Merge PDFs without uploading them anywhere
Confidential paperwork shouldn't take a detour through someone's server just to become one file.
Yes. GigAI's PDF merger runs entirely in your browser using pdf-lib - your files are never transmitted to any server at any point. There is no account, no page limit and no watermark, which makes it safe for contracts, medical records and anything under NDA.
3 tools for this
Each one is free, private and runs in your browser. No sign-up, no watermark.
Merge PDF
Combine multiple PDF files into a single document, drag to set the order, then download. Free, fast and entirely in your browser.
Reorder PDF Pages
Drag the pages of a PDF into a new order, then download the rearranged file. Free, visual and fully in your browser. No uploads.
Compress PDF
Shrink a PDF's file size right in your browser. Pick a compression level, see exactly how much you saved, and download. No uploads, no watermark.
How to fix it
Follow these steps and you'll have it sorted in a couple of minutes.
- 1
Drop your PDFs on the merger
They load in browser memory only - watch the network tab: no upload request exists.
- 2
Order the files
Drag to arrange. Pages are copied losslessly with pdf-lib, never re-rendered.
- 3
Download the single PDF
The merged file is created on your device. Close the tab and nothing persists anywhere.
- Using a cloud merger for NDA documents - most free sites process files server-side and keep them temporarily.
- Merging before removing pages you don't want shared; delete pages first, then merge.
Frequently asked questions
More problems we solve
Ran into one of these too? Here's the fix.
- I need to combine several PDFs into oneApplications and submissions often want a single PDF. Merge your files in the right order, in seconds, without any software.
- My file is too big to emailOne preset, any file type. Get under the limit before you hit send, not after it bounces.
- Edit a confidential document without a cloud serviceA confidentiality clause and a cloud PDF editor are a contradiction. Local editing isn't.
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Ready? Start with Merge PDF
Free, private and instant: everything runs in your browser.