Study Tools Ninja

PDF Tools

Merge PDF

Combine multiple PDFs into one file in your browser — reorder files, then download.

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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
  • Password-protected PDFs may fail. Very large files are limited by browser memory.

How to use

  1. Drop two or more PDFs into the workspace (or click to choose files).
  2. Drag the thumbnail cards to set the merge order.
  3. Click Merge & download — files stay on your device.

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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 Merge PDF

Is Merge 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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