PDF Annotator
or drop files here · Max 60MB per file
Review and mark up your PDFs right in your browser: highlight important passages, draw freehand, add text comments and shapes to flag points in the document, with no software to install.
- Free, no registration required
- Works directly in your browser — nothing to install
- Files automatically deleted after 1 hour
- Secure connection (HTTPS) from start to finish
Annotate PDF: highlight, draw and comment right on the file
Reviewing a document means marking what matters: highlighting a passage, circling a number, writing a note in the margin. The PDF annotator brings these actions together in one place, running in the browser with nothing to install.
You can highlight text, draw freehand and add comments and shapes on any page, then download the PDF with the markup built in.
Specifications
- Accepted files
- Result
- Annotated PDF
- Multiple files
- One file at a time
- Maximum size
- 60 MB per file on the free plan; 100 MB on Premium
- Processing
- On ConverteJá servers, over an encrypted connection (HTTPS)
- Privacy
- Uploaded and generated files are deleted automatically after 1 hour
- Free plan
- 10 conversions per day, no sign-up and no watermark
- Compatibility
- Windows, macOS, Linux, Android and iOS, in any modern browser
How to use it, step by step
Upload the PDF
Upload the PDF you want to review.
Choose the markup
Choose the markup tool: highlight, freehand drawing, comment or shape.
Mark up the pages
Apply the markup on the pages, adjusting color and position.
Save and download
Save and download the annotated PDF.
When to use this tool
- Reviewing contracts, articles and reports by pointing out what needs fixing.
- Studying by highlighting key passages in PDF handouts and books.
- Flagging changes on floor plans, layouts and presentations.
- Returning a commented document to colleagues, clients or teachers.
Tips for a good result
- Use different colors for different kinds of comments, for example yellow for questions and green for approved points.
- If you plan to send the file to others without letting them change the markup, use Flatten PDF after annotating.
- To just read the document without changing it, the PDF Reader opens the file locally.
Frequently asked questions
Are the annotations saved in the PDF?
Yes. When you download, the new file already includes the markup you made.
Can I delete an annotation later?
Before downloading, yes, you can adjust or remove the markup. After downloading, start from the original file to redo it.
What is the difference between annotating and editing?
Annotating means marking and commenting on existing content. Editing means adding new elements, such as text and images, to the document.
What are the limits of the free plan?
The free plan allows 10 conversions per day, with files up to 60 MB and no sign-up required. The Premium plan removes the daily limit and the ads.