Structured source records
Save a page with its title, URL, note, tags, read status, importance, and linked dossiers. You can also migrate browser bookmarks into Pages and dossiers from Chrome-family HTML exports or Firefox Bookmark Backup JSON.
Local-first research for the open web
Annotate the web.
Keep the evidence.
Save sources, capture exact passages, compile claims with supporting and challenging evidence, and export a portable library—without a Redline account or cloud sync.
- Stored locally
- No account
- No analytics
- Local exports
Local by designYour research vault stays in browser-managed storage.
Context, not just URLsKeep notes, passages, tags, status, and dossiers together.
Portable outputsBack up, share, or continue in other research tools.
Built for desktopChrome-family browsers and Firefox.
More than a bookmark
A research trail you can inspect, connect, and carry forward.
Redline keeps the source beside the thought: what you read, the exact passage that mattered, and what you planned to do with it.
Passage-level annotations
Capture selected text as a highlight, claim, quote, source evidence, follow-up, to-do, question, or warning.
Dossiers and tags
Group material around a case or question while using tags to classify themes across your library.
Evidence Compiler
Create dossier claims, attach exact passages, review supporting and challenging evidence, and keep deterministic evidence gaps visible.
Local search
Search saved titles, URLs, notes, annotations, dossiers, tags, source domains, claims, and conclusions without a hosted index.
Restorable highlights
Revisit saved passages when the page still matches. The library keeps the record even when a changed page needs review.
Backups and citations
Create an importable All data JSON export, or produce Markdown, CSV, XML, BibTeX, RIS, CSL JSON, EndNote XML, and more.
A simple loop
From reading to reusable evidence.
Capture while the context is fresh, then refine the record when you return to your library.
Save
Turn the active page or a link into a structured local source record.
Annotate
Select the exact language that supports a claim, question, or next step.
Compile
Connect passages to a dossier claim, review challenges, and record a conclusion.
Export
Create a backup or carry the complete claim-to-source trail into a focused research pack.
Product tour
See Redline in action.
Follow the complete research workflow, from capturing source material to building an organized, portable evidence trail.
Inside Redline
Capture beside the page. Review from the library.
Explore representative Redline workflows using illustrative sample content.
Privacy model
Your vault stays with you.
Redline’s current release has no account system, hosted sync, analytics, advertising, or Redline server.
Read the privacy policy- Saved records are stored in browser-managed local extension storage.
- Citation metadata is read from the current page and processed locally.
- Exports are generated locally and handed to your browser’s download flow.
- You decide what to capture, delete, export, and share.
Documentation
Answers for the work you are doing now.
Use the quick start for your first source, or go straight to backups, troubleshooting, and common questions.
Getting started
Save a source, capture a passage, build a dossier, and make your first backup.
Open guide →Capture and annotations
Choose the right capture route and understand exactly what each action saves.
Capture evidence →Dossiers and tags
Build focused collections and a consistent vocabulary without losing record-level control.
Organize research →Library guide
Navigate every Library area, search across record types, and maintain the local vault.
Explore the Library →Evidence Compiler
Build claims from exact passages, review deterministic evidence gaps, and export the full trail.
Compile the evidence →Backups and exports
Protect your local vault and choose the right format for the next step.
Protect your data →Troubleshooting
Work through capture, highlight, sidebar, search, import, and download issues.
Find a fix →Need a hand?
Start with context. Get to a useful answer faster.
Search the docs first, then report a reproducible bug or suggest an improvement through the public support repository.
Ready to start?
Keep your next evidence trail in Redline.
Install Redline from your browser’s official extension store. Your sources, annotations, dossiers, claims, evidence relations, and exports stay local to your browser profile.