Mark — Web Highlighter

About

You read something important. You meant to save it. You didn't. Mark fixes that.

Select any text on any page — a color toolbar appears, you pick a color, and the highlight is saved permanently in Chrome. No signup screen. No loading spinner. No subscription that expires. Come back tomorrow or next year — your highlights are exactly where you left them.

── WHAT MAKES MARK DIFFERENT ──
✦ No account. No server. No tracking. Everything stored locally — only you can read it.
✦ Works on any website: articles, docs, academic papers, Substack, Medium, Wikipedia.
✦ Injects a searchable transcript panel on any YouTube video. Highlights store the exact timestamp — click a highlight in the panel to jump to that moment.
✦ 7-day activity strip shows your reading momentum at a glance.

── HIGHLIGHTS ──
• Four colors: yellow, green, blue, red — use them to signal meaning
• Add private notes to any highlight
• Keyboard shortcuts: Alt+1–4 to highlight, Escape to dismiss
• Right-click any image to clip it to your collection
• Search and filter all highlights across every saved page
• Hover any highlight to edit, recolor, or delete

── EXPORT ──
• Markdown — clean .md file with color labels, notes, and timestamps
• Obsidian — > [!quote] callout blocks, ready to paste into your vault
• Notion — push directly to any page via your integration token
• HTML Notebook — beautiful standalone offline file with TOC and key summary
• Per-page export — click ↓ next to any page to export just that page

── YOUTUBE TRANSCRIPTS ──
A Transcript button appears in YouTube's action bar on every video with captions. Click to open a searchable panel — switch languages, search within the transcript, highlight any line. The exact video timestamp is stored with the highlight so you can jump back to that moment from the panel.

── PRIVACY ──
Mark uses chrome.storage.local exclusively. No data ever leaves your browser. The only outbound requests are:
• Google's favicon API (for page icons in the panel)
• Notion API — only when you explicitly trigger a Notion export

Zero analytics. Zero telemetry. Zero accounts. Zero subscriptions.

Mark is free. Always.