Moderate quality reduction
Lowering JPEG or WebP quality to 65-75% usually gets most photos under 300KB while keeping them looking sharp on screens.
Target file size
Compress Image to 300KB
Many job portals, application systems and document uploads require images under 300KBLessMB helps you reach that target locally in your browser
compress image to 300kbreduce image to 300kbimage compressor 300kbcompress photo to 300kb
Select an image, lower quality or dimensions, and check the output size below.
Drop your file here, or
Compress JPG, PNG, GIF, WebP, AVIF, JXL, and SVG images in your browser.
Files stay on your device
JPG · PNG · WebP · GIF · AVIF · SVG
No upload required100% free foreverWorks in your browser
Steps
Quick workflow
Use this simple browser workflow to get a smaller file while keeping the original on your device
- Select your image file.
- Choose JPEG or WebP output format.
- Lower quality to 65-75%.
- Reduce dimensions if still over 300KB.
- Download and verify the final file size.
What to know before you start
Resize if needed
If quality adjustment alone is not enough, reduce width to 1200-1600px. This is plenty for web, forms and document use.
Try WebP output
WebP produces 25-35% smaller files than JPEG at the same visual quality, making it easier to hit the 300KB target.
FAQ
Compress Image to 300KB FAQ
Short answers for the most common questions about this workflow and LessMB's local browser compression
No uploadFree toolBrowser-based
Can I compress an image to exactly 300KB?
Exact size depends on content and dimensions. Adjust settings iteratively; LessMB shows the output size before download.
Will the image look bad at 300KB?
For most photos at 1200-1600px wide, 300KB output looks perfectly clear for web and document use.
Are files uploaded?
No. LessMB processes images locally in your browser session.