Image Compressor
Reduce image file sizes with a live quality slider. See the exact byte savings before you download anything.
Unoptimized images are one of the most common causes of poor Core Web Vitals scores and slow pageloads. A JPEG or WebP compressed to 75–85% quality is typically 40–70% smaller with no visible difference — making compression the highest-impact step in most website performance audits. Useful for web developers, bloggers, e-commerce stores, and content creators. Your image stays entirely on your device throughout.
Drag & drop an image or browse files
Supports JPEG · PNG · WebP
Three steps, done
Drop Your Image
Drag any JPEG, PNG or WebP file onto the drop zone or click to browse your files.
Adjust Quality
Drag the quality slider. The live size comparison updates as you move it so you can find the right balance.
Download
Hit Compress & Download. The smaller file saves directly to your device — nothing was sent anywhere.
Common uses
Web Performance
Reduce image payload to improve Core Web Vitals scores and Google PageSpeed ratings. Compressing images is usually the single biggest win in a site performance audit.
E-Commerce
Shrink product photos before uploading to your shop. Smaller images mean faster product pages, lower bounce rates, and better conversion.
Blogging & CMS
Prepare images before uploading to WordPress, Ghost, or any CMS with file size limits. Keep your media library lean without specialist software.
Email & Social
Reduce image file size before embedding in email templates or uploading to platforms with strict size limits, without losing visual quality.
Your images never leave your device
Compression runs entirely in your browser using the Canvas API. Your image is read into memory locally, re-encoded at the chosen quality, and returned as a downloadable file — all on your device. Nothing is uploaded, transmitted, or stored. Safe to use with confidential or proprietary images.
Works in every modern browser
The compressor uses the standard Canvas API, available in all modern browsers since 2015. No plugins or downloads required.
Common questions
Does image compression happen on a server?
No. Compression runs entirely in your browser using the Canvas API. Your image is never uploaded, transmitted, or stored anywhere outside your own device.
Which image formats can be compressed?
JPEG and WebP — the two lossy formats that benefit most from quality reduction. PNG uses lossless compression and doesn't gain meaningfully from a quality slider.
What quality setting should I use for web images?
75–85% is the sweet spot for most web use cases. It delivers significant file size savings — typically 40–70% smaller — while keeping the image visually sharp to the human eye.
Is there a file size or resolution limit?
There is no server-side limit. Very large files are processed entirely on your device, so performance depends on your hardware — most modern computers handle large images instantly.