Merge PDFs into one document

How to merge PDF files

1. Add your PDFs. Drop in two or more documents. They open in your browser.
2. Set the order. Move each file up or down until the sequence matches what you need to submit.
3. Download the merged PDF. Pages are copied across losslessly, so nothing is re-compressed or re-rendered.

Frequently asked questions

Several PDFs, one file to submit

Applications love to ask for "a single PDF" containing several things — a form, supporting certificates, an ID proof, maybe a covering letter. If those arrive as separate files, this tool joins them into one document in the order you set. Add two or more PDFs, arrange them, and merge; the result is a single file ready to upload.

Quality and order

Merging here is lossless. Pages are copied intact into the new document — nothing is re-compressed or re-rendered, so text stays selectable and images keep their original quality. Order is entirely under your control: arrange the files before merging and the combined PDF follows your sequence exactly, first file to last.

Things worth knowing

• There's no fixed file limit — memory is the only real constraint, and dozens of ordinary documents merge in seconds.
• Encrypted PDFs need unlocking first. A password-protected file usually won't load; remove the password (open it, then print-to-PDF) before merging.
• Merging can push you over an upload cap. If the combined file is too big, follow up with the PDF compressor to bring it under the limit.
• Need to add photos as pages? Convert them with JPG to PDF first, then merge the result in.

Handled entirely in your browser

The merge runs locally using pdf-lib — your documents are combined in memory and the finished file downloads straight to you. Nothing is uploaded, so even a merge of sensitive paperwork stays private to your machine.