Mark up any document.
Right in your browser.
Highlight, comment, draw, and sign PDFs — a full annotation suite that runs without uploads, without installs, and without friction.
Master Services Agreement
The annotation workspace
Every tool you need on top of your PDF — with keyboard shortcuts, layers, and collaborator comments. Zero uploads.
Pages
Master Services Agreement
Annotations · 5
Highlight · Yellow
"Acme Labs, Inc." · Page 1
Highlight · Green
Compliance clause · Page 1
Sticky note
"Check termination clause in §7"
Comment · Marta
"Redline this paragraph before signoff."
Signature · J. Chen
Signed · Page 1
Every markup you need
A complete toolkit — and every annotation is saved inside the final PDF, not as a separate file.
Highlight
Yellow, green, blue, pink — highlight text with smart line detection.
Sticky note
Pin a quick reminder or reviewer note anywhere on the page.
Comment
Threaded comments with avatars — review with your team in context.
Draw
Freehand drawing with pressure-smoothed strokes — circle, cross out, connect ideas.
Shapes
Rectangles, circles, arrows, and lines — ideal for diagrams and flowcharts.
Signature
Draw or type your signature — embeds directly into the PDF.
Three steps from open to export
No accounts, no configuration. Drop a PDF, mark it up, export — all in your browser.
Open your PDF
Drop any PDF. Contracts, research papers, meeting notes, reports. Files stay local.
Mark it up
Highlight, comment, draw, stamp, sign — every tool you need, with real-time preview.
Export the annotated PDF
Annotations embed into the final PDF — shareable with anyone, works in every reader.
One workspace — every review
From legal redlines to classroom grading — the same toolkit adapts to every document task.
Research & papers
Highlight citations, drop notes, and export marked-up PDFs for your reading list.
- Color-coded highlights
- Cross-page sticky notes
- Exported with markup
Legal review
Redline contracts, flag clauses, and leave reviewer comments for counsel.
- Section-level comments
- Shape-based redlines
- Signature for sign-off
Teaching & grading
Mark up student papers with feedback — return annotated PDFs in minutes.
- Draw corrections by hand
- Stamp grades or scores
- Export per-student PDFs
Team feedback
Threaded comments with avatars let your team review a PDF in context.
- Per-reviewer comment threads
- Annotation sidebar
- Share as annotated PDF
Exam & study prep
Highlight key points, draw diagrams, and scribble reminders on practice sets.
- Multi-color highlights
- Freehand diagrams
- Sticky reminders
Meeting notes
Annotate decks and briefs live during meetings — share annotated notes immediately.
- Fast highlight + comment
- Signature for approvals
- One-click export
Your PDF never leaves your browser
Annotation, drawing, signing, and export all happen locally. We don't have a file-storage bucket — because we never receive your file.
- ✓Rendering & markup run client-side with pdf.js
- ✓Annotations embed into the final PDF locally
- ✓No account or signup required
- ✓Works offline once the page has loaded
Open a document. Start marking up.
No signup. No upload. No install. Full annotation toolkit — right in your browser.