ℹ️ Your PDFs are merged entirely in your browser — never uploaded to any server. Maximum 50MB per file.
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Select 2 or more PDF files to merge
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Combine multiple PDF files into a single document in seconds. Select files, arrange order, merge and download — all free.
Select 2 or more PDF files to merge
Choose PDFsPDF files only · Max 50MB each
This tool combines two or more PDF files into a single document, in the order you choose. It's built for situations where you have related content spread across separate files — scanned pages, signed forms, reports, statements or chapters — and need them as one continuous PDF. The merge preserves the original formatting, images and text of every page exactly as they appear in the source files; nothing is re-rendered or re-compressed unless you choose to compress the result afterwards.
All merging happens directly in your browser using JavaScript. Your files are never uploaded to a server, which means there's no waiting for uploads and no privacy concern with sensitive documents like contracts, ID scans or financial statements.
The order you arrange the files in determines the order of pages in the output — file 1 contributes its pages first, then file 2, and so on. If a file itself has multiple pages, they stay in their original sequence within that file. Double-check the arrangement before merging, especially if you're combining many documents.
A merged PDF is roughly the combined size of its source files — merging doesn't compress anything. If the result is too large for an email attachment or upload portal, run it through our PDF Compressor afterwards to reduce the file size while keeping all pages intact.
If some pages end up sideways because the source files had different orientations, use Rotate PDF to fix specific pages. If you need to remove a blank or unwanted page from the merged result, the Remove PDF Pages tool can do that without re-merging from scratch.
When merging many files, the order they appear in your file browser often isn't the order you want them merged in — especially if filenames are inconsistent (some named by date, others by description, others just "scan001", "scan002"). Before uploading, it can help to rename files with a numbered prefix matching your intended order (01-cover.pdf, 02-report.pdf, 03-appendix.pdf), making it immediately obvious what order to arrange them in once uploaded, and reducing the chance of an ordering mistake — particularly important when merging many files where checking each one individually before finalising would be tedious.
For documents assembled from several pieces created independently — a cover page designed separately, a body report exported from another program, an appendix scanned from paper — merging is typically the final assembly step, after each individual piece has already been finalised. This means it's worth double-checking each source file individually (correct content, correct orientation, reasonable file size) before merging, since catching an issue in one source file after merging means either re-doing the merge from scratch with a corrected file, or using additional tools to fix just the affected pages within the merged result. Catching issues before merging is generally the more efficient approach when working with several source files.
There's no fixed limit on the number of files — you can merge as many as your device can comfortably handle. Since processing happens in your browser, very large numbers of files or very large individual files will depend on your device's available memory.
No. Merging combines the original pages exactly as they are — text stays sharp, images keep their original resolution, and formatting is preserved. The merge process doesn't re-encode or compress any content.
Password-protected files generally need to be unlocked first. Use our Unlock PDF tool to remove the password (if you know it), then merge the unlocked files. You can re-add password protection to the merged result afterwards with Protect PDF.
This tool arranges merging at the file level. For fine-grained control over individual page order within the combined document, merge your files first and then use the Reorder PDF Pages tool on the result.
No files are uploaded. The merge happens entirely within your browser using JavaScript, so your documents never leave your device.