PDF Annotation is a strong option, but it is not the right fit for everyone. Below are 1 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
Mark up a PDF without sending the document to a website. PDF Annotation is a private PDF annotation app for Chrome where you can write, draw, highlight, sign, arrange pages, and export the result. Use it to annotate PDF files while every document stays on your device. The extension needs no account or network access. ✅ What you can do ✓ Draw freehand notes with adjustable color and line width. ✓ Add text boxes in multiple fonts, sizes, and colors. ✓ Mark areas with rectangles, ellipses, lines, arrows, or a highlighter. ✓ Place PNG or JPEG images anywhere on a page. ✓ Draw a reusable signature that stays in your browser. ✓ Reorder, rotate, duplicate, or delete pages. ✓ Add a blank page or insert pages from another PDF. ✓ Undo and redo annotation changes on each page. ✓ Export the full document or only the selected page. 🔒 Keep document review on your device This PDF annotation software processes documents locally and works as an offline PDF tool. The extension has no host permissions and does not upload your contract, coursework, report, or signature to an online PDF annotator.
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| PDF Annotation (original) | 5.0 | 32 | Free | |
| Adobe Acrobat: PDF edit, convert, sign tools | 4.4 | 311M+ | Freemium |
Do more in Google Chrome with Adobe Acrobat PDF tools. View, fill, comment, sign, and try convert and compress tools.
Why it replaces PDF Annotation: A similar extension to PDF Annotation, worth checking out.
Direct comparisons with the extensions people weigh against it.
Adobe Acrobat: PDF edit, convert, sign tools is the closest match. A similar extension to PDF Annotation, worth checking out.
Most options in this category are freemium, with a usable free tier for evaluation.
Common reasons are pricing, missing sync or team features, and specific limitations: Requires extra browser permissions to work fully; Advanced settings can take time to learn.
