Compress & convert images without leaving your browser
Drop in PNGs, JPEGs or WebPs, dial in the quality, and download smaller files in seconds. Everything runs locally — your images never touch a server.
How to compress an image
- Drag one or more images onto the drop zone, or click it to browse your files.
- Choose an output format — WebP for the smallest size, JPEG for photos, or PNG when you need lossless transparency.
- Move the quality slider until the size and appearance look right; the file size updates instantly.
- Optionally turn on “Resize to max width” to shrink large photos to a sensible dimension.
- Click Download on any result, or Download all to save every optimized image at once.
About this image compressor
This tool compresses and converts images entirely inside your web browser. When you add a file, it is decoded, redrawn onto a canvas, and re-encoded in the format you pick — all on your own device. Nothing is uploaded to a server, which means your photos stay private and the whole process finishes in a moment.
Choosing the right format is usually the biggest win. WebP typically produces files 25–35% smaller than JPEG at the same visual quality, and it supports transparency like PNG. JPEG remains a safe choice for photographs where compatibility matters, while PNG is best when you need pixel-perfect, lossless output such as logos or UI assets.
Compressing images before uploading them to a website, email, or game project reduces load times and storage. Smaller images improve page speed and Core Web Vitals, which is why optimizing them is one of the simplest ways to make a site feel faster.
Frequently asked questions
Are my images uploaded anywhere?
No. All compression happens locally in your browser. Your files never leave your device and are discarded when you close the page.
Which format should I choose?
Use WebP for the best size-to-quality ratio, JPEG for maximum compatibility with photos, and PNG when you need lossless quality or transparency.
Will compressing reduce image quality?
WebP and JPEG are lossy, so lowering the quality slider trades some detail for a smaller file. PNG is lossless — to shrink it, reduce the dimensions with the resize option.
Is there a file size or count limit?
There is no hard limit imposed by the tool. Because processing happens on your device, very large images depend on your available memory.
Does it work on mobile?
Yes. The tool is fully responsive and runs in modern mobile browsers, though very large batches are faster on a desktop.