Compress Images Online
Compress JPG and PNG images at light speed with Browser based Image compressor. Private, Works Offline, No Limits, Low carbon footprint.
Unlimited images, No File Size Limits.
Why use CompressImage.io to compress images?
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No Limits
As the compression is happening in the Browser, there are no limits on how many images you can convert or what size of image you can convert. -
100% Private
Since no images are sent to any servers, your images are totally safe and private as no one else can see your images.
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Low Carbon Footprint
Since no servers are involved in the compression process, zero extra electricity is used, hence no carbon emitted.
How to Compress Images
- 1
Add your images
Drag and drop your images onto the tool, or click "Select Files" to choose them. There are no file size limits and you can add as many images as you like.
- 2
Images compress instantly
Compression runs directly in your browser the moment files are added. Your images are never uploaded to a server, so it is fast and completely private.
- 3
Download your files
Download each compressed image individually, or grab them all at once as a single ZIP. Adjust quality, resize, or convert to WebP in Settings if you need to.
What is Image Compression?
Can you tell the difference? Image compression is a term used to describe the process of reducing the amount of space an image takes up. Once you have compressed an image with an image compressor, you can store it more efficiently, which means you can store more than one image on the same amount of storage space. Compressed images can be sent faster, take up less room, or be sent less frequently, as the bandwidth required to send them is smaller.There are two main types of image compression: lossless and lossy.
Although lossy image quality is not as great as lossless compression, the quality difference is almost unnoticeable to human eyes. Lossy image compression gives you almost the same quality as lossless but reduces the image size by up to 90%.
How Does CompressImage.io Compresses Images?
CompressImage.io allows you to compress JPG images as well as compress PNG images with lossy compression techniques right in your browser. None of your images are sent to any servers for compression. This makes the image compression process ten times faster than other image compress websites like tinypng and compressor.io
Need more than the basics? Use the image optimizer to resize and convert images for the web, the bulk image compressor to process a whole folder at once, or convert images to WebP for the smallest modern-format files.
For jpg compression, it uses the compressorJs library which is an open source jpeg image compression engine written by Fengyuan Chen. For compressing png images, CompressImage.io uses the opensource javascript png compression script UPNG.js written by Ivan Kutskir.
What Makes CompressImage.io the Best Image Compressor?
CompressImage.io is the fastest of the most popular image compressors online. Let's Compare it's performance with other popular services
| Features | CompressImage.io | TinyJPG/TinyPNG | Compressor.io |
|---|---|---|---|
| Limits | No Limits | 20 images/5mb max | 10mb max |
| Compression Speed | Very Fast | Slow | Slow |
| Auto Resize Image | ✔ | ✖ | ✖ |
| WebP Conversion | ✔ | ✖ | ✖ |
| Private Compression | ✔ | ✖ | ✖ |
| Works Offline | ✔ | ✖ | ✖ |
| Zero Carbon Emission | ✔ | ✖ | ✖ |
Frequently Asked Questions
Are my images uploaded to a server?
No. CompressImage.io compresses every image directly inside your browser using JavaScript and WebAssembly. Your images never leave your device, which makes the tool completely private and able to work offline.
Is there a file size or quantity limit?
There are no limits. Because compression happens on your own device rather than a server, you can compress as many images as you want and there is no maximum file size.
Which image formats can I compress?
You can compress JPEG and PNG images, and optionally convert them to WebP for even smaller file sizes. Dedicated tools for GIF, SVG and other formats are also available.
Does compressing an image reduce its quality?
CompressImage.io uses smart lossy compression that reduces file size by up to 90% while keeping the difference almost invisible to the human eye. You can also raise the quality slider for near-lossless results.
Is CompressImage.io free to use?
Yes, it is completely free with no sign-up, no watermarks and no limits. Compression runs on your own device, so there are no server costs to pass on.
Can I use it offline?
Yes. After your first visit the app is cached on your device, so you can install it as an app and compress images even without an internet connection.
What is WebP and should I use it?
WebP is a modern image format that produces smaller files than JPEG or PNG at the same quality. Enable "Convert to WebP" in Settings if your website or app supports it (most modern browsers do).