Compress an Image to 300KB Online (Free)
With a 300KB budget your photo keeps nearly all its quality — this is the gentlest of the 'compressed' targets. It suits scanned documents, blog images, support tickets and any platform capping uploads around 300KB, and our browser-based tool reaches it in seconds.
Try the free tool now
100% in your browser — no upload, no account, no watermark.
Open Compress Image to 300KB Online300KB: quality with headroom
At 300KB a 1600px JPG at 75-80% quality looks identical to the original on any screen. That headroom makes 300KB the right target when you want a small file without obvious compression artefacts.
How to compress to 300KB
- Open the Compress Image tool.
- Drop your image.
- Set quality to 75% and read the size.
- Rarely needed, but you can then set a 1400px width cap.
- Download.
Unlike the 50KB or 100KB goals, you typically do not need aggressive settings — a single quality pass usually takes a multi-megabyte photo straight under 300KB.
Perfect for documents and tickets
Support systems, document portals and email attachments all accept 300KB comfortably. The result stays crisp for zooming, while your message sends in a blink.
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Frequently Asked Questions
Will 300KB be enough for a full-page scan?
Yes for viewing and small prints. Keep the original scan if a high-DPI print is ever required, and use the 300KB copy for uploads.
What quality reaches 300KB fastest?
75% quality at original resolution brings most photos under 300KB immediately; complex or very high-resolution shots may need 70%.
Is 300KB fine for a website hero image?
Absolutely. Keeping hero and gallery images around 300KB aids SEO and Core Web Vitals by loading fast on mobile connections.