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How to use the Image Compressor
- 1Drop your images or click to choose them (JPG, PNG and WebP are supported).
- 2Adjust the quality slider; 75–85% gives the best balance of size and quality.
- 3Optionally set a maximum width to shrink large photos even more.
- 4Download each compressed image or all of them at once.
How to get an image under 20 KB
Drop your photo above: the compressor tries quality levels from high to low and keeps the best-looking version that is under 20 KB. If even low quality is too large, it also reduces the width and height step by step until the file fits.
We aim for under 20000 bytes, so the file passes forms that count 1 KB as 1,000 bytes as well as those that use 1,024. Everything runs in your browser; your photo is never uploaded.
Where 20 KB limits are common
- Signature uploads on exam and job application forms; many Indian government recruitment portals (for example SSC) ask for a signature of 10–20 KB.
- Small profile pictures and thumbnails on older websites and school portals.
What size is a 20 KB photo?
As a rough guide, a typical photo saved as JPG at good quality is about 410 × 410 pixels at 20 KB (or about 470 × 360 for a 4:3 photo). Simple pictures with plain backgrounds can be larger; busy, detailed photos come out smaller.
Tips for the best result
- Crop away empty space first so the pixels are spent on what matters.
- Use JPG for photos: PNG files can't be squeezed to a target size and are usually much larger.
- For signatures, sign in dark ink on plain white paper and crop tightly around the signature before compressing.
- Plain, evenly lit backgrounds compress far better than busy ones.
- Check the form's other rules too: many ask for specific pixel dimensions or a minimum size as well as a maximum.
Compress to a specific size
Frequently asked questions
Will my photo look blurry at 20 KB?
At 20 KB some detail is lost, but a face or signature stays clear at the sizes forms display. Cropping tightly first gives the sharpest result.
Is 1 KB 1,000 or 1,024 bytes?
Both are used. To be safe we keep your file under 20000 bytes, which satisfies either definition.
Why can't my image get under 20 KB?
Very large or very detailed images may need resizing first. The tool shrinks dimensions automatically, but if a form requires exact pixel dimensions, use the resize tool with those dimensions and a target size.