Compress PDF to 400KB
Compress a PDF to 400KB online — reduce PDF file size to 400KB free, 100% in your browser. Nothing uploaded.
Processed on your device — nothing is uploaded
Reduce your PDF file size to 400KB with Toolzo — the 400KB target is preset, so just add your PDF and download a smaller file. Nothing uploaded.
How it works
Frequently asked questions
How do I compress a PDF to 400KB?
Add your PDF — the 400KB target is preset — then press Compress PDF.
Is it private?
Yes — compressed in your browser.
Does it work on mobile?
Yes — it runs in any mobile browser (Android & iPhone), no app needed.
Is it free and private?
Yes — free, no signup, and it runs in your browser so your file is never uploaded.