What this tool does
Reduce an image toward 20KB in your browser. Image PDF Tools tests local settings and shows the closest usable result.
Practical guidance
A 20KB ceiling is extremely restrictive for detailed photos. Crop empty space first, then reduce dimensions before forcing very low quality; this usually produces a more readable result than quality reduction alone.
Three simple steps
- Add an image from your device.
- Let the browser search for a result near 20KB.
- Review the quality and download the closest result.
Private by design
Your images are processed in this browser. They are not sent to our server.
Browser processing limits
A target size is a best effort. Complex images may need lower quality or smaller dimensions.
Frequently asked questions
Will every image reach exactly 20KB?
No. Detailed images may require very small dimensions or visibly lower quality, so the tool reports the closest result.
How can I make the file smaller?
Lower the quality, reduce the dimensions, or choose WebP or AVIF when compatibility allows.
Concrete input and output example
Input a 900×900 profile photo at 310KB; crop empty background, resize to about 320×320, and export below 20KB. Inspect eyes and text because the hard ceiling may require visible loss.
Browser compatibility notes
Reviewed against the implementation and required web APIs on 2026-08-12. Use a current browser where these APIs are available and verify important output on your device.
- Chrome / Edge (current desktop)
- Requires local decode, canvas, encoding, Blob download, and enough memory; verify the downloaded image.
- Firefox (current desktop)
- Uses the same standard local APIs; color rendering can differ slightly from Chromium.
- Safari (current desktop)
- Uses canvas and Blob downloads; available memory and codec behavior remain WebKit-controlled.
A tool-specific question
Is exactly 20KB guaranteed?
The search aims at or below the target, but a readable result may be impossible for complex large images. Leave margin for sites that count KB differently.