Are my images uploaded to a server?

No. Compression uses your browser's built-in canvas encoder, so the file never leaves your device. This is faster and more private than typical online compressors.

Image Compressor

Compress JPG, PNG and WebP images with a quality slider and instant before/after size comparison. Because compression runs in your browser, your photos are never uploaded anywhere.

100% free No uploads Runs in your browser No signup

Compress image

Drop an image to compressPNG, JPG or WebP · runs locally, nothing uploaded

Quality: 75%

60–85% usually looks identical at a fraction of the size

Output format

Compression uses the browser's native encoders — the same technology behind every major image pipeline. For maximum savings on photos, 70–80% quality is the sweet spot; use WebP when the destination accepts it.

How to use the Image Compressor

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

Frequently asked questions

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