auto-checks /llms-full.txt and /llms.txt before Readability fallback. 24h cache, 5s timeout
• Mermaid Preservation Mermaid.js diagram source code recovered and saved as ```mermaid code blocks
• YouTube Transcripts Clips available YouTube captions as timestamped Markdown links — useful for returning to exact moments in a video
• Shadow DOM / iframe Support Extracts content from Shadow DOM internals and same-site iframes, reducing failures on modern SPAs
• Social and Publishing Sites Dedicated extractors for LinkedIn, Bluesky, Threads, Medium, and Discourse reduce cleanup after clipping
• Zenn / Qiita / Hatena Blog Japanese blogging platform embed syntax recognized and converted to standard Markdown. Hatena Blog footnotes become Markdown footnotes when clipped from RSS
• Save Selection — Unified Quote Format Saving selected text via right-click or RSS Quote Selection always produces the same structure: frontmatter (source URL + timestamp) + blockquote + attribution link + disclaimer footer

rss RSS Reader — Read, save, and sync feeds

• Feed Viewer Open RSS from the sidebar, command palette, or Ctrl+Shift+R. Move with j/k, open with Enter or o, save with i
• Reading Pane Preview article HTML, track read and saved state, and view the saved Markdown immediately after clipping
• OPML Import / Export Bring subscription lists from Feedly, Inoreader, NetNewsWire, and other OPML 2.0 readers
• Git Sync for RSS Settings Sync feeds and denylist settings across devices while keeping per-device permissions separate
• Feed Health Indicators See last fetch time, failed fetches, permission needs, and saved state before deciding what to read next
• Web Subscription (RSS-free Sites) Subscribe to Qiita, Zenn, or any site without a public feed. Article URLs and titles are fetched automatically; body text saves only when you explicitly clip — no bulk ingestion
• Auto-Tagging on Clip After clipping an RSS article, tags are auto-generated from its title, URL, and feed name. Can be turned off in settings
• Allow-Keywords Filter Set per-feed keyword filters (Google Alerts–style) to let through only articles whose title, URL, or RSS description matches your terms. Chip editor in the Feeds row, Any / All toggle
• Permission Badge When feeds need host permissions, the extension icon badge shows the pending count and the fetch button shows a toast notification
• Background Polling Enable scheduled refresh in RSS settings and feeds update automatically at your configured interval — no need to keep the tab open. Uses Chrome's alarms API; the schedule survives browser restarts
• Desktop Notifications Opt in from RSS settings to receive a desktop notification listing new article titles when a scheduled fetch finds fresh items. Content is generated locally — nothing sent externally
• Cross-Device Read Sync Articles marked as read on one device appear as read on every device in the same Chrome profile. Only read identifiers sync; article content stays local
• Quote Toolbar Select text in the article reading pane to reveal a floating toolbar. One click quotes the selection to Inbox with source URL and timestamp
• Storage Footprint Display The RSS modal header shows how much local storage your feeds occupy, with a hover tooltip breakdown. Helps calibrate retention settings
• Dead Feed Cleanup When a feed fails repeatedly, a prompt surfaces to remove it or update the URL — keeping your subscription list healthy without manual audits
• Conditional GET (ETag / Last-Modified) Feed requests include If-None-Match and If-Modified-Since headers. Unchanged feeds return 304 and skip parsing — less bandwidth, faster cycles
• Retention Split Set separate retention periods for read and unread articles. Keep unread items longer, prune read ones sooner

🔀 Portability — Solve Markdown "dialects"

• Portability Hub Convert notes to the syntax of any target platform. Supported: CommonMark, Obsidian, Hugo/Jekyll, Docusaurus, MkDocs, GFM, Zenn, Qiita (8 targets)
• Copy as CommonMark / GFM / Hugo / Obsidian Choose a target dialect from the export menu before copying. Notes arrive closer to the format your publishing tool expects
• Batch Conversion On ZIP export, non-standard syntax triggers a 3-choice dialog: output as-is / normalize all / confirm one-by-one
• Table Width Preservation Table column widths are stored in Markdown attr-list data and reflected in HTML, PDF, and DOCX export
• Pin / Star Frontmatter Pinned and starred state can round-trip through export/import instead of being lost at the boundary
• Chat Format Smart Paste Paste from Slack, Discord, or WhatsApp — app-specific syntax auto-converts to standard Markdown. Covers links, spoilers, and quote blocks
• Obsidian Wikilinks + Autocomplete Write [[Note Title]] or [[Title|Alias]]. Type [[ for a fuzzy-search autocomplete popover. Resolved links are green, unresolved red, ambiguous amber. Ctrl+Click to navigate
• Obsidian Properties + Logseq Export Presets Built-in presets for Obsidian Properties format and Logseq :: notation, alongside the existing CommonMark / GFM / Hugo / Obsidian copy targets
• Custom Export Preset Manager Create, edit, duplicate, and delete custom export presets from a dedicated UI — accessible from the right panel and the Markdown export menu

◐ Modes — New Tab & Side Panel

• New Tab Full screen workspace with Focus Mode (Alt+F)
• Side Panel Write alongside AI or while browsing
• Focus Mode Typewriter scroll, cursor-aware highlighting
• Command Palette Fuzzy search with snippet boost, alert color indicators, syntax previews
• Sticky Toolbar Always visible in Side Panel
• Dual Mode Open both simultaneously, independent windows
• Cross-Instance Compare Edit the same note in New Tab and Side Panel — conflicts detected automatically when either closes, resolved with a visual diff modal
• Diff Navigation ▲2/5▼ nav controls in Compare & Edit banner. F5/Shift+F5 keyboard navigation. WYSIWYG reference view
• New Tab / Side Panel Interface Parity Header actions, panel pin vs. overlay behavior, and search preview availability are determined by screen role — removing subtle inconsistencies between the two views

# Markdown — GFM + Mermaid + LaTeX

• GitHub Flavored Tables, task lists, syntax highlighting
• Mermaid All 19 diagram types — flowcharts, ER, mind maps, Gantt, and more. Click to zoom, PNG export
• Math (LaTeX) Inline $...$, block $$...$$. Open in new tab, save as Retina 2x PNG
• Callouts NOTE, TIP, IMPORTANT, WARNING, CAUTION
• Auto-Linking URLs and emails become clickable
• Page Links Internal navigation with [Text](#heading)
• Footnotes Academic-style [^label] — insert via modal with auto-numbering, or type directly. Edit and delete from hover toolbar
• Emoji Shortcodes Type :smile: to insert 😄
• Tables Insert, sort columns, copy as CSV or Markdown, layout toggle (Auto / Full Width / Equal Columns), drag to reorder rows. Paste from Excel/Google Sheets
• Custom Snippets Save and insert your own Markdown templates. 3 built-in presets (YAML, Details, Definition List)
• Insert TOC /toc generates table of contents from headings at cursor position
• Smart Paste Ctrl+Shift+V converts HTML→Markdown, JSON→tables/lists, auto-cleans LLM output HTML tags
• Slash Menu /now, /toc, /h1–h6, /list, /task, /quote, /code, /table, /hr, /image, /mermaid, /math, /alert, /footnote. Works under 150KB
• Code Language Detection 16 languages auto-detected from shebang, DOCTYPE, and keywords
• Timestamp Headings /now for H2/H3 timestamp, Ctrl+Alt+; for inline HH:MM
• Collapsible Blocks <details>/<summary> click-to-expand. Insert via slash menu /details
• Heading Auto-Numbering Auto-number H2–H6 with CSS counters. Toggle from the slash menu — great for academic documents
• LaTeX Autocomplete Type \ inside a math block for 108 LaTeX command suggestions (Greek letters, operators, arrows, etc.)
• All-Notes Find & Replace Search and replace across every note (Ctrl+Shift+H). Match position shown (3/17), folder filter chips, before/after preview

📁 Notes — 5 folders, fixed structure

• 5 Folders Inbox / Template / Archive / Trash / System
• Pinned Area Pinned notes grouped in a dedicated "★ Pinned" area at the top. Hidden when empty (Alt+P)
• Frontmatter Manage Hugo/Jekyll/Obsidian metadata separately from note body. Edit in the Detail Panel Frontmatter tab; auto-merged on export
• Detail Panel Preview, Frontmatter, and Info tabs inside the sidebar — inspect and edit without opening a note. Drag to resize
• Hover Cards and Preview Panel Check note content and metadata from the sidebar before opening the note
• NoteItem Simplification Each note row shows only checkbox and title. Actions consolidated in the Detail Panel
• Remote Sidebar Local/Remote toggle in Notes tab when Git is connected. Browse remote notes with folder grouping and Pull
• Drag & Drop Move notes between folders
• Search Fuzzy, typo-tolerant with CJK single-character support
• Batch Selection Shift+Click range select, Ctrl+Click toggle. Drag-and-drop, Delete, and Stage multiple notes at once
• Sort Name↑, Name↓, Updated↑, Updated↓ — 4-state cycle
• Duplicate Detection Side-by-side comparison to choose
• Template Gallery Browse 20+ templates from the gallery page. Link appears on Template folder hover
• Split Note Break a long note at any heading into two parts
• Merge Notes Ctrl+Click to select, drag to reorder, combine into one
• Right Panel Note Details Hover a note name in the list to see its creation date, modification date, file size, and Git status in the right panel — without opening the note
• Frontmatter Edit from Right Panel Right-click a note name to open frontmatter editing in the right panel. Drag fields to reorder, add and remove tags, apply export presets. Archive notes show read-only

👁 View — TOC & themes

• TOC Auto-generated, highlights current section. Collapsible child headings, 6 navigation buttons (top, prev/next heading, PgUp/PgDn, bottom)
• Backlink Panel Inbound [[links]] pointing to the current note appear at the bottom of the TOC and in the Right Panel. Click or Enter to jump to the source note. Hidden when there are no backlinks
• TOC Reordering Drag & drop or keyboard shortcuts to restructure headings
• Breadcrumbs Current heading path with click-to-jump ancestors
• Word Count Characters, words (CJK-aware), reading time
• 4 Themes Light / Dark / Parchment / CandleLight — the editor is a room, not just a tool
• Typography Presets Standard / Compact / Academic / Writer — Writer is 18px, 1.8 line height, 720px centered layout for long-form writing
• system-ui Font Body font switched to the OS default stack. CJK rendering improved (Mac: San Francisco, Windows: Segoe UI)
• Background Texture Bring your own texture to make the space feel personal
• Auto Pair Brackets, quotes auto-complete
• Code Blocks Scrollable (20+ lines), reliable copy with ProseMirror-first extraction, Copy Code / Copy as Markdown. Hover delete
• Inline Code Double-click to copy, backtick toggle input
• Blockquote Hover Delete Remove blockquotes with hover trash icon, same pattern as alerts/tables/footnotes

💾 Storage — Auto-save, 300KB+ support

• Auto-save 0.5s debounce, no save button needed
• Progressive Loading 20KB+ opens instantly — start writing while the rest loads silently
• Smart Loading 300KB+ shows choice dialog, Archive for fast read-only view
• Chrome Storage Survives cache clear
• Import/Export .md, .zip, Archive Pinned
• Export PDF (page numbers, TOC, custom margins), DOCX (images, diagrams, math embedded), PNG (2x Retina), HTML (3 templates, self-contained), EPUB (Mermaid, math, code highlighting), LaTeX (.tex, heading→\section mapping) — Ctrl+Shift+E
• Portable Copy Targets Copy as CommonMark, GFM, Hugo, or Obsidian when you need Markdown shaped for a specific destination
• Rich Text Copy Copy entire note or selection as rich text (Ctrl+Shift+C). Paste into Word, Notion, or Google Docs with formatting intact
• Frontmatter Auto-Merge When Frontmatter is set, it is automatically prepended on export to MD, HTML, EPUB, LaTeX, and DOCX
• Copy for LLM YAML frontmatter (title/source/date) prepended. From Copy dropdown or command palette
• Token Count Estimated token count shown in toast on copy/export
• Batch Export Select multiple notes → ZIP archive (Markdown/HTML/DOCX). Non-standard syntax triggers a 3-choice Portability dialog

Git Sync — GitHub / GitLab

• Connect Personal Access Token, encrypted storage
• Manual Commits Meaningful snapshots, not auto-sync
• Conflict Resolution Side-by-side risk indicators, or "Merge in Editor" for manual WYSIWYG conflict resolution
• Selective Push Stage specific notes and push only those. Per-note tracking with lastPushedAt timestamps
• Git Fetch Check remote without changing local
• History View past 20 commits, diff view
• Version Restore Restore notes to previous versions with one click

⌨ Keyboard Shortcuts — Power user essentials

Navigation

• Line Number Jump Command Palette → "Go to line" — jump the cursor to any line number. Useful in long technical notes
• Ctrl+K Search
• Ctrl+Shift+P Command Palette
• Ctrl+Shift+1 Notes panel
• Ctrl+Shift+2 TOC panel
• Ctrl+Shift+F Sidebar search focus
• Ctrl+Shift+G TOC search focus
• Ctrl+Shift+E Export menu
• I/A/T/M Triage selected notes to Inbox, Archive, Trash, or Template

Editing

• Alt+N New note
• Alt+↑/↓ Move line
• Ctrl+; Insert date
• Ctrl+F Search (no replace)
• Ctrl+H Find & Replace (current note)
• Ctrl+Shift+H All-notes Find & Replace

View

• Alt+F Focus Mode
• F11 Fullscreen
• Ctrl+↑/↓ Jump headings (read-only)
• PgUp/PgDn Page scroll

TOC & Structure

• TOC Reading Progress + Number Key Jump TOC shows scroll progress as a percentage. Press 1–9 while the TOC is open to jump directly to that numbered heading
• Ctrl+Shift+↑/↓ Reorder headings in TOC (same level)
• Tab / Shift+Tab Demote / promote heading level in TOC

Notes

• Alt+P Pin note
• Alt+T Move to Template
• Alt+A Move to Archive
• Ctrl+Shift+S Git sync
• Ctrl+Alt+PgUp/PgDn Previous/next note in folder