About PDF Merger
Free online PDF merger tool to combine multiple PDF files into one PDF. No server upload required, all operations are done locally in your browser to protect your file privacy.
PDF MergePDF ToolFile Processing
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User Guide
Key Features
- PDF merger tool that combines multiple PDF files into one PDF while keeping the original page order
- No server upload required — everything runs locally in your browser (via pdf-lib), so your files never leave your device
How to Use
- Open the tool page (no download or install needed) and click or drag-drop PDFs to upload — up to 50 files, 100 MB each
- Drag to reorder the files in the list to set the merge order, then click "Merge"
- Preview the result inline, then click "Download" to save the merged PDF
Important Notes
- This tool is completely free and requires no sign-up
- Everything runs locally in your browser — your data never leaves your device
Frequently Asked Questions
What is PDF Merger?
Free online PDF merger tool to combine multiple PDF files into one PDF. No server upload required, all operations are done locally in your browser to protect your file privacy.
How do I use PDF Merger?
Open the tool page (no download or install needed) and click or drag-drop PDFs to upload — up to 50 files, 100 MB each Drag to reorder the files in the list to set the merge order, then click "Merge" Preview the result inline, then click "Download" to save the merged PDF
What should I know before using PDF Merger?
This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device
Is PDF Merger free to use?
Yes, PDF Merger is completely free. No download or installation required — it runs right in your browser.