ToolFu

PDF Editor

Add text, highlight, draw, and annotate PDFs directly in your browser. Your file never leaves your device.

Upload a PDF to edit

Click on existing text to edit it. Add new text, highlight areas, or draw. Your file never leaves your device.

Your PDF is processed 100% locally. It is never uploaded to any server.

How to use

  1. Upload a PDF file
  2. Select a tool: Text, Highlight, or Draw
  3. Click or draw on the PDF to add annotations
  4. Use the color picker to change annotation colors
  5. Navigate pages with the arrow buttons
  6. Click "Save PDF" to download the edited version

FAQ

Is my PDF uploaded to a server?

No. Your PDF is processed entirely in your browser using JavaScript libraries (pdf.js and pdf-lib). The file never leaves your device, making this one of the most private PDF editors available.

Can I edit the existing text in the PDF?

Currently, you can add new text on top of the PDF, highlight areas, and draw. Editing existing text in a PDF is technically very complex and may be added in a future update.

Is there a file size limit?

Since everything runs in your browser, the limit depends on your device's memory. Most devices can handle PDFs up to 50-100MB.