Merge PDF Files Online Free
Combine multiple PDF files into one document. Reorder files before merging. All processing happens in your browser — no upload, no signup.
Click or drag PDF files here
Supports multiple PDF files. All processing is done locally in your browser.
What is PDF Merge?
PDF Merge is a free online tool that combines multiple PDF files into a single document. Whether you have reports, contracts, scanned pages, or any PDF files you want to consolidate, this tool lets you upload them, reorder as needed, and download the merged result instantly — all without sending your files to any server.
How to Merge PDF Files
- Click the upload area or drag and drop your PDF files
- Use the up/down arrows to reorder files in your desired sequence
- Click 'Merge & Download PDF' to combine all files
- The merged PDF will download automatically to your device
PDF Merge Features
- Merge unlimited PDF files into one document
- Reorder files with up/down arrows before merging
- Displays page count for each uploaded PDF
- 100% browser-based — files never leave your device
- No file size limits imposed by the tool
Merge PDF FAQ
Is my PDF data secure when merging?
Yes! All PDF merging happens entirely in your browser using pdf-lib. Your files are never uploaded to any server, ensuring complete privacy.
How many PDF files can I merge at once?
There is no hard limit on the number of files. However, very large PDFs may be slow to process depending on your device's memory and processing speed.
Will the quality of my PDF be affected after merging?
No. The merge process copies pages directly from the source PDFs without re-encoding or compressing content, so the output quality is identical to the originals.