Unlimited and free
No daily cap, no file count limit, no signup, no email wall. Use it as often as you need, for as long as you need.
Merge PDFs
Combine PDFs with drag-to-reorder previews
Drop two or more PDF files to see each one's first page. Drag rows to set the order. Hit Merge and download your combined PDF.
Drop PDFs here to merge
or click anywhere in this zone to browse. No limit on file count. Up to 100 MB per file.
Nothing queued yet — your files will appear here as a reorderable list with previews.
Merge PDF
Combine PDF files free with visual ordering
Proofmark PDF's merge tool is built for people who need to combine two or twenty PDFs without fighting a paywall. Drop every file at once, confirm the order with first-page previews, drag rows to rearrange them, and hit Merge. Your combined PDF downloads immediately.
Page-level previews
Every page is rendered as a thumbnail by PDF.js — locally in your browser — so you can confirm exactly what you are merging or splitting.
Private by default
Files are processed in memory and returned immediately. Nothing is persisted, archived, or analysed after your response is sent.
No watermark
Your merged or split PDFs contain only your pages. Proofmark never stamps, brands, or alters your content.
How to merge PDF files
Drop your PDFs
Drag PDF files into the drop zone or click to browse. Every file is read locally in your browser.
Reorder with drag-and-drop
Drag rows to reorder. Each file shows its first-page preview so you can confirm the sequence.
Merge and download
Click Merge. Your combined PDF downloads instantly. No signup, no watermark, no daily limit.
Frequently asked questions
Is Proofmark PDF really free with no limits?
Yes. There is no daily cap, no file count limit, and no signup. The only cap is 100 MB per upload to keep the server responsive.
Are my files uploaded or stored anywhere?
Files are processed in memory and deleted as soon as the response is returned. Nothing is persisted on disk or in any database.
Do I need an account?
No account, no email, no login. Open the page and start merging or splitting.
Does Proofmark PDF add a watermark?
Never. Your merged or split PDFs contain only your original pages. No branding is stamped into the output.
What is the maximum file size?
Each upload is capped at 100 MB. If you need to work with larger files, split them first and merge selectively.
Can I reorder PDFs before merging?
Yes. Drag any row in the merge list to reorder it. Each file shows its first page as a preview so you can confirm the sequence visually.
How do page ranges work when splitting?
Use commas and dashes like 1-3, 5, 8-10. Each comma-separated group becomes its own output PDF, so the example creates three files.
Can I open encrypted or password-protected PDFs?
Not in this build. Remove the password from your PDF first (any reader with owner access can re-save without encryption), then upload.