What this tool does
Joins multiple PDF files into one, preserving the content and page order of each source file. Bookmarks, form fields, and embedded images are retained. The output is a single standard PDF.
PDF and document tool
Merge PDF
Combine multiple PDF files into one document — in any order you choose. Drag and drop your PDFs, reorder them if needed, then click Merge. The combined PDF downloads immediately. Processing runs on FormatNest's server; files are deleted within 60 minutes.
Complete guide
How to use Merge PDF
PDF tools guide for merge pdf users.
PDF merging joins multiple PDF files end-to-end into a single document. The page order follows the order you arrange the files before clicking Merge. All content in each source file — text, images, form fields, bookmarks — is preserved in the output.
Common use cases: combining a cover letter with a resume, merging monthly reports into an annual document, combining scanned pages into a single PDF, or assembling a portfolio from individual project PDFs.
There is no practical limit on the number of files you can merge. The total combined size of all files must be within your plan's limit (50 MB for free, 500 MB for Pro).
How to use it
Upload two or more PDFs. Drag them into the order you want. Click Merge. Download the combined PDF. You can upload as many files as needed in one batch.
Best practices
Arrange files in the correct order before clicking Merge — you cannot reorder pages after merging without a separate tool. If any source file is password-protected, remove the password using PDF Unlock first.
Quick checklist
- Confirm the input file, value, text, or measurement is correct before running the tool.
- Use the visible dropdowns and settings to choose the output format, unit, quality, size, or result style.
- Check the preview, result text, or downloaded file before using it for important work.
- For private or sensitive data, prefer browser-based tools and avoid uploading files unless the tool clearly needs server processing.
Answers
Merge PDF FAQs
How many PDFs can I merge at once?
There is no fixed limit on the number of files. Free users are limited by the 50 MB total size cap. Pro users get 500 MB. Upload all files in one session for best results.
Will the page numbering from the original PDFs be preserved?
Page numbers that are part of the page content (typed into the document) are preserved. Page numbers added by PDF viewers (like Acrobat's status bar) are viewer-generated and do not appear in the merged file.
Can I merge password-protected PDFs?
No. Remove the password using PDF Unlock first, then merge.
What order will the pages appear in?
The order you arrange the files in the upload list. Drag to reorder before clicking Merge.
Can I merge PDFs with different page sizes?
Yes. The output PDF preserves each page at its original size. The pages do not get resized to match each other.
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