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Merge PDF
Drag files here orclick to upload
2 files, max 5M each
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Tool Description
Merge PDF is a free-to-use online PDF merge tool that is ready to use without installation or registration. It combines multiple PDF files into a single PDF document, supporting both normal / reverse arrangement, ideal for material consolidation, contract archiving, and report compilation. All processing is done locally in your browser, providing 100% privacy — your files are never uploaded to any server. Whether you are consolidating scattered materials, archiving supplementary agreements, or compiling a final report, it handles it all with ease — drag, drop, and go, with results comparable to professional PDF software. (Note: the free tier refers to the daily free quota, not unlimited use; high-frequency or professional needs can unlock more via membership)
How to Use
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Upload Files
Click the upload area or drag and drop multiple PDF files into the box; you can add files in batch
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Arrange Order
Adjust the file order with drag-and-drop sorting; the merged result follows this order
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Choose Direction
Choose the arrangement order: Normal (current order) or Reverse (flip the whole order)
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Process & Download
Click the "Start Process" button and download the merged PDF when done
Use Cases
- Consolidate materials: combine scattered PDFs into one complete document
- Contract archiving: merge supplementary agreements and attachments into the main contract
- Report compilation: gather chapter PDFs into a final report
Key Advantages
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Daily Free Quota
Enjoy free usage every day, covering everyday merge needs at zero cost with full functionality
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Privacy & Security
All processing happens locally in your browser; your files are never uploaded to any server, protecting your data privacy throughout
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Batch Merge
Upload multiple files in batch and merge many PDFs at once for great efficiency
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Drag-to-Sort
Freely reorder files with drag and drop for fully controlled merge results
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Normal / Reverse Toggle
Switch between normal and reverse order with one click to suit different arrangement needs
Normal vs Reverse Explained
The table below explains the difference between the two arrangement modes to help you choose quickly:
| Mode | Description | Best For |
|---|---|---|
| Normal | Merge in the current order of the files | Documents with a clear sequence that need to be consolidated in order |
| Reverse | Flip the current file order before merging | When you need pages or files arranged in the opposite order |
FAQ
No. The tool generates a brand-new merged PDF; your original uploads stay untouched, so you can use it safely.
Multiple files are supported. Limited by device memory, very many or very large files may be slow — keep each file under 200MB.
Remove the password first. For security reasons, encrypted or password-protected PDFs should have their password removed before merging.
Yes. You can reorder files with drag-and-drop sorting and switch between "Normal / Reverse" arrangement.
Completely secure. Files are processed entirely in your local browser and never uploaded to any server, so your data is absolutely safe.
No. Merging is a straightforward combination; the clarity, layout and content of every page remain unchanged.
Very fast. Processing happens instantly in your browser with no upload wait — multiple documents merge quickly.
Yes. This is a pure web app that works directly in the browser on phones, tablets, and computers with no installation required.
Free usage every day at zero cost. We provide a daily free quota for every user that easily covers light needs; upgrade to membership for higher processing capacity when needed.
This tool is for PDF merging. It only supports merging PDF files with each other; convert other formats to PDF first.
Roughly equal to the source files. The size of the merged PDF is about the sum of the source files — more content means a larger size.
No. Each file keeps its internal page order; the order between files is determined by your drag-and-drop sorting and normal / reverse setting.
Content last updated：2026-07-10
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