Compress image to 20KB
Reach a strict 20KB limit with automatic quality tuning and careful resizing, all on your device.
Exact-size compressor
Files stay on this device
Advanced settingsResize, crop, quality
Dimensions never upscale. JPEG fills transparent pixels with white. GIF and animated WebP inputs become a static first frame.
Ready when you are. No image data is sent over the network.
On-device processing
No image upload endpoint exists.
Measured output
Success uses the real output bytes.
Batch ready
Process 20 files and download a ZIP.
Pick the limit your form asks for
Every page uses the same private compressor with the target already selected. You can still enter a custom value at any time.
20KB needs a careful tradeoff
Twenty kilobytes is a very small budget for a modern photo. The compressor first tests the highest useful image quality, then reduces dimensions only when the file still exceeds the limit.
Where this target helps
Small profile photos and application thumbnails
Closely cropped signatures and simple scanned marks
Legacy forms with very tight upload limits
Highest useful quality, without guesswork
Search quality first
JPEG and WebP outputs use a binary search to find the highest encoder quality that stays below 20KB.
Resize only when required
If quality alone cannot reach the limit, the engine reduces dimensions and searches again. It never upscales the source.
Show the honest result
Every download reports its measured bytes, dimensions, savings, and whether the requested maximum was reached.
Choose the right format
- JPEG
- Broadly accepted and efficient for photographs. Transparency becomes white.
- WebP
- Often smaller at similar quality and can preserve transparency.
- PNG
- Lossless and good for sharp graphics, but harder to fit under tiny limits.
Questions before you compress
Can a large phone photo really fit under 20KB?
Usually, but the pixel dimensions may need to be reduced. A 20KB result cannot retain the full detail of a multi-megapixel source.
Which output format works best at 20KB?
JPEG is the safest choice for photos. WebP can keep more detail at the same size when the destination accepts it.
Will a PNG stay transparent?
Choose PNG or WebP to preserve transparency. JPEG fills transparent areas with white.
Your images stay yours
The compressor has no image upload API. Analytics, when allowed, records only page and tool events without file names or contents.
Compress images