Compress an image under 100KB or to an exact size
Use our website image compressor to reduce JPG, PNG, WebP and AVIF files to a precise size while preserving the best possible visual quality.
Website image compressor with an exact-size target
This free tool is designed for anyone who needs to compress an image under 100KB or compress an image to an exact size without repeatedly adjusting a quality slider. Enter your maximum file size, select WebP or AVIF, and the compressor searches for the strongest visual quality that stays below your limit.
Smaller images can reduce page weight, improve loading speed and make featured images easier to upload to websites, forms and content management systems. Processing happens locally in your browser, so the original image is not uploaded to SE Rank Pro.
How to compress an image to a specific size
- Upload a JPG, PNG, WebP or AVIF image.
- Choose WebP or AVIF as the output format.
- Enter 100KB or any custom file-size target.
- Select “Compress image to exact size.”
- Review the dimensions and savings, then download the result.
Optimized for website speed
For difficult size limits, the website image optimization tool first adjusts encoding quality. It reduces image dimensions only when compression alone cannot reach the chosen target. This approach protects visible detail while producing a practical asset for blogs, landing pages, ecommerce products and featured images.
Image compression questions
Can I make an image exactly 100KB?
The tool produces the closest high-quality result that does not exceed 100KB. Image encoders cannot consistently create a file containing one exact number of bytes.
Does compression affect image quality?
Every lossy format involves a trade-off, but the tool automatically searches for the highest quality available below your target and resizes only when necessary.
Which format should I choose?
WebP offers excellent compatibility and speed. AVIF often produces a smaller file at comparable visual quality.