Merge PDF

Merge PDFs into one file

Open the first document, append the others, and every page lands in one continuous file you can reorder before exporting. Pages are copied across with their original content intact, so nothing is re-encoded on the way through.

How to merge pdfs into one file

  1. 1

    Open the first PDF

    Whichever document should lead is the one to open first — though you can reorder everything later, so it is not binding.

  2. 2

    Append the rest

    Add each further PDF from the editor. Its pages join the end of the current document and appear in the page rail on the left.

  3. 3

    Put them in order

    Drag thumbnails to reorder, or select a page and use Alt with the arrow keys. Rotate or delete anything that arrived the wrong way round.

  4. 4

    Export one file

    Download writes a single PDF containing every page in the order shown.

Pages are copied, not re-encoded

Merging lifts each page's existing content across to the new document rather than rasterising and recompressing it. Text stays selectable, vector art stays sharp, and image quality is whatever it was in the source.

Fix the order while you are there

Most merge tools give you a fixed file-level order and nothing more. Here the merged document is just a document: reorder, rotate, duplicate or drop individual pages before you export.

It runs on your machine

The documents are combined in the browser, which means the practical ceiling is your device's memory rather than an upload limit or a queue.

Questions

There is no fixed count. Files are appended one after another and held in memory, so very large batches are limited by your device rather than by a server-side cap.

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