Image compressor
Drag in your images and shrink their size in seconds, with the option to convert to WebP, JPEG or PNG. Runs 100% in your browser: your images never leave your device. Free, no sign up.
Quality applies to WebP and JPEG. PNG is lossless and ignores this value.
Everything happens in your browser. Your images never leave your device.
How to compress images without losing quality
An image compressor reduces the byte size of a photo or illustration while keeping the visual quality as close to the original as possible. Lighter images make a site faster, improve the browsing experience and help with SEO.
This tool is different: it runs 100% in your browser. Images are processed on your own device and are never uploaded to any server. Full privacy, nothing leaves your computer or phone.
Why image compression matters for SEO
Speed is a ranking factor. Heavy images are the number one cause of slow pages. By compressing, you improve Core Web Vitals, especially LCP (Largest Contentful Paint), which measures how long the largest visible element takes to load. Fast pages convert more and Google prefers them.
WebP, JPEG or PNG: which to choose
| Format | When to use |
|---|---|
| WebP | Best compression for the web. Good for photos and graphics, high quality with small files. |
| JPEG | Photos and images with many colors, when you need maximum compatibility. |
| PNG | Transparency, logos, icons, screenshots and images with text or sharp lines. |
Lossy and lossless
- Lossy: WebP and JPEG discard details the eye barely notices to produce much smaller files. You control this with the quality setting.
- Lossless: PNG keeps every pixel, ideal for transparency and sharp lines, but produces larger files. Quality does not apply to it.
How to pick the right quality
For web photos, values between 0.7 and 0.85 are usually the sweet spot: much smaller files with almost no visible difference. Compare the result, and if an image ends up larger than the original, keep the original.
Image compressor questions
Is the tool free?
Yes, free and no sign up. Drag in your images and download the compressed versions instantly.
Are my images uploaded to any server?
No. All processing happens in your browser, on your own device. No image is uploaded or stored on a server.
Which format should I choose?
For most sites, WebP delivers the best compression. Use JPEG for photos when you need maximum compatibility, and PNG when you need transparency or images with text and sharp lines.
What is quality?
It is how much detail the image keeps when compressed to WebP or JPEG. The lower the quality, the smaller the file and the greater the visual loss. PNG is lossless and ignores this value.
Can I convert to WebP?
Yes. Pick WebP as the output format and the image is converted and compressed in one step. You can also convert to JPEG or PNG.
Does it work on mobile?
Yes. Since it runs in the browser, it works on phones, tablets and computers, with nothing to install.
Tired of optimizing image after image?
Automarticles already delivers your blog articles with images optimized automatically, ready to rank on Google and be cited by AIs like ChatGPT. With no manual work.