CompressTo20KB vs TinyPNG
2025 Comparison
TinyPNG is one of the most popular image compressors — but it uploads your files to their servers, limits free users to 20 images/month, and has no exact KB control. Here's how the two tools compare.
Feature Comparison
| Feature | CompressTo20KB | TinyPNG |
|---|---|---|
| Privacy | ✅ 100% in-browser | ❌ Uploads to server |
| Free limit | ✅ Unlimited | ❌ 20 images/month free |
| Exact KB mode | ✅ Yes — any target | ❌ No |
| Bulk compression | ✅ Up to 50 images | ⚠️ 20 max (free) |
| Output formats | ✅ WebP, AVIF, JPEG, PNG | ⚠️ PNG & JPEG only |
| USCIS / Passport mode | ✅ Built-in presets | ❌ No |
| Before/After compare | ✅ Yes | ❌ No |
| Price | ✅ Free forever | ⚠️ $25/month Pro |
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FAQ
❓ Is CompressTo20KB better than TinyPNG?
For privacy-conscious users and those needing exact file sizes, yes. CompressTo20KB processes everything in your browser — nothing is uploaded to any server. TinyPNG uploads your images to their servers.
❓ Why is TinyPNG limited to 20 free images?
TinyPNG uses server-side processing which costs money, so they limit free usage to 20 images per month. CompressTo20KB is completely browser-based and therefore free with no limits.
❓ Does CompressTo20KB support PNG like TinyPNG?
Yes. CompressTo20KB supports PNG, JPEG, WebP, AVIF, and HEIC — more formats than TinyPNG.
❓ Can I compress to an exact file size with TinyPNG?
No. TinyPNG compresses by quality percentage only. CompressTo20KB has a unique Exact KB mode where you type a target size (e.g., 200KB) and the tool hits it precisely.