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GivenTool

Compress an image to under 50 KB

Get a photo or signature scan under 50 KB for strict application portals.

Drop a file here or click to browse

Accepts JPG, JPEG, PNG, WEBP, HEIC, HEIF, GIF, BMP, AVIF. Up to 50.0 MB per file.

50 KB is one of the strictest limits you will meet online. It is common on exam registration portals and public-sector forms, often with separate rules such as "photo between 20 KB and 50 KB" or "signature under 20 KB". A phone photo is a hundred times larger than that, so quality alone rarely gets there: the picture must also be shrunk to a few hundred pixels wide.

This tool does both automatically. It first finds the best quality that fits at the current dimensions, and if 40% quality is still too big it reduces the pixel size in 10% steps until the file is under 50 KB. For a passport-style photo this typically ends around 400 to 600 px, which is exactly what those portals expect. If the form also specifies pixel dimensions, use the image resizer first, then compress.

How to use it

  1. Drop the photo on the upload area or click to browse. JPG, PNG, WebP, HEIC and GIF are accepted.
  2. The target is already set to 50 KB. Adjust it only if your form quotes a different number.
  3. Keep JPG as the output unless the destination explicitly accepts WebP.
  4. Click Compress and wait a second or two; the result card shows the exact output size.
  5. Click Download. The compressed file is saved next to your original, which is not changed.

Frequently asked questions

The form wants 20-50 KB. What if the result is too small?

The tool aims just under the target, so a 50 KB target usually produces 45-50 KB. If you get a result far below the minimum, your image was already tiny; in that case set a slightly higher quality by using the general image compressor in quality mode.

How do I get a signature under 20 KB?

Type 20 in the target box. Scanned signatures compress very well because they are mostly white, so the tool usually keeps the full resolution.

Does the result stay under the limit exactly?

Yes. The output is always at or below the number shown, measured in kilobytes of 1024 bytes, which is also how Windows, macOS and most upload forms measure files. The final size is displayed before you download.

Will my photo look bad?

Quality is only reduced as far as needed. The tool starts from 95% quality and searches downwards; dimensions are only reduced if quality alone cannot reach the target. Photos for forms are usually viewed small, so even aggressive targets look fine on screen.

Is the image uploaded to a server?

No. Decoding and encoding happen in a Web Worker inside your browser. The site never receives the file.

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