Compress Images for Web Performance
Images are usually the heaviest part of a web page, and oversized files drag down load time, Core Web Vitals, and search rankings. Getting most images under 100KB and sizing them to their display width makes pages feel instant. Compress before you upload so visitors are not waiting on megabytes of photos.
Open the compressorWeb image targets
| Image type | Target | Notes |
|---|---|---|
| Thumbnails and icons | Under 50KB | Small display size means you can compress hard without visible loss. |
| In-content photos | Under 100KB | The sweet spot for body images on most pages. |
| Hero / full-width | 100KB to 300KB | Larger by nature. Size to the layout width and compress firmly. |
| Display width | Match the container | A 2000px photo in an 800px slot wastes bandwidth. Resize down first. |
How it works
Add your image
Drop in a JPG, PNG, or WebP. Compression runs in your browser, so files are never uploaded.
Resize to the display width
Match the image to the width it actually shows at. Serving a huge photo into a small slot wastes load time.
Compress to target
Aim under 100KB for body images. The tool finds the highest quality that fits your target.
Download and deploy
Save the optimized image and upload it to your site or CMS.
Free tools for this
Everything runs in your browser, so your image never leaves your device.
Tips that make a difference
Right-size before you compress
Compression and resizing work together. A correctly sized image needs far less compression to hit a small file size.
Watch your largest image
The biggest image above the fold usually drives your Largest Contentful Paint. Compress that one first.
Prefer WebP where you can
WebP typically saves 25% to 35% over JPG at the same quality, which helps every page load.
Frequently Asked Questions
How small should web images be?
Aim for under 100KB for most in-content images and under 50KB for thumbnails. Hero images can run higher, but resize them to their display width first.
Do image sizes affect SEO?
Yes. Page speed and Core Web Vitals are ranking signals, and heavy images are a common cause of slow loads. Compressing them helps both speed and rankings.
Are my images uploaded to compress them?
No. Everything runs in your browser, so your images and any unpublished assets stay private.
Compress Images for Web Performance
Free, unlimited, and private. Nothing gets uploaded.
Open the compressor