How to use Edit PDF
- Select the PDF.
- Pick a tool: Text, Box, Highlight, White-out or Draw, and use ‹ › to move between pages.
- Drag items to adjust them, then click “Save & download”.
What you can do
Text works in any language, including Chinese, because it is drawn with your system fonts. White-out covers existing content with white so you can type a correction on top. Highlight adds a translucent marker; Box draws an outline; Draw lets you write or sketch with a finger or mouse.
White-out only hides content visually — the original text is still in the file. To permanently remove sensitive information, use Redact PDF. To sign, use Sign PDF.
🔒 Your files never leave your device
bopdf processes your documents locally with JavaScript (pdf-lib and Mozilla pdf.js) inside your browser tab. Your PDF is never uploaded, stored or seen by us — you can even disconnect from the internet after the page loads and the tool keeps working. When you close the tab, everything is gone.
Frequently asked questions
Can I change existing text?
Not directly; cover it with White-out and type the new text on top.
Does it work on iPad and phones?
Yes, you can drag and draw with touch.
Is a watermark added?
No.
Are my files uploaded to a server?
No. Everything happens in your browser on your own device. Files are never sent over the internet, which makes bopdf suitable for confidential documents.
Is there a file size limit?
There is no fixed limit, but very large files (hundreds of MB) depend on your device memory. On phones, files up to about 100 MB usually work well.