PDF Merge
/pdf-mergeCombine multiple PDF files into one document. Reorder pages with drag-free up/down controls, browser-only.
Sending five separate PDFs when one combined file would do is a common workflow headache. This tool merges multiple PDFs into a single document and lets you reorder the files before combining. The output preserves the pages of every input exactly. Merging runs locally, so your documents never get uploaded.
- 01Upload
- 02Configure
- 03Run
- 04Download
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How to use
How to use PDF Merge
- 1Drop one or more PDF files onto the upload zone.
- 2Reorder the files with the up and down controls if needed.
- 3Click 'Merge PDFs' to combine them into one document.
- 4Download the merged PDF.
FAQ
Frequently asked questions
Everything you need to know about pdf merge.
How many PDFs can I merge?
As many as you like. Files are added to the list one batch at a time and combined locally in your browser.
Can I reorder the files?
Yes. Up and down arrow controls on each entry set the order in which the files are merged into the output document.
Does merging degrade quality?
No. Pages are copied into a new document without re-encoding, so text, vectors, and images stay intact.
Can I cancel a long merge?
Yes. A Cancel button aborts the merge mid-process, which is useful when processing many large files.
Why did my merge fail?
The loader attempts encrypted files with encryption ignored, but heavily corrupted files can still fail. Re-export the file and retry.
Are my PDFs uploaded?
No. Everything happens locally with pdf-lib in your browser, so your PDFs never leave your device for merging.
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