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Merge PDF

Merge PDF combines several PDF documents into one file entirely inside the browser.

Your files stay on this device. Thumbnails are rendered locally in your browser, and the final merge is processed in a dedicated browser worker.

Limits: 10 PDFs, 25 MB each, 50 MB total input, 200 pages, and 75 MB output. Encrypted PDFs are rejected.

Last technical check: August 11, 2026

How to use it

  1. Select two to ten PDF files from your device.
  2. Review page counts and reorder or remove files as needed.
  3. Start the merge and wait for the dedicated browser worker to finish.
  4. Download the merged PDF, then reset the tool to release the session data.

After selecting up to ten files, you can review their page counts, remove items, and place them in the exact order required before starting the operation. A dedicated browser worker copies each original page without changing its dimensions, then prepares one downloadable document. Files are not uploaded to Tooliba, retained after the session, or included in analytics. To protect browser memory, each PDF may be at most 25 MB, combined input is limited to 50 MB and 200 pages, and output is limited to 75 MB. Password-protected or encrypted documents are rejected rather than decrypted.

FAQ

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