PNG Optimizer

Optimize PNG images and reduce the file size right in your browser!
What is PNG Optimizer?
"PNG Optimizer" is a useful browser extension designed to optimize the size of PNG images. The tool uses five different open-source optimization engines and lets users select the one that fits their needs. By shortening file size, PNG Optimizer makes web pages load faster and saves bandwidth. Easy to use, it offers drag & drop functionality and an intuitive interface for users of all tech levels. Note that this is an active project, and bug reports or feature requests are welcome via the add-on's homepage."

Extension stats

By: loora
Users: 1,000+
Rating: 5.00 (1)
Version: 0.1.3 (Last updated: 2023-07-25)
Creation date: 2019-08-15
Risk impact: Very low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Permissions:
  • storage
  • contextMenus
Size: 1.26M

Other platforms

PNG Optimizer (v0.1.1)
4.75 (4) 68
PNG Optimizer (v0.1.3)
5.00 (1) 442
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Extension summary

PNG Optimizer is a browser extension that helps 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 interface (top section) and then wait for a 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 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 the download location is the default location in your browser.

Note 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 performances and results. Please use the one that best matches your need.

  1. optipng.js: https://github.com/LI-NA/optipng.js/blob/master/demo/js/optipng.js
  2. pngcrush.js: https://github.com/richardassar/pngcrush.js/blob/master/pngcrush.js
  3. pngquant.js: https://github.com/psych0der/pngquantjs/blob/master/demo/js/pngquant.js
  4. compressor.js: https://github.com/fengyuanchen/compressorjs/blob/master/dist/compressor.js
  5. browser-image-compression.js: https://github.com/Donaldcwl/browser-image-compression/blob/master/dist/browser-image-compression.js

Note 2: 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 out the bug report form on the add-on's homepage (https://mybrowseraddon.com/png-optimizer.html).

User reviews

So far is awesome
by Jose, 2019-04-21
View all user reviews

Extension safety

Risk impact

PNG Optimizer does not require any sensitive permissions.

Risk likelihood

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

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Promo images

PNG Optimizer small promo image
Small promo image

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