How to use Image Compressor
- Click the box (or drag your pictures onto it) to add one or more images.
- Choose the quality. Around 70–80% is a good balance for photos. Lower numbers give smaller files and more visible loss of detail. You can also set a maximum width.
- Press Compress images. Each image shows its size before and after.
- Press Download next to an image, or Download all as ZIP to get everything at once.
About this tool
Large photos slow down websites, fill up email attachments and use up storage. Compressing an image lowers its file size so it loads and sends faster.
JPG and WebP are “lossy” formats: the quality slider trades a little detail for a smaller file, and usually the difference is hard to see around 70–80%. PNG is a “lossless” format, so the quality slider does not apply to it, and a re-saved PNG often shrinks only a little or not at all. For photos saved as PNG, choosing WebP or JPG is where big savings come from. Images with transparency keep it as PNG or WebP; if you choose JPG, transparent areas become white.
A download is only offered when the new file is actually smaller than your original, so you never end up with a bigger file by accident. Compression always works from your original, and the original file on your device is never changed. Metadata such as camera details and location is not copied into the new image.
Privacy: This tool runs in your browser. What you type or choose is not sent to a server by this website.
Common questions
Why did my PNG not get smaller?
PNG is already a lossless format and many PNG files are well optimised. To shrink a photo saved as PNG much more, switch the output format to WebP or JPG, or set a smaller maximum width.
Will compressing reduce image quality?
For JPG and WebP, yes, a little, and you control how much with the quality slider. Use a higher setting for images you will print or edit later.
Are my images uploaded?
No. Compression happens inside your browser and the images never leave your device.
Can I compress WebP in every browser?
Reading WebP works in all current browsers. Saving as WebP works in current Chrome, Edge and Firefox. If your browser cannot save WebP, the tool tells you and you can choose JPG instead.