CompressTo20KB vs Kraken.io
2025 Comparison
Kraken.io is popular among developers and Shopify merchants — but it requires a paid account, uploads your images to their servers, and has no exact KB targeting. Here is how the two tools compare.
Feature Comparison
| Feature | CompressTo20KB | Kraken.io |
|---|---|---|
| Privacy | ✅ 100% in-browser | ❌ Uploads to server |
| Price | ✅ Free | ❌ $5–$9/month |
| Exact KB mode | ✅ Any target KB | ❌ No |
| Bulk compression | ✅ Up to 50 images | ⚠️ API only for bulk |
| Output formats | ✅ WebP, AVIF, JPEG, PNG | ⚠️ JPEG, PNG, GIF, SVG |
| USCIS / Passport mode | ✅ Built-in presets | ❌ No |
| No signup required | ✅ Zero signup | ❌ Account required |
| Shopify preset | ✅ One-click | ❌ Manual settings |
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FAQ
❓ Is CompressTo20KB a free Kraken.io alternative?
Yes. CompressTo20KB is completely free with no account required. Kraken.io requires a paid plan for full access and an account even for free features.
❓ Does Kraken.io upload my images to their server?
Yes. Kraken.io processes all images on their servers. CompressTo20KB processes everything in your browser — your images never leave your device.
❓ Can I compress to an exact file size like 20KB?
CompressTo20KB has a unique Exact KB mode — type any target like 20KB, 50KB, or 200KB and the tool hits it precisely. Kraken.io does not offer this feature.
❓ Which is better for Shopify images?
CompressTo20KB has a built-in Shopify preset that automatically sets WebP format, optimal quality, and correct dimensions. No app installation or monthly fee needed.