Compress image to 300 KB
Get any photo under 300 KB without guessing quality settings. Drop it in, and the tool finds the best version that fits, right on your device.
When you need 300 KB
- Portals and LMS uploads with a 300 KB cap
- Large blog hero images
- Detailed product photos
What to expect
Most photos keep around 2,000 px of width under 300 KB without visible artefacts.
Other sizes: 10 KB · 20 KB · 30 KB · 50 KB · 100 KB · 150 KB · 200 KB · 500 KB · 1 MB · 2 MB
Questions
How do I compress a photo to 300 KB?
Add the image above; the target is already set to 300 KB. The tool finds the highest JPEG quality that fits under 307200 bytes, shrinking the width only if needed, then you save the file.
Why is my image under 300 KB but smaller than expected?
The search steps in quality increments and always stays under the limit, so the result is usually a little below the target. That leaves margin for forms that count KB as 1,000 bytes.
My form also requires exact pixel dimensions. What do I do?
Enter the required width and height as max width and max height before adding the image. The tool resizes first and then fits the size target, which gives better quality than letting it shrink on its own.
Is my photo uploaded?
No. The compression runs in your browser with WebAssembly; the file stays on your device. That matters for ID photos and signatures.