Combine up to 50 PDFs into one file in the order you set. See each file's page count and first page, drag to reorder, then download. Runs in your browser.
Works in your browser. What you paste or upload is processed on your device.
Choose or drop two or more PDF files. You can add more later with Add PDFs.
Each row shows the first page, the page count and the size. Locked files are marked so you can swap them out.
Drag files into place, use the up and down arrows, or press Sort A–Z. The top file comes first.
Press Merge and download merged.pdf, or go back to change the order and merge again.
Merge PDF joins several PDF files into a single PDF, one after another, in the order you choose. Add the files, and each one is opened straight away so you can see its first page and how many pages it has. Drag a file up or down, use the arrow buttons, or sort the list by file name, and the total page count updates as you go. When the order is right, one press writes the merged file.
The merge runs in your browser with pdf-lib. Pages are copied as they are, not printed again, so text stays selectable, images keep their quality, and the page sizes of each file are kept, even when you mix A4, Letter and landscape pages. Fillable form fields stay fillable in the merged copy.
Honest limits: you can add up to 50 PDFs, each up to 200 MB, and very large merges are limited by your device's memory, so a phone can struggle with several hundred megabytes. Password-protected PDFs, or PDFs locked against editing, have to be unlocked first. Bookmarks (the outline panel) from the original files are not copied into the merged PDF, and a link inside one file that jumped to a page of the same file may stop working.
Sending one PDF instead of six is easier for everyone: an application with a CV, cover letter and certificates, a monthly bundle of invoices, or scanned pages that came out as separate files. Many online mergers upload your documents to their servers first. Here the files stay on your device, which matters for ID documents, bank statements and contracts.
Something else? Ask the team
Yes. The files are read and merged by your own browser, and nothing is uploaded to AI Rank Lab or anyone else. Our server only records that a run took place, for the daily free-run count, and never receives the files.
Drag a file by its row to a new position, or use the up and down arrows on the right of each row, which also work with the keyboard. Sort A–Z orders the list by file name, with numbers in natural order, so file 2 comes before file 10.
Yes. Open this page in Safari or Chrome, tap Choose PDFs to merge and pick files from Files, iCloud Drive or Google Drive. Use the arrow buttons to reorder on a touch screen. The merged PDF downloads to your Downloads or Files app.
Up to 50 PDFs per merge, each up to 200 MB. The real limit is your device's memory: a laptop handles a few hundred megabytes in total comfortably, while an older phone may run out of memory with very large scans. If that happens, merge in two batches and then merge the results.
No. Pages are copied into the new file as they are, not converted to images, so text stays sharp and selectable and pictures keep their resolution. Page sizes and orientation from each file are kept too.
A PDF with an open password, or one locked against editing, is encrypted, and its pages can't be copied into a new file until it is decrypted. Use the Unlock PDF tool with the password, then add the unlocked copy here.
Fillable form fields stay fillable in the merged PDF; if two files use the same field name, those fields may fill in together. Bookmarks from the original files are not copied, so the merged file has no outline panel. Links to websites keep working.
You get 1 free run of this tool per day. After that, each run costs 5 credits from a free AI Rank Lab account (1 credit is 1 US cent). A run is one press of the main button; opening the file, page previews and changing options before that are free. If a run fails, it is handed back automatically. Signed-out visitors are counted per internet connection, so if your free run is already used, signing in gives you your own.
Each one opens on its own page and works straight away, with no sign-up.
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