Compress Image to 20KB Online Free

Compress scanned signatures, thumb impressions, and small profile avatars to under 20 KB. Fast, private, and 100% in-browser.

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Drop your image here, or browse

Supports JPG, PNG, and WebP. 100% Client-side. Your photos never leave your device.

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Preset Active: Portal Signature (20 KB)

Frequently Asked Questions

How do I compress my scanned signature to under 20 KB?

Upload your signature photo, select the 20 KB preset, and click download. The signature strokes remain dark and crisp while reducing background noise.

What dimension is best for an online signature?

A standard signature box is typically 300 × 120 pixels or 140 × 60 pixels. Both dimensions are pre-configured in our presets.