PDF Editor

Edit PDF files directly in your browser — add text, annotations, watermarks, and more. Client-side processing, no file uploads.

Features

Common Use Cases

Adding annotations, text overlays, or watermarks to a PDF is a common need for reviewing contracts, marking up reports, branding documents before sharing, or adding page numbers to a compiled document. This browser-based editor handles these tasks without requiring Adobe Acrobat or any other desktop application.

How to Use

  1. Upload your PDF using the file picker.
  2. Use the text tool to add text overlays at any position on any page.
  3. Use the annotation tools to highlight, underline, or add comments.
  4. Add a watermark via the watermark panel — set the text, opacity, and position.
  5. Click Apply Edits and then Download to save your annotated PDF.

Privacy & Security

All processing for PDF Editor runs entirely in your browser. Your data — whether text, files, or other content — is never transmitted to any server. DevToolHub has no backend that receives or stores your inputs. This means the tool works even offline once the page has loaded, and there is no risk of your data being intercepted or stored by a third party.

Frequently Asked Questions

Can I edit a scanned PDF?

Scanned PDFs are images, not text. You can add annotations and overlays on top of them, but editing the underlying scanned text requires OCR first.

Are my uploaded files secure?

Yes. All processing happens client-side in your browser — your file is never transmitted to any server. Your document stays on your device throughout the entire editing process.

Will editing change the original PDF file?

No. The editor works on an in-browser copy of your PDF and only creates a new file when you click Apply Edits and download the result. Your original document remains untouched.

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