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Combine multiple PDF files into a single document in your browser.
Workspace
Private · Browser-based · No account · No upload
Merge PDF online free when you need several documents as one file for email, applications, or archiving. AllToolHub combines PDFs in your browser: pick files, set order (top to bottom becomes page order), run merge, and download a single PDF. Nothing is uploaded to our servers for processing.
Common use cases include stitching scanned pages, attaching exhibits to a cover letter, combining monthly statements, or joining coursework into one hand-in. Unlike cloud suites that push accounts and daily limits, this tool is built for quick, private jobs on the device you already have open.
For best results, merge similar page sizes when possible and keep huge image-heavy scans under your device’s memory comfort zone (often under ~80 MB total). After merging, open the file once to confirm page order. If the result is too large to send, use Compress PDF next; if you only need some pages, Split PDF first.
Add two or more PDF files in the order you want them combined.
Remove or re-add files if the order is wrong (top to bottom becomes page order).
Click Merge - pages are stitched together entirely in your browser.
Download merged.pdf. Large files may take longer on mobile devices.
Yes. Merge PDF on AllToolHub is free, requires no account, and is built to run in your browser without a paid plan or watermarks from us.
Processing is designed to happen locally in your browser whenever possible. PDF bytes are processed in the browser whenever possible so drafts and contracts stay on your device. Standard web hosting may still log technical page requests, not your file contents.
After the first visit, the Progressive Web App cache can keep many pages available offline. Tool scripts must be cached first; heavy libraries load when you open the tool.
Keep an original backup before irreversible edits like compression or permanent page deletes. Related tools appear in the sidebar if you need a neighboring workflow.
Modern Chrome, Edge, Firefox, Safari, and mobile equivalents. Some advanced file or crypto features need a recent browser version.
Limits depend on your device memory. For best results keep total size under ~80 MB and avoid dozens of large scanned PDFs at once.
Page content is copied into a new document. Advanced interactive features may not transfer fully depending on the source PDF.
A merged PDF is one document with continuous pages. A ZIP is a container of separate files. Forms that say “upload one PDF” want a merge, not a zip.
Those products are full freemium cloud suites. AllToolHub focuses on browser-local processing without an account for core jobs. Use cloud suites if you need their specific workflows or already pay for a plan.
Tips, comparisons, and how-tos related to this tool.