Image Compressor
Compress images quickly with our free image compressor and image compressor online tool. Easily compress image, compress image online, and reduce file size while maintaining excellent quality. Our image compression tool lets you compress photo online, compress images online free, and reduce image size without complicated software. Use the photo compressor or image size reducer to optimize JPG, PNG, and other common image files for websites, social media, email, and storage. Wondering how to compress an image, how to reduce image file size, or how to compress an image without losing quality? Upload your image and let our online image compressor handle the optimization in seconds.
How to use the Image Compressor
- Choose an image.
- Set quality and format, then Compress.
Image Compressor features and limits
- Reports before and after size
- Limitation: transparency is lost in JPEG, and the result can occasionally be larger.
How the Image Compressor works
The image is drawn onto a canvas and exported at the chosen quality, entirely on your device.
Privacy and browser processing
Your input is processed locally in this page and is not uploaded or stored by Best Web Tools. Your hosting provider may still keep ordinary server logs for page requests.
Frequently asked questions
Is the file uploaded?
No. It never leaves your browser.
How do I compress an image to 100 KB?
Lower the quality value in steps, for example 70 and then 50, and check the result size shown after each run. WebP often reaches a smaller size than JPEG at similar quality. A very large photo may also need to be shrunk first with the Image Resizer.
Does compressing an image reduce quality?
Yes. This tool uses lossy JPEG or WebP encoding, so lower settings save more space but add visible artifacts. A moderate setting often looks close to the original, but compare the result before you use it.
Can I compress a PNG?
You can open a PNG, but the result is saved as JPEG or WebP. JPEG fills transparent areas with white, while WebP can keep transparency in browsers that support it.
Related tools
Browse all Image Tools or return to the Best Web Tools homepage.
Why use the Image Compressor?
Smaller images load faster. Lower quality saves more space but adds visible artifacts, so compare the result.