Yes. The conversion runs entirely in your browser — your file is never uploaded to any server, so it stays on your device.

What's the file size limit?

Every tool is free with a 25 MB per-file limit — no accounts and no paid tiers.

Do I need to install anything?

No. ConvertThoseFiles runs entirely in your browser — no plugins, no desktop app, no signup required.

Reduce PDF size while keeping the document crisp.

Optimizes embedded images and metadata so PDFs become email-friendly while preserving the original layout and fonts.

Open the Reduce PDF Size converter Private uploads Files never leave your device Free — no signup

1
Add your PDF
Drag and drop a PDF file (or pick one from your device). Supports files up to 25 MB.
2
Convert privately
The conversion runs locally in your browser and produces a clean smaller PDF file — nothing is uploaded.
3
Download your smaller PDF
Grab the smaller PDF in seconds. Your file never leaves your device.

Is my file private?: Yes. The conversion runs entirely in your browser — your file is never uploaded to any server, so it stays on your device.
What's the file size limit?: Every tool is free with a 25 MB per-file limit — no accounts and no paid tiers.
Do I need to install anything?: No. ConvertThoseFiles runs entirely in your browser — no plugins, no desktop app, no signup required.

Launch the live Reduce PDF Size converter and have your file ready in seconds.