Compress JPG, PNG, WebP and AVIF images with batch processing and quality adjustment
Drag and drop images here or
Supports JPG, PNG, WebP, AVIF (max 10MB)
JPEG can't store transparency — transparent images save as WebP instead.
Unoptimized images noticeably slow down a website, and slow sites drive users away. Studies show that pages taking over 3 seconds to load cause 53% of mobile users to leave.
Mobile users often have limited data plans. Optimized images deliver a better experience and help users save data, especially on content-rich sites.
For site owners, compressed images significantly cut server bandwidth and storage costs — especially for high-traffic or image-heavy sites, where long-term savings add up.
Optimized images are smaller and load faster, noticeably improving overall site responsiveness and user experience.
Advanced compression algorithms shrink file size while keeping high visual quality, so users enjoy a crisp browsing experience.
Supports JPG, PNG, WebP, AVIF and other mainstream formats to meet various image optimization needs.
Adjust compression quality from 1-100% to find the best balance between image quality and file size.
Compress multiple images at once to boost productivity and easily optimize large sets of site assets.
All compression runs locally in your browser — nothing is uploaded, protecting data security and user privacy.
In modern web development, image optimization plays a key role and can significantly improve user experience. A free online image compressor like this one lets you reduce image file size in a few clicks, with no software to install:
Improve website performance: optimized images are smaller and load faster, noticeably improving overall site responsiveness and user experience.
Perfect for mobile devices: mobile users often have limited connections and data plans, and optimized images load faster and save data. Responsive image handling ensures the best visual experience on every screen size, regardless of device.
Server bandwidth and storage savings: optimized images benefit visitors and site owners alike. Compressed images reduce server load and hosting costs, especially for image-heavy sites, where long-term savings add up.
Balancing visual quality and file size: our compression uses smart analysis to shrink file size as much as possible while preserving high visual quality. In most cases the human eye cannot tell the original from the optimized image, yet file size drops significantly for the best quality-to-performance balance.
The advantages of modern formats: modern formats like WebP and AVIF offer excellent compression efficiency and quality. Compared with JPG and PNG, WebP delivers equal or better visual quality at 25-35% smaller file sizes, and AVIF compresses even further. Our tool supports multiple modern formats to help you pick the best option for your site.
Set quality to 70–85%. You'll get a much smaller file with a visual difference that is hard to notice, so it's ideal for websites, blogs and product photos.
WebP usually produces the smallest files at equal quality, often 25–35% smaller than JPG and PNG. Use JPG for photos and PNG for graphics that need transparency.
Yes. All compression runs locally on your device, so your images are never uploaded to a server.
It depends on the source, but 60–90% reductions are common for large photos and screenshots, especially when converting to WebP.
Images are usually the largest assets on a page. Smaller images load faster, improve Core Web Vitals and SEO rankings, and use less bandwidth.
Start at 70% quality, compress, then check the result size in the preview. Adjust the slider and re-compress until you hit your target. To reach a small target like 100KB, use a lower quality or convert to WebP or AVIF — just keep in mind that the smaller the target, the more visual quality you trade away.
Set quality to 70–85%. At those levels the file shrinks a lot while the difference is hard to notice. For PNGs with transparency, convert to WebP or AVIF to compress further without the white background a JPEG would add.
Yes. Images are usually the heaviest part of a page, so smaller files load faster and directly improve Largest Contentful Paint (LCP) — a Core Web Vitals metric Google uses for ranking. Compressing and converting to WebP or AVIF is one of the quickest ways to speed up your site.
For a step-by-step deep dive, read our guide: How to Compress Images Without Losing Quality.