Merge PDF Files Online
Combine PDFs in the exact order you choose.
Choose PDFs to merge
Select two or more PDFs. You can preview and reorder them before anything is processed.
PDF files · 50 MB per file current limit · up to 20 PDFs · local first-page previewsHow to merge PDF files
Upload two or more PDFs, inspect a local first-page preview for each file, and arrange the files in the exact order you want before merging. Preview rendering stays in your browser; processing starts only when you choose Merge PDFs.
Select your file
Choose the supported file from your device or drag it into the upload area.
Set the action
Choose the pages or settings needed for this tool.
Download and check
Open the result and verify it before replacing your original file.
Combine PDFs in the order you choose
Visual file ordering is useful for reports, applications, project packs and scanned sections that arrived as separate documents. Drag a file card or use the Earlier and Later controls so the visible file sequence matches the final document sequence. The processing panel reports the observable request state and an estimated time remaining; it does not invent upload or server stages that the browser cannot verify.
What to check after merging PDFs
Open the merged result and verify the boundary between source files, total page count and any forms, signatures or unusual interactive content. The result reports the measured browser request duration separately from the earlier estimate. If individual pages inside the merged document need rearranging afterward, continue with Organize PDF.
The current merge workflow accepts 2 to 20 PDFs, up to 50 MB per source file, up to 200 MB of source PDFs combined, and up to 1,000 pages in the merged output. It keeps every page from each source file and previews only the first page of each selected PDF locally. It merges whole PDFs only: it does not interleave, rotate or remove individual pages before merging, and password-protected source PDFs must be unlocked first with authorization. Use Organize PDF, Rotate PDF or Remove PDF Pages for page-level tasks.
Frequently asked questions about Merge PDF
Can I preview PDFs before I merge them?
Yes. PdfnMore renders the first page of each selected PDF locally in your browser so you can identify files before processing. Selecting files for preview does not start a merge request.
Can I change PDF order or individual pages before merging?
You can reorder whole source PDFs by dragging file cards or using Earlier and Later. The current Merge PDF workflow does not interleave, rotate or delete individual pages; use Organize PDF, Rotate PDF or Remove PDF Pages for page-level changes.
What limits apply to Merge PDF?
A merge can contain 2 to 20 PDFs, each source file can be up to 50 MB, the selected source PDFs can total up to 200 MB, and the merged output can contain up to 1,000 pages. Password-protected source PDFs need to be unlocked first when you are authorized to do so.