Combine multiple PDFs into one file, in the order you want. 100% browser-side — your documents never leave your device.
No. Merging runs entirely in your browser with pdf-lib. You can even disconnect from the internet after the page loads — it still works.
Each file can be up to 100 MB, with no limit on page count or how many files you merge. The cap exists because merging happens in your browser using your device memory.
Yes. Use the up/down arrows on each file row — pages are appended in the listed order.
No. Password-protected files are rejected with a clear message rather than producing a broken output. Remove the password in your PDF reader first, then merge.