Compress to Exact Size
Hit an exact file size target — automatic quality tuning in your browser
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.JPG · .JPEG · .PNG · .WEBP — Max file size: 20MB
Frequently Asked Questions
What exactly does 'compress to a target size' do?
It automatically searches for the highest quality that still puts your file under the target (50KB, 100KB, 200KB...). You don't touch a slider — the tool finds the sweet spot for you.
What if the image can't reach the target size?
The tool tries the lowest quality first. If even that is bigger than the target, you get the smallest possible version and a clear warning — then try WebP format or a bigger target.
JPG or WebP — which should I pick?
WebP is typically 25-35% smaller at the same quality and keeps transparency, so it reaches the target size more often. JPG is the safest for maximum compatibility.
Is this the same as the quality slider compressor?
No. The regular compressor gives you manual control. This one is fully automatic: pick a size limit (email, form, CMS, avatar...) and let it tune quality by itself.
How this tool works
Forms, email systems and websites love precise limits — 100KB here, 500KB there, 1MB for avatars. 'Compress to exact size' is the tool that lands right under those limits automatically, without you touching a single slider.
- Pick the target file size (or type a custom one) and the output format. The engine then runs a binary search on quality: it encodes the image at different quality levels until it finds the highest one that stays under your limit.
- Because the whole process happens on your device, your photo never leaves your browser. Original dimensions are preserved — we only tune the compression, not the resolution.
Why exact-size compression is valuable
Rejected uploads are a top reason people abandon forms: a 102KB file fails a 100KB check and the whole visit is lost. Landing just under the limit means the first attempt always works.
Targeted compression also saves bandwidth at scale — a 200KB image instead of a 2MB one loads 10x faster on mobile networks, where most of the world now browses.
Pro tip: If you must respect the limit even after a warning, switch the output to WebP — it's typically 25-35% smaller than JPEG at the same quality.