Is there a file size or page limit when merging PDFs?

No. KissThePDF has no artificial file size or page count limits. You can combine large documents directly in your browser.

Can I merge images along with PDF files?

Yes. Use our Images to PDF or Photo Album tools to convert images to PDF first, or merge them directly.

Standard page content, bookmarks, and internal links from the original documents are preserved during the merge process.

If a PDF has an open password, unlock it first using our Decrypt PDF tool before merging.

No. All processing happens 100% locally inside your web browser. Your confidential data never leaves your device.

100% Client-Side Engine