Merge PDF

Client

Add two or more PDF files, reorder if needed, then download one combined document—processing stays in your browser tab.

About Merge PDF

Combine multiple PDF files in order—one download; processing stays in your browser. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

Up to 20 files, 25 MB each. Drag order is append-only—reorder in the list.

Nearby workflows on Toolcore

  • PDF info — Inspect page count, metadata, and encryption status—processing stays in your browser. after you download or inspect a PDF on this page.
  • Split PDF — Extract a page range or download one PDF per page—processing stays in your browser. after you download or inspect a PDF on this page.
  • Images to PDF — Combine PNG or JPEG files into one PDF—one page per image; processing stays in your browser. after you download or inspect a PDF on this page.
  • Compress & minify — HTML, JS, CSS, XML, SQL, JSON minify; batch JPEG/WebP image compression. after you download or inspect a PDF on this page.

Common use cases

  • Join scanned pages from separate exports into one attachment.
  • Combine appendix PDFs after a report export from another app.
  • Stack fixed-order handouts before sharing a single file.

Common mistakes to avoid

  • Wrong file order

    Merge uses the list order shown on the page—use Up/Down before you merge.

  • Password-locked inputs

    Encrypted PDFs may fail to load. Unlock or re-export without a password first.

FAQ

Is my PDF sent to a server?

No. Files are read and merged entirely in your browser.

How many files can I merge?

Up to 20 PDFs per run, with a per-file size limit shown near the file picker.

Will bookmarks be preserved?

Merge copies pages only—bookmarks and form fields from sources are not merged in this version.

More tools

Related utilities you can open in another tab—mostly client-side.