PDF Merge

Combine multiple PDF files into a single document, right in your browser.

Add two or more PDFs. You can pick more files to append them to the list.

    No files added yet.

    ToolsSoup's PDF Merge is a free online tool that combines several PDF files into one document, entirely in your browser. Add your PDFs, drag them into the right order, and download a single merged file in one click — no uploads, no sign-up, and nothing ever leaves your device.

    What is a PDF merger?

    A PDF merger joins two or more PDF files into a single, continuous document while keeping every page, in its original quality and order. People use it to bundle invoices and receipts, combine scanned pages, assemble a report from separate chapters, or staple a cover letter to a résumé. Because ToolsSoup merges PDFs locally with the open-source pdf-lib engine, your documents are never sent to a server.

    How to merge PDF files online

    Combining PDFs with ToolsSoup takes just a few seconds:

    1. Click Select PDF files and choose the PDFs you want to combine (or add them in batches).
    2. Reorder the list with the up and down arrows, or remove any file you do not need.
    3. Click Merge PDFs, then download your single combined document.

    Why use this PDF merger?

    • 100% free with no ads, sign-up, watermarks, or page limits.
    • Runs entirely in your browser — your PDFs are never uploaded to a server.
    • Reorder files before merging so the pages come out exactly how you want.
    • Keeps the original page size and quality of every document.
    • Works offline once the page has loaded.

    Frequently asked questions

    Is this PDF merge tool free?

    Yes. Every tool on ToolsSoup is completely free, with no account, sign-up, watermarks, or hidden limits.

    Are my PDF files uploaded anywhere?

    No. The entire merge happens locally in your browser using JavaScript, so your documents are never sent to or stored on any server.

    Can I change the order of the PDFs before merging?

    Yes. Each file in the list has up and down arrows so you can arrange the documents in any order. The merged PDF follows the order shown in the list from top to bottom.

    How many PDF files can I merge at once?

    There is no fixed limit — you can add as many PDFs as you like. Because everything runs on your own device, the practical limit is your browser's available memory, so very large batches depend on your computer.

    Why won't my PDF merge?

    The most common cause is a password-protected or corrupted file. Make sure each PDF opens normally and is not encrypted, then add it again. Files that are not valid PDFs cannot be combined.