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FileSlim

Juraj Cukan

Founder, CEO & Lead Developer

Student, Comenius University - Faculty of Mathematics, Physics and Computer Science
Full-Stack Developer
Compression Algorithm Specialist
50M+ Files Processed

Juraj is a Computer Science student at Comenius University in Bratislava, Slovakia, and the sole creator of FileSlim. Frustrated with inefficient and expensive compression tools, he built FileSlim from the ground up as a free, privacy-first alternative. Working entirely alone, Juraj developed every aspect of the platform—from the compression algorithms to the user interface—ensuring complete browser-based processing that never uploads files to servers. His work has helped users worldwide compress over 50 million files while maintaining complete privacy and achieving 60-90% file size reductions.

Quick Answer

Yes, for most text-based documents. FileSlim uses maximum compression on embedded images and removes all unnecessary metadata. A 5-page text document with a few images typically compresses from 2-5MB down to under 200KB.

Can I compress a PDF to 200KB?

≤200KB
Target Size
Text PDFs
Best For
80-95%
Typical Reduction

When You Need a 200KB PDF

Email Attachments

Keep email attachments tiny for fast sending and receiving. 200KB PDFs load instantly on mobile devices.

Online Forms

Government portals, university applications, and HR systems often require documents under 200-500KB.

Compress Your PDF to 200KB Now

Upload any PDF and get it under 200KB — free, instant, private.

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