PDF Combiner Online Free
Merge any number of PDF files into a single document. Add files, drag to reorder them, and combine — all pages from every file are preserved at full quality.
Drop PDF files here
or click to browse — add as many as you need
Files to merge (0)
No account required · Files processed securely and deleted in 24h
Combining PDFs…
Uploading files
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Unlock Pro — files up to 200 MB each, batch merge, bookmark merging
Table of contents generation · Per-file page ranges · Custom output name
How It Works
Merge as many PDFs as you need in three steps
Add Your PDFs
Upload all the PDFs you want to combine. Drop multiple files at once or add them one by one — there's no limit on the number of files.
Drag to Reorder
Drag the files into the exact order you want them to appear in the combined PDF. Remove any file with a single click.
Download Combined PDF
Click Combine. All pages from every file are joined into one PDF in the correct order. Download immediately — no quality loss.
Features
Everything you need to merge PDF documents
Unlimited PDFs
Merge as many PDF files as needed in a single operation. Free users can upload files up to 50 MB each with no cap on file count.
Drag-to-Reorder
Arrange files in any order before merging. Drag rows up and down to set the exact page order — what you see is what you get.
Full Fidelity
Pages are copied exactly — text, images, vector graphics, fonts, bookmarks, and form fields are all preserved with no re-encoding or quality loss.
Remove Individual Files
Changed your mind? Remove any file from the queue individually without starting over. Add new files at any time before clicking Combine.
Bookmarks Preserved
Bookmarks (outlines) from each source PDF are retained and merged into the combined file's navigation panel — with correct page offset adjustments.
100% Private & Secure
All uploaded files are encrypted in transit, processed in isolated containers, and deleted within 24 hours. We never read or retain your documents.
Frequently Asked Questions
No. You can merge any number of PDF files. Each individual file must be under 50 MB for free users. There's no cap on the total number of files in one merge operation — upload as many as you need.
No. PDF merging copies page content byte-for-byte without any re-compression, re-rendering, or re-encoding. Images, text, and vector graphics remain at their original quality. The combined file size is approximately the sum of the input file sizes.
PDFs with owner restrictions (print-only protection) can usually be merged without the password. PDFs requiring a password to open must be unlocked first using the Unlock PDF tool before they can be combined.