Optimize PNG and compress images in your browser with Squoosh

Tool powered by Squoosh on Squoosh.

Compress and resize PNG, JPEG, WebP, or AVIF in Squoosh. Compare quality side by side before download—runs fully in your browser.

What is Squoosh?

Squoosh is the squoosh.app image optimizer: browser image compression with codecs and resize controls so you can optimize PNG, JPEG, WebP, or AVIF and compare output before download. Many searches describe the same task as lowering image resolution or file size for faster pages. This page links to the official app; behavior and limits follow the publisher site.

Features for image optimization with Squoosh

Browser image compression with side-by-side control—useful when you need to optimize PNG or ship lighter assets.

  • Side-by-side comparison

    Inspect quality differences before exporting optimized images.

  • Modern format conversion

    Convert images to formats such as WebP and AVIF for faster delivery.

  • Resize and quality controls

    Tune dimensions, compression quality, and codec settings to your target.

  • Runs locally

    Compression happens in your browser so image data stays on-device.

  • Instant file-size feedback

    See output size changes immediately while adjusting options.

  • Fast export workflow

    Download optimized output in a few clicks with no signup.

How to optimize images with Squoosh

Use this simple flow to compress and export faster-loading images.

  1. Import your image

    Drag and drop an image file or paste one into the Squoosh workspace.

  2. Adjust compression

    Pick a format and tune quality, resize, and related codec settings.

  3. Compare and export

    Review visual differences and file size, then download the optimized version.

Tips for better compression results

Get cleaner outputs and better performance with small adjustments.
  • 01

    Start with WebP or AVIF

    Modern formats usually provide smaller files than legacy JPG or PNG.

  • 02

    Resize before final export

    Export only the dimensions you need for your layout.

  • 03

    Check edges and gradients

    Inspect fine details after compression to avoid visible artifacts.

Great for designers and developers

Squoosh fits many day-to-day optimization tasks.

  • Frontend developers

    Prepare lighter assets to improve page speed and Core Web Vitals.

  • UI designers

    Export previews and product images with controlled quality.

  • Content teams

    Shrink blog and marketing images before publishing.

  • No-code builders

    Optimize media before uploading to CMS or website builders.

Why use Squoosh for image compression?

A practical workflow for web-ready image files.

  • Smaller payloads

    Reduce image size to speed up page loading.

  • Visual control

    Compare output quality directly before downloading.

  • No account needed

    Open the app and start optimizing immediately.

  • Privacy-friendly flow

    Processing stays in-browser for local image handling.

Frequently Asked Questions

Quick answers about this tool—open a question to read more.