PrivConvert

PDF tool

Annotate PDF

Add highlights, text, lines, shapes, or freehand marks to a PDF.

Add your input

Your file stays in this browser.

Settings

Good to know1 file · 100 MB max · 500 pages max
Upload a PDF fileResult: PDF file
  • Your PDF stays in this browser while the tool runs.
  • Encrypted or damaged PDFs may need to be unlocked or repaired before this tool can read them.
  • This tool preserves page artwork where possible, but it does not rewrite original PDF text like a word processor.
  • Use the preview to place text, shapes, lines, or freehand marks before running.

Next tools

Keep working with this file

Add textAdd new text to a PDF page. This does not edit existing paragraphs.Add imagePlace a PNG or JPG image on top of one PDF page.SignDraw a handwritten signature and place it on a PDF.Image watermarkOverlay a PNG or JPG watermark image on selected PDF pages.

How it works

How to use Annotate PDF online

  1. Choose the file or files requested by the tool.
  2. Adjust any available settings for the output you want.
  3. Run the tool in your browser and download the finished result.

Overview

Annotate PDF for private browser work

Add highlights, text, lines, shapes, or freehand marks to a PDF. This page keeps the input, output, browser requirements, and practical limits visible before you run the tool, so you can choose the right workflow for the file.

Input

Upload a PDF file

Output

PDF file

Limits

1 file · 100 MB max · 500 pages max

Best for

Annotate PDF use cases

  • Turn upload a pdf file into pdf file without creating an account.
  • Run a quick annotate pdf job before sharing, archiving, or publishing a file.
  • Check the 1 file · 100 mb max · 500 pages max guidance before using larger or unusual inputs.

Processing

What happens in your browser

PrivConvert uses PDF.js viewer, Canvas, and pdf-lib for this workflow. 14 adjustable settings. No special browser capability is required for typical inputs

Your PDF stays in this browser while the tool runs.

Related tools

Add Text to PDFAdd Image to PDFSign PDFAdd Image WatermarkAdd Page NumbersAdd Signature Image

FAQ

Annotate PDF questions

Read privacy policy

Is Annotate PDF free to use?

Yes. This tool is free to use in your browser and does not require an account.

Are my files private?

PrivConvert is designed for local-first processing. Files are handled in your browser when supported and are not uploaded for account-based storage.

Why might a file fail to process?

Your PDF stays in this browser while the tool runs.