Merge PDF

No. This tool runs entirely inside your browser using JavaScript. Your files are read from your device, processed in memory, and the result is handed straight back to you as a download. Nothing is transmitted, stored or logged, and the page keeps working if you go offline after it has loaded.

No. Pages are copied as-is into the new document, including fonts, vector graphics, images and links. Nothing is re-rendered or recompressed, so the output is identical in quality to the originals.

Up to 50 files per merge, each up to 200 MB. Since the merge runs on your device, very large batches depend on how much memory your browser has available.

Yes. Drag the file cards to reorder them before merging. The merged PDF follows the order shown in the list, top to bottom.

The file is encrypted and needs its open password before it can be edited. Run it through the Unlock PDF tool first, enter the password, and then use the unlocked copy here.

Yes, it is free with no signup, no watermark and no daily quota. Because the work happens on your own device, there is no server cost that would force limits. The only practical limit is your device's memory, which matters for very large files.