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

Latest Version

Version
0.1.3
Update
July 25, 2023
Size
1.2MiB
Developer
Category
Users
1,000+
Rating
5 ★
Manifest Version
3
Web Store Status
Languages Support
English
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Permissions
Storage
ContextMenus
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PNG Optimizer Extension

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).
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "version": "0.1.3", "manifest_version": 3, "name": "PNG Optimizer", "offline_enabled": true, "permissions": ["storage", "contextMenus"], "homepage_url": "https://mybrowseraddon.com/png-optimizer.html", "description": "Optimize PNG images and reduce the file size right in your browser!", "commands": { "_execute_action": {} }, "background": { "service_worker": "background.js" }, "action": { "default_title": "PNG Optimizer", "default_icon": { "16": "data/icons/16.png", "32": "data/icons/32.png", "48": "data/icons/48.png", "64": "data/icons/64.png" } }, "icons": { "16": "data/icons/16.png", "32": "data/icons/32.png", "48": "data/icons/48.png", "64": "data/icons/64.png", "128": "data/icons/128.png" }}
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How to download and manually install PNG Optimizer extension for Chrome

Looking for a way to install PNG Optimizer extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install PNG Optimizer extensions manually, this article outlines two simple methods to effortlessly install PNG Optimizer extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download PNG Optimizer extension and manually install through Drag &Drop

If you ever need to manually install a PNG Optimizer extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the PNG Optimizer Extension by clicking the "Download CRX" button on the website.

Look for the PNG Optimizer extension you wish to install. Go to the website and download the PNG Optimizer extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for PNG Optimizer extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the PNG Optimizer extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download PNG Optimizer extension for Chrome and install in Developer Mode

This is another method to install PNG Optimizer extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the PNG Optimizer extension file

Select and download the PNG Optimizer extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the PNG Optimizer extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your PNG Optimizer extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the PNG Optimizer extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install PNG Optimizer extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Jose (ID: 0000009189fa1952) Voted 5 ★ - Updated 04/21/2019 So far is awesome