Merge PDF

No fixed limit. Since the merge happens on your device, the constraint is available memory — dozens of ordinary documents are no problem.

No. Pages are copied across as-is, without re-compression, so text stays selectable and images keep their original resolution.

Not while it is encrypted. Remove the password in the application that created the file, then merge the unlocked copy.

Split the source documents first with Split PDF to pull out the ranges you want, then merge the resulting files here.

Links and most annotations survive the merge. Interactive form fields with the same name across documents can collide, so check the result if the originals contained forms.

Yes, completely. There is no account to create, no trial that expires, no watermark on the output and no feature held back behind a paywall. The site is supported by unobtrusive advertising, not by charging you.

No. Merge PDF runs entirely inside your browser, so your files never leaves your device. You can confirm this by opening your browser's network tab — there is no upload request.

Yes. Because processing happens locally, there is no copy of your data on any server to leak, subpoena or lose. Nothing is logged and nothing is stored.

Yes. The interface is built mobile-first, with touch-friendly controls and layouts that adapt to small screens. Everything that works on a desktop works on a phone.

Once the page has loaded, yes. All processing is local, so you can carry on working if your connection drops.

Any current version of Chrome, Edge, Firefox, Safari or Opera, on desktop and mobile. If something behaves oddly, updating your browser resolves it in almost every case.

There is no server-side limit because nothing is uploaded. Files up to about 100 MB are comfortable on a typical device; beyond that, processing speed depends on your machine's memory.

Yes. Whatever you produce here is yours — use it in client work, products, packaging or publications. There is no watermark, no licence to accept and no attribution required.

No. There is nothing to keep: your data is never transmitted, and it is cleared from memory as soon as you close or reload the page.