Merge PDF
Combine multiple PDF files — and images — into a single document, free and entirely in your browser. Your files are never uploaded to a server.
How to merge PDF files
- Add your PDFs. Drag and drop your files onto LambiPdf, or click “Choose files.” You can add images (JPG/PNG) too — each becomes a page.
- Arrange the pages. Drag pages into the order you want, rotate them, or delete any you don't need.
- Merge & download. Click Merge PDF and your combined file is generated on your device and saved to Downloads.
Merge PDFs without uploading
The document tools process file contents in your browser rather than uploading them for processing. Working files remain in page memory; downloads remain wherever you save them. Informational pages may load ads or analytics; the document-opening page excludes them. Read the privacy policy for details.
More free PDF tools
Merge PDF — FAQ
Is merging PDFs on LambiPdf free?
Yes — it's completely free, with no sign-up and no watermark.
Are my files uploaded when I merge?
No. The merge happens entirely in your browser; your files never leave your device.
Can I merge images with PDFs?
Yes. Add JPG or PNG images and they're turned into pages you can combine with your PDFs.
Is there a limit on how many PDFs I can merge?
There's no fixed limit — it depends on your device's memory, since everything runs locally.