Compress Image to 300 KB
Compress your JPG or PNG image to 300 KB or less. Free, browser-local, no upload needed.
Use the Image Compressor →Need to shrink an image down to 300 KB or smaller? Whether it’s for email attachments, website uploads, or app requirements, our free Image Compressor lets you adjust the quality slider until your file fits the target size — all in your browser, nothing leaves your device.
It’s completely free — no signup, no credit card, no hidden limits. All processing runs locally in your browser. Your files never leave your device.
Need unlimited access?
Try TinyToolbox Premium for advanced features, no limits, and priority support.
Use the Free ToolFrequently Asked Questions
Can I compress an image to exactly 300 KB?
Yes. Drag in your JPG or PNG, adjust the quality slider, and check the output size. You can fine-tune until it fits under 300 KB.
Is this free?
Yes. No signup, no uploads, no limits. Everything runs locally in your browser.
Tips for Using Image Compressor
For best results, start with a high-resolution source image. The tool processes everything locally in your browser — your files never leave your device. Most adjustments happen in real time, so you can experiment freely without waiting for server round trips.
Common use cases include preparing social media visuals, cleaning up product photos for online stores, creating consistent brand imagery across platforms, and preparing images for printing or sharing. Each tool gives you fine-grained control while keeping the interface simple.
Browser-local image processing is faster and more private than cloud-based alternatives. There are no file size limits (beyond what your browser can handle), no queue times, and zero risk of your images being stored on external servers or used for training data.
More Questions About Image Compressor
How is Image Compressor different from similar tools?
Image Compressor runs entirely in your browser — no data is sent to any server. It provides instant results without file size limits, registration, or hidden costs. Unlike many free online tools, it works offline after the first page load and respects your privacy completely.
Can I use Image Compressor on my phone or tablet?
Yes. TinyToolbox tools are fully responsive and work on smartphones, tablets, and desktop browsers. The interface adapts to your screen size, and touch interactions are supported throughout. Since everything runs locally, mobile performance is smooth even on slower connections.