Free PDF Merge Online
Combine multiple PDF files into a single document. Drag to reorder files in any sequence before merging. No upload — powered by pdf-lib, 100% browser-based and private.
Drop 2+ PDF files here or browse
Add multiple PDFs · Drag to reorder · Max 100 MB each
About PDF Merge
Merge PDFs instantly in your browser using pdf-lib. Upload two or more PDF files, use the up/down arrows to set the order, then click "Merge PDFs". The resulting PDF preserves all pages from every input file in the order you choose. Your files are never uploaded to any server.
Frequently Asked Questions
You can merge as many PDFs as your browser memory allows. For very large files, keep the total size under 200 MB combined for best performance.
Page content (text, images, graphics) is fully preserved. Complex features like interactive form fields, JavaScript, and bookmarks may not survive the merge process as pdf-lib works at the page-content level.