Study Tools Ninja

PDF Tools

Edit PDF

Add text, highlights, shapes, and images as overlays on PDF pages in your browser.

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Privacy: files and QR inputs are processed in your browser on this device. Study Tools Ninja does not upload them to a server.

Limitations & honesty notes
  • Adds overlays on top of pages. Does not rewrite or reflow existing PDF text like Acrobat.

How to use

  1. Drop a PDF, then pick a tool: text, highlight, whiteout, shape, or image.
  2. Click the page to place overlays; use Undo/Redo and the page rail to move around.
  3. Download when finished. Overlays sit on top of pages — existing text is not rewritten.

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This tool is optimized around the search terms students use when they need fast assignment help.

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About Edit PDF

Is Edit PDF free?

Yes. Every Study Tools Ninja tool is free for students.

Does it work on mobile?

Yes. The layout is built for phones and laptops used on campus.

Do you store my data?

Tool inputs run in your browser. Study Tools Ninja does not require an account to use these helpers.

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