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Why this runs on your computer

There is no upload: The work happens in this tab. Your file never travels, so there is no copy of it anywhere but your own disk.
Nothing to delete later: Sites that upload promise to delete your file afterwards. That promise only matters because the file was theirs to hold.
It works with the Wi-Fi off: The honest test. Turn off your connection and the tools keep working, because everything they need is already here.

Drop your PDF hereto load the tools

Nothing is uploaded — the tools run right here

Applies to every loaded image

Look Strength 100% Brightness Contrast Saturation Vibrance Vignette

Max width Format Shape

Shape Size Across Down Border

Text Where

100%

Merge PDF files without uploading them

Combine several PDFs into a single document — here in this tab, with nothing uploaded.

How to merge pdf

Drop in two or more PDFs.
Drag them into the order you want.
Press Merge and save the result.

Why this one stays private

Merging is where people paste together contracts, invoices and medical records — the exact documents you would not hand to a stranger's server.

Questions

Is my PDF uploaded anywhere?

No. The merge happens in your browser using your own computer's memory. There is no upload step, and no server ever receives the file.

Is there a file size limit?

There is no server limit because there is no server. The practical limit is your own computer's memory, which is far more generous than a typical upload cap.

Can I merge more than two PDFs?

Yes. Load as many as you like, put them in order, and merge them all in one pass.

How to merge pdf

Why this one stays private

Questions

Other tools here