Free online file compressor 100% private & secured

Q: How do you compress files without uploading them?

We use WebAssembly to run professional compression engines like FFmpeg and MozJPEG directly in your browser. This means your private files never touch our servers.

Q: Is SimpleCompressor really free?

Yes. Because we don't have to pay for expensive cloud processing servers, we can offer professional-grade compression to everyone for free.

Q: What is the maximum file size?

You can process files up to 2GB. Since it's local, the limit is only restricted by your device's memory.

Q: How do I cancel my subscription?

You can cancel anytime with one click from your account settings. Your plan remains active until the end of the billing month.

Reduce video size, shrink PDFs, and condense audio files with privacy-safe browser compression. No signup. Fast downloads.

Files stay on your device · 100% Private · Zero Server Cost

Images

Compress Image

Optimize JPG, PNG, and WebP without losing visible quality.

Convert Image

Convert between JPG, PNG, WebP and resize in batch.

Add Name & Date

For UPSC, SSC & Govt forms

Merge Images

Photo + Signature combiner

Video & Audio

Compress Video

Shrink MP4 and MOV files for easier sharing and faster uploads.

Compress Audio

Reduce bitrate of MP3 and WAV files with professional-grade encoders.

Documents & Files

Compress PDF

Compress large PDF documents for email while keeping text crisp.

Create ZIP

Bundle and compress any files into a single ZIP archive.

Ready to optimize your files?

Join thousands of users who trust our private, browser-based compression.

Ready to Optimize

0 Files Uploaded

100% Private & Local

How it works

Upload

Select files locally. They stay in your browser — nothing is uploaded.

Auto-Process

Our local algorithms shrink file size while maintaining high quality.

Download

Save your optimized files instantly. No waiting, no server queues.

Why Choose SimpleCompressor?

Feature	SimpleCompressor	Competitors
Data Privacy	Files stay on your device	Files uploaded to servers
Processing	Instant (Local)	Slow (Cloud queue)
Watermarks	Never	Often for free users
Signup	Not required	Often forced
File Limit	Up to 2GB	Usually <100MB free

Frequently Asked Questions

How do you compress files without uploading them?

We use WebAssembly to run professional compression engines like FFmpeg and MozJPEG directly in your browser. This means your private files never touch our servers.

Is SimpleCompressor really free?

Yes. Because we don't have to pay for expensive cloud processing servers, we can offer professional-grade compression to everyone for free.

What is the maximum file size?

You can process files up to 2GB. Since it's local, the limit is only restricted by your device's memory.

How do I cancel my subscription?

You can cancel anytime with one click from your account settings. Your plan remains active until the end of the billing month.

Guides & Insights

Learn how to optimize your digital life.

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Learn why WebP and AVIF are the new standard and how file size directly affects your Core Web Vitals ranking.

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The Power of WebAssembly: In-Browser Video Compression

A deep dive into how we run FFmpeg — a 20-year-old C library — entirely inside your web browser using WebAssembly.

2025-04-228 min read

Privacy in the Age of SaaS: Why Local-First Tools Are the Future

Why enterprises are increasingly choosing 'local-first' tools, and how SimpleCompressor fits into the zero-trust architecture trend.

2025-03-155 min read