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Compress PNG to 20 KB

Hit a 20 KB limit exactly — with smart format handling so small targets are actually reachable. Free, private, in your browser.

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JPG · PNG · WebP · HEIC · HEIF — processed privately in your browser

Format
Quick targets:

Your compressed images appear here. Nothing is uploaded — everything runs on your device.

Quick answer

To compress a PNG to 20 KB, upload your file above and FitToKB binary-searches the encoder quality to land at or just under 20 KB — never over. It runs entirely in your browser, free, with no signup and no upload.

20 KB is typically enough for a small profile photo, exam thumbnail or signature scan. FitToKB guarantees the result never exceeds 20 KB, so your upload form will accept it.

Note on PNG: PNG is lossless, so the browser ignores quality settings — tiny targets like 20 KB usually can’t be reached as a true PNG. For photos, FitToKB converts to WebP or JPG (which compress) to hit 20 KB; for graphics it resizes instead. You always get a file at or under 20 KB.

Nearby targets

TargetGood forGo
10 KBa small profile photo, exam thumbnail or signature scanCompress to 10 KB
20 KBa small profile photo, exam thumbnail or signature scanThis page
30 KBa passport-style photo or a compact web imageCompress to 30 KB
← 10 KB 30 KB →

Frequently asked questions

How do I compress a PNG to 20 KB?
Upload your file to the tool above, keep the target at 20 KB, and download. FitToKB automatically finds the highest quality that stays at or below 20 KB.
Will the file go over 20 KB?
No. The engine only returns a result at or below 20 KB. If 20 KB is very small for the image, it lowers quality and, where allowed, resolution, and tells you if the target can’t be reached.
Does compressing to 20 KB reduce quality?
Some quality is traded for size, but FitToKB always uses the highest quality that fits 20 KB, so the loss is the minimum required to meet your target.
Can a PNG really be 20 KB?
PNG is lossless, so small targets like 20 KB often aren’t reachable as PNG. For photos, FitToKB automatically switches to WebP or JPG (which support real compression) to hit 20 KB while keeping it sharp.
Is my PNG image uploaded to a server?
No. Everything runs in your browser. Your file never leaves your device and nothing is stored.

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Free forever. No signup, no watermark, no upload. Everything runs on your device.

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