Annotate & mark up a PDF — the full redline kit
DocsArc gives you a complete markup kit — highlights, sticky notes, callouts, revision clouds, polygons, a freehand pen and custom stamps — the same redline tools construction and engineering teams expect, running entirely in your browser.
Mark up drawings, contracts and reports without uploading them. Every annotation is added on your own device and exported into the file when you are ready.
Try it now — free
Runs on your device. Your file is never uploaded.
Why use DocsArc for this
Professional redline tools
Revision clouds, callouts, polygons, freehand pen, stamps and sticky notes — not just a highlighter.
Measure while you mark up
Calibrate a scale and add length, area and count markers alongside your annotations.
No upload
Drawings and contracts are marked up locally and never sent to a server.
How to annotate pdf with DocsArc
- 1Open your PDF in the DocsArc workspace.
- 2Pick a markup tool — highlight, cloud, callout, stamp, pen and more.
- 3Annotate the page; reposition or restyle any markup as you go.
- 4Export the marked-up PDF, flattened if you want it tamper-proof.
Frequently asked questions
What markup tools are included?
Highlights, sticky notes, callouts, revision clouds, polygons, a freehand pen and custom stamps — a full professional redline kit.
Are my documents uploaded to annotate them?
No. All markup happens in your browser on your device; nothing is uploaded.
Can I flatten the annotations so they can’t be moved?
Yes. You can flatten markups into the exported PDF so they become a permanent part of the page.