Free Online Image Compressor Tool
Large image files are the number one cause of slow websites. Our free image compressor reduces file size by 40-80% while maintaining visual quality. Choose JPEG or WebP output format and fine-tune quality with a simple slider. The percentage reduction is displayed instantly so you know exactly how much space you saved. Entirely browser-based — your images never leave your device.
How Compression Works
JPEG and WebP compression discard information the human eye cannot perceive. Quality 80-85 typically reduces file size 50-70% with no perceptible loss. WebP often achieves 25-35% smaller files than JPEG at equivalent quality. Below quality 60, compression artifacts become visible. The tool displays exact before/after sizes and the percentage reduction so you can find the right balance.
Why Image Compression Matters
Google uses page speed as a ranking factor. Images account for about 50% of average page weight. Compressing images is one of the highest-impact performance optimizations. For e-commerce, page speed directly affects conversion rate. Our tool shows you the original dimensions, file size, and exact savings so you can make informed decisions.
Frequently Asked Questions
How much can I compress without losing quality?
For JPEG, quality 80-85 is the sweet spot. For WebP, 75-80 delivers excellent results. Below 60, artifacts appear. Above 90, savings are minimal.
Should I choose JPEG or WebP?
WebP produces smaller files at the same visual quality and is supported by all modern browsers. Choose JPEG for maximum compatibility with older systems and email clients.
Does compression affect dimensions?
No. Pixel dimensions stay the same — only the file size changes. Use our Image Resizer to reduce dimensions.
What does the percentage reduction mean?
It shows how much smaller the compressed file is compared to the original. For example, "Reduced by 65%" means the output is 65% smaller than the input.