Is there a file size limit?

There's no limit in the service itself. But since everything runs in your browser's memory, very large files may fail depending on your device.

Are my files uploaded to a server?

No. All merging happens directly inside your browser.

Please remove the password from protected PDFs first, then use them here.

First convert the image to a PDF with the Image to PDF tool, then merge it here.

Arrange multiple PDF files in any order and merge them into a single PDF. No file size limits — everything is processed in your browser.

Drag in PDF files or click to select

Select multiple at once · add them in merge order

Is there a file size limit?: There's no limit in the service itself. But since everything runs in your browser's memory, very large files may fail depending on your device.
Are my files uploaded to a server?: No. All merging happens directly inside your browser.
Can I merge encrypted PDFs?: Please remove the password from protected PDFs first, then use them here.
How do I add an image to a PDF?: First convert the image to a PDF with the Image to PDF tool, then merge it here.

Convert iPhone HEIC photos to JPG or PNG in seconds.

Shrink JPG and PNG images with no visible quality loss.

Change the pixel width and height of your photos to any size.

Combine multiple images into a single PDF.