How to Annotate a PDF for Free Online — Highlight, Comment, Draw
Annotate PDFs for free online without Adobe Acrobat. Highlight text, add sticky notes, draw shapes, and underline — directly in your browser.
Annotate any PDF for free in your browser — highlight, comment, underline, draw. No Adobe Acrobat, no software install. FixMyPDF's Annotate PDF tool has all the tools you need for reviews, studying, and collaboration.
What Free PDF Annotation Covers
Highlighting text in multiple colours. Adding sticky-note style text comments. Underlining and strikethrough. Drawing freehand lines and shapes. Adding text boxes anywhere on the page. All for free, all in-browser.
How to Annotate for Free
Go to fixmypdf.in/tools/add-comments. Upload your PDF. Use the toolbar to select an annotation type (highlight, comment, underline, draw). Interact with the PDF to place annotations. Click "Download Annotated PDF".
Document Review Without Adobe
For contract reviews, upload the PDF, highlight clauses of concern in yellow, add red-text comments with revision suggestions, and share the annotated version back. Your reviewer gets a standard PDF that opens in any reader.
Comparing to Adobe Acrobat
Adobe Acrobat Reader (free) can annotate PDFs — but only if you sign in to a free account and the document's permissions allow it. FixMyPDF has no sign-in and no permissions restrictions. If you can open the file, you can annotate it.
Collaborative Annotation Without Accounts
Share the annotated PDF with a colleague. They can upload it to FixMyPDF, add their own annotations, and share back. No shared workspace, no account coordination required — just standard PDF files.
Annotating on Mobile for Free
The tool works in Safari and Chrome on iPhone and Android. Highlight by tapping and dragging over text. Add comments by tapping the page. Draw with your finger or stylus. Save to your device when done.
Removing Annotations
Made a mistake? Use Remove Annotations to strip all markup from any PDF and start fresh.
Try Annotate PDF Now — Free
Browser-based, private, and instant. No account or software required.
Open Annotate PDF