Merge PDF
betaCombine several PDFs into one, in any page order — in your browser
How it works
Drop every PDF on the page at once — the first opens and the rest are appended — or open one and use Insert another PDF in the Organise tab to add files at any position. The pages appear as tiles: drag them into order, rotate or delete the ones you do not need, and Save writes the merged document. Pages are copied with their comments, form fields and links, and page labels and the outline of the first file are kept. Pictures dropped alongside become pages too.
Questions
Can I choose which pages of each file to keep?
Yes. Insert the whole file, then delete the pages you do not want in the Organise tab, or extract a selection to a new file. Pages can be dragged into any order across files.
Do forms and comments survive the merge?
Yes — pages are copied with their annotations and form widgets. Two forms with fields of the same name keep both fields.
Is my file uploaded?
No. Everything runs in your browser — pdf.js draws the document and pdf-lib rewrites it in a background thread — and Save writes to your disk or downloads a copy. Nothing leaves your device.