Compress Image Online – Free & Private
Compress JPG, PNG and WebP images right in your browser. Smaller files, no upload, no quality surprises.
Drop your image here or click to upload
Large images are one of the most common reasons a website feels slow. Compressing them reduces file size dramatically, which speeds up page loads, saves bandwidth and improves the mobile experience.
Why compress images?
Uncompressed images waste storage and slow down every page they appear on. Search engines and visitors both reward fast sites, so image compression is one of the highest-impact, lowest-effort optimisations you can make.
- Faster websites: smaller images load sooner, especially on mobile.
- Lower bandwidth: less data transferred means lower costs and happier visitors.
- Easier sharing: smaller files are easier to email and upload.
How to compress an image
- Drop your image onto the page above, or click to upload it.
- Choose an output format — WebP usually gives the smallest files.
- Lower the quality slider until the file size suits your needs.
- Convert and download the compressed image.
Everything runs locally in your browser, so your images are never uploaded to a server.
Compression tips
Prefer WebP for the web
WebP typically produces files 25–35% smaller than JPG at similar quality, and it is supported by all modern browsers.
Match quality to purpose
Use higher quality for hero images and portfolio shots, and lower quality for thumbnails and backgrounds.
Resize before you compress
The biggest saving often comes from reducing dimensions. Use our resize tool to shrink images to the size you actually display.
Frequently asked questions
Is this image compressor free?
Yes. It is completely free, with no registration, no watermark and no limits.
Are my images uploaded?
No. Compression happens entirely in your browser; your files never leave your device.
How do I get the smallest file?
Choose WebP as the output format and lower the quality slider. WebP at around 75–80% is usually much smaller than the original.
Does compressing reduce quality?
Lossy formats like JPG and WebP reduce file size by discarding some data. At sensible settings the difference is hard to see.
Which formats can I compress?
You can load JPG, PNG, WebP, HEIC, GIF, BMP and AVIF, and output JPG, PNG or WebP.
Related guides
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