About Merge PDF
Combine multiple PDF files into a single document.
- Input
- Output
- Download the result in the format shown beside its filename. Batch ZIP is available only where the result area offers it.
- Processing
- The current implementation processes the selected files on this device. Processing libraries, language data or models may be downloaded separately; these resource requests do not require uploading the selected file.
- Limits and behavior
- At least two PDFs are required. Use the ordering controls to determine the final document order. File capacity depends on device memory and input encoding. Large or unsupported files can fail; encrypted PDFs may need to be unlocked before use. There is no site-wide file-size guarantee.
How to use Merge PDF
- Choose a supported file, or add and order files when the tool supports multiple inputs.
- Review the settings, then select Start processing. Wait for the result or a visible error.
- Check the result and download the output. Adjust settings and process again if needed.
Questions about Merge PDF
What input does Merge PDF accept?
How do I save the result from Merge PDF?
Download the result in the format shown beside its filename. Batch ZIP is available only where the result area offers it.
What limitations should I know about?
At least two PDFs are required. Use the ordering controls to determine the final document order. File capacity depends on device memory and input encoding. Large or unsupported files can fail; encrypted PDFs may need to be unlocked before use. There is no site-wide file-size guarantee.
Where does processing happen?
The current implementation processes the selected files on this device. Processing libraries, language data or models may be downloaded separately; these resource requests do not require uploading the selected file.
Implementation notes reviewed: 2026-10-25