Annotate PDF

Add visible text labels, highlights, and boxes locally in your browser

How it works

1Upload the PDF you want to mark up.
2Add text labels, highlights, or outline boxes and place them on the page preview.
3Export the browser-local annotated PDF and download the updated copy.

Processing for this tool

Browser-localBest option for confidential files

This tool runs in your browser on this device. For the core operation, the file does not leave the browser.

When this mode can do the job well, it is the best option for sensitive or confidential documents.

Drop your PDF file here

or click to browse - up to 100 MB per file

Select file

Browser-local visible annotation

Add visible text labels, highlight blocks, and outline boxes directly in the browser. This first public version is intentionally honest: it draws markup into the page content and does not claim Acrobat-style comment threads, sticky notes, or editable PDF annotation objects.

Annotation builder

0 annotation(s) added

The export keeps visible annotation markup, but it writes the markup into the page content instead of preserving live PDF review-comment objects.