Squoosh

Squoosh is a free image compression app from the Chrome team at Google. It makes images smaller, often by more than half, so websites and shops load faster, while keeping them looking the same. It runs in your web browser at squoosh.app, and the compression happens on your own computer: your images aren't sent to a server.

What it can do

• Compare before and after. A slider splits the image in two, the original on one side and the compressed version on the other, so you can see exactly what changes as you adjust the quality.
• Modern formats. Save as WEBP and AVIF, the light formats websites load fastest, as well as JPG (MozJPEG), PNG (OxiPNG) and JPEG XL.
• Resize as you go. Shrink images to the size you need, which often saves more space than compression alone.
• Reduce colours. Cut down the number of colours in images like logos and illustrations to make them even smaller.
• Works offline. Install it as an app from your browser and it keeps working without internet.
• Private by design. The compression runs in your browser, so the image itself never leaves your computer.

Where you'll meet it

Squoosh's compressors are some of the best available, and they're reused well beyond the app. jSquash packages them for developers, so web apps can compress images in the browser too. That's how you can build your own image tools with an AI coding assistant, such as a background remover that saves web-ready images without uploading them.

Squoosh, TinyPNG or Photoshop?

All three make images smaller. They differ in privacy, control and cost.

SquooshThis page

Best forFine control over one image at a time

Compare quality side by side and pick from the best modern formats, all in your browser with no upload. One image at a time.

How you use it

In your web browser, or installed as an app

Open source

Yes (Apache 2.0)

Cost

Free

TTinyPNG

Best forQuick batches with no settings

Drop up to 20 images and get smaller files back, with no settings to think about. Images are uploaded to its servers, and bigger files and batches need a paid plan.

How you use it

A website, plugins and an API

Open source

No

Cost

Free with limits; paid plans

Photoshop

Best forExporting while you design

Export As saves smaller JPG, PNG and WEBP files as part of your design work, but with less control over modern formats like AVIF. Needs a subscription.

How you use it

A desktop app

Open source

No

Cost

Monthly subscription

A quick way to choose: a quick batch with no settings? TinyPNG. Already exporting from your design file? Photoshop's Export As is fine. Want the smallest file at the quality you choose, without uploading anything? Use Squoosh.

How to get it

• Easiest: open squoosh.app in your browser and drop in an image.
• As an app: in Chrome or Edge, use "Install app" from the address bar, and it works offline.
• For your own app: use jSquash, which packages Squoosh's compressors for web pages. Ask your AI coding assistant to "compress images to WEBP in the browser with jSquash".
• Run your own copy: clone the project from GitHub and follow the steps in its README.

Good to know

• It works on one image at a time. For many photos at once, use jSquash in your own tool, or a batch app.
• The squoosh.app website uses Google Analytics to count visits and image sizes before and after. Your images themselves aren't sent anywhere.
• AVIF gives the smallest files but takes longer to save, especially for big images. WEBP is much quicker and works everywhere.
• The old command-line version, Squoosh CLI, is no longer maintained, so use the web app or jSquash.
• Licence: Apache 2.0. Free to use, change and include in products you sell, as long as you keep the licence notice.