Optimization / Web
Compress JPG images to under 300KB — ideal for web forms, application portals, and medium-quality web images.
Drop JPG file here
or click to select — multiple files supported
Copy the snippet below to embed this tool in your article, documentation, or newsletter. It runs 100% in the browser — your readers’ files never leave their device.
<iframe
src="https://www.i2pic.com/compress-jpg-to-300kb?embed=1"
width="100%"
height="640"
style="border:1px solid #d9caa8; border-radius:8px"
loading="lazy"
title="Compress JPG to 300KB — free online image tool">
</iframe>AA 300KB target sits between the tight 200KB form-upload limit and the roomier 400KB content-image standard. Many online application forms, scholarship portals, and membership systems set 300KB as their image upload maximum — enough for a recognizable photo, small enough for affordable storage. This tool uses a binary search to find the highest JPEG quality that fits under 300KB.
At 300KB, a JPG retains enough detail for clear document scans, portrait photos, and product thumbnails. The quality is a step down from 400KB but a clear step up from 200KB, making it a practical target when a platform gives you more room than a strict form limit but less than a full content-image budget. The binary search ensures you never lose more quality than the target requires.
This tool runs entirely in your browser. The Canvas API decodes and re-encodes your image locally — no upload, no server processing, no signup. The binary search converges in under a second, and for files already under 300KB, no compression is applied.
Common scenarios where a 300KB limit appears: online job applications asking for a scanned ID or passport photo, scholarship and grant portals, membership and certification systems, and some real estate platforms that cap listing photos at 300KB. Having a tool that targets this exact threshold saves you from repeated compression attempts.
Compress
JPG
Same format
.jpg,.jpeg
Browser · DOM
Free
The target size. Each tool in the cluster targets a specific file size limit. The 300KB tool finds the best quality that fits under 300KB — better than 200KB, slightly less than 400KB. Pick the tool that matches your platform's limit.
No compression is applied — the tool returns the image at high quality (92%) without unnecessary re-encoding.
It tries quality settings from high to low, halving the range each iteration. The final result is always at or below 300KB, and it is the highest quality that fits — so you never sacrifice more detail than necessary.
Yes — completely free, no signup, no watermark. All processing happens locally in your browser, so your images never leave your device.
Yes. Drop multiple JPG files and each is compressed independently to under 300KB. Download results individually or as a ZIP.
This tool runs 100% in your browser using WebAssembly. Your files are never uploaded to a server, stored in the cloud, or shared with third parties. No signup required, no watermarks, no tracking. Just fast, private, and free image conversion.