PDF Merger
Smart MergerClick or drag files here to upload
Local secure processing · Large files supported · Privacy protected
1. How to upload PDF files?
Select PDFs to merge or drag and drop files into the upload area. Multiple files can be uploaded simultaneously.
2. How to adjust merge order?
Use the "Move Up" and "Move Down" buttons in the file list to adjust the order of files.
3. Important Notes
Ensure files are not encrypted and complete. Do not refresh the page during processing to avoid interrupting the merge.
Features
Flexible Ordering
Supports drag and drop sorting to freely adjust PDF merge order
Batch Processing
Merge multiple PDF files simultaneously for improved efficiency
Quality Assurance
Maintains original file clarity and quality after merging
FAQ
Is there a limit on how many PDFs I can merge?
There is no fixed file limit. Merging runs in your browser, so the practical limit is your device's memory. Very large batches may take longer on phones and older computers.
Can I merge password-protected PDFs?
PDFs that only restrict printing or editing are handled automatically. If a PDF needs a password to open, remove it first with Unlock PDF, then merge.
Does merging reduce quality?
No. Pages are copied into the new file as they are, so text, fonts and images keep their original quality. The merged file is about the size of the originals combined. Use PDF Compressor if you need it smaller.
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