How to merge PDFs
- Drop in the PDFs you want to combine.
- Arrange them with the ↑ / ↓ buttons — top goes first.
- Press Merge and download the combined file.
Why merge locally instead of online?
Most PDF websites ask you to upload your documents to their servers — contracts, payslips, IDs. LocalKit's merger loads the files into your browser's memory and writes the combined PDF on your own device. It also means no waiting for uploads: a 50 MB file merges just as fast as a 1 MB one, limited only by your hardware.
Frequently asked questions
Is it safe to merge confidential PDFs here?
Yes. The merging runs entirely in your browser — files are never transmitted anywhere. You can open your browser's network tab and watch: zero requests carry your data.
Is there a page or file size limit?
No artificial limits. The practical limit is your device's memory, which is far above what most online services allow for free.
Are bookmarks and forms preserved?
Pages, text, images and form fields of the source pages are copied as-is. Top-level bookmarks from the original files are not carried over into the merged document.