Edit your PDF documents directly in your browser. Add text, highlights, redactions, shapes, and images. All editing happens securely on your device.
Click to select a file or drag and drop
PDF file
Your files never leave your device.
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Upload the PDF you want to edit. It loads instantly right in your browser.
Use the toolbar to add text, highlight important sections, redact sensitive information, or draw shapes.
Click the Download button to save the modified document back to your device.
Change the author, title, and other properties.
Stamp text or an image over your PDF pages.
Add image stamps to your PDF using the annotation toolbar.
Add text to the top and bottom of pages.
Combine multiple PDFs into one file. Preserves Bookmarks.
Yes! You can annotate, redact, and edit your PDFs as much as you need without any signup or hidden costs.
Absolutely. The ZentoPDF Editor runs entirely in your web browser using WebAssembly. Your files are processed locally and never uploaded to any servers.
Currently, you can annotate, highlight, redact, add new text, and add shapes/images. Modifying the underlying source text directly is not supported in this version.
No. ZentoPDF does not add any watermarks to your documents.