Image Compressor
Compress JPG, PNG and WebP images in your browser with adjustable quality. Nothing is uploaded, so your files never leave your device.
Upload an image
Compressed image
Upload an image to compress it.
How to use the image compressor
Click the upload box or drag an image onto it. Choose an output format: JPEG for photos, WebP for the smallest files or PNG for lossless quality. Move the quality slider to balance file size against visual quality. The result updates right away with a size comparison and a download button. Everything runs in your browser, so your files never leave your device.
Why image size matters
Image weight is often the biggest factor in page speed for content-heavy sites. Photos straight from a phone are usually several megabytes each. Compressed to a few hundred kilobytes, they look the same to most people but load much faster on slow connections. That helps Core Web Vitals, lowers bounce rate and supports your SEO.
Common uses
- Compressing blog header images before uploading them to WordPress
- Preparing product photos for an online store
- Shrinking screenshots for documentation
- Getting email attachments under size limits
- Making pages faster for visitors on slow mobile connections
When to use JPEG, PNG or WebP
Use JPEG for photos, gradients and anything with continuous tone. Use PNG for logos, screenshots and images with sharp edges or transparency. WebP usually produces smaller files than both at similar quality and is supported by all modern browsers, so it is a good default if your CMS and CDN support it.
Frequently asked questions
What is the right quality setting?
For most web photos, 70 to 85 gives a large size reduction with no visible difference. Above 90 the file grows quickly for little gain. Below 70 you may start to see artifacts in flat areas of colour.
Does the tool upload my image anywhere?
No. It uses your browser's Canvas API, so the image stays on your device. It is safe for confidential photos and internal screenshots.
Why is my PNG bigger than the JPEG?
PNG is lossless and keeps every pixel exactly. JPEG discards detail the eye barely notices. For photos, JPEG is almost always smaller. For text, logos and screenshots, PNG often looks better because JPEG blurs sharp edges.
Why did the file get bigger?
If the original was already well compressed, re-encoding at high quality can add size. Lower the quality, or switch to WebP.