PNG Optimizer

PNG Optimizer

Optimize PNG images and reduce the file size right in your browser!

PNG Optimizer promo image
What is PNG Optimizer?

PNG Optimizer is a browser add-on that helps you optimize PNG images and reduce their file size right in your browser. Simply drag & drop PNG files to the app UI and wait for the optimization process to finish. Choose your desired optimization engine and download the optimized image.

Stats date:
By: Loori
Users: 62 ▼ -1
Rating: 4.75 (4)
Version: 0.1.1 (Last updated: 2019-08-15)
Creation date: 2018-07-15
Weekly download count: 3
Firefox on Android: Yes
Manifest version: 2
  • storage
Size: 1.26M
Email: Click to see
URLs: Website
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

PNG Optimizer is a browser add-on that help you optimize PNG images. It also reduces the file size depending on the optimization level.

Simply drag & drop PNG file(s) to a designated area in the app UI and then wait for few seconds for the optimization process to finish up. You can choose your desired optimization engine from the drop-down list as well. The first and last engines can optimize both PNG and JPEG files, but other engines are designed for PNG files only.

All the info about the optimization process is being displayed in the console area within the app UI. Once the optimization process is done, please click on the download button to download the optimized image. Please note that download location is the default location in your browser.

Note (v0.1.1+): PNG Optimizer add-on uses 5 different open-source optimization engines: optipng.js, pngcrush.js, pngquant.js, compressor.js and browser-image-compression.js. Optimizer engines have different performance and result. Please use the one that best matches your need.

  1. optipng.js:
  2. pngcrush.js:
  3. pngquant.js:
  4. compressor.js:
  5. browser-image-compression.js:

Note: because this is an ongoing project, you might see some bugs in optimizing image files. If you found a bug to report, or have a feature request, please fill the bug report form in the add-on's homepage.

User reviews
very fast results
by tamo, 2022-08-21
View all user reviews
Risk impact

PNG Optimizer is safe to use. It does not request any sensitive permissions.

Risk likelihood

PNG Optimizer has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details