8 Chrome Extensions with Impressive Revenue (by Indie Developers)

There are a lot of valuable Chrome extensions that make money for their developers. While most extensions don't list their revenue, we do have information from some companies and developers.

Most famously, the browser extension company Honey sold to Paypal for $4 billion.

Similarly, the grammar-checking extension Grammarly raised $90 million at a $1 billion valuation.

The language-learning extension startup Toucan also recently raised $3 million and then another $4.5 million from investors.

But what about Chrome extensions created by individual developers? Do these extensions make money? The answer is yes! In this article, we share 8 Chrome extensions made by independent developers (indie developers) that make money.

Oh and just so you know, we're not affiliated with any of these developers. But if you want to monetize Chrome extensions check out our free, open-source project ExtensionPay.

#1 Gmass - $130k per month

Gmass is a browser extension that lets you send email campaigns from within Gmail. The extension has various plans for individuals and teams that range from $8-$20 per month.

In this interview with IndieHackers, the developer talks about the creation of the app and its growth, saying that he currently has almost 10,000 subscribers and makes $130k per month as of 2019. Pretty impressive!

#2 Closet Tools - $42k per month

Closet Tools is an extension that helps users automate posting on the fashion re-selling marketplace Poshmark. It currently charges users $30 per month.

The creator lists Closet Tools on IndieHackers where his monthly revenue is verified around $42k per month. To hear how he did it, you can listen to a podcast where he explains how he grew his business from its first users to full-time income for his family.

#3 CSS Scan - $100k+

CSS Scan is a browser extension that lets developers easily view and modify CSS rules on webpages. It currently charges a one-time sale price of $69.

The creator lists his extension on IndieHackers at $100k of revenue with a screenshot as of August 2020. CSS Scan had 754 votes on Product Hunt in its first launch and 1917 votes in its second launch.

#4 GoFullPage - $10k per month

Go Full Page - Full Page Screen Capture is an extension that lets users take screenshots of full web pages. The extension is free with premium features at $1 per month.

The creators made the extension to solve their own problem and found organic growth to 4 million users and 53k reviews on the Chrome Web Store when they decided to monetize by adding premium features. The revenue last listed in 2021 is $10k per month.

#5 Spider - $10k in two months

Spider is a visual point-and-click web scraper with a price of $38.

The creator, Amie Chen, listed her revenue on IndieHackers at $10k in two months. Spider received 1345 votes and #1 Product of the Day on Product Hunt.

#6 Night Eye - $3.1k per month

Night Eye is a browser extension that automatically creates dark-mode versions of websites to reduce eyestrain. Night Eye is free with several yearly and lifetime subscription options for premium features.

The creators of Night Eye list their revenue at $3.1k per month and also give detailed notes about all the steps they took to get there.

#7 BlackMagic- $3k per month

BlackMagic.so is a suite of tools for Twitter, including a browser extension that acts as a personal CRM. Memberships start at $8 / month.

Developer Tony Dinh shares his revenue with a screenshot first at $2.1k / month then at $3k / month just two weeks later.

Dinh shares how he did it in this Indie Hackers post.

#8 Weather Extension - $2.5k per month

Weather Extension is an extension for showing the weather in your browser. It's free with premium features at $9.99.

The creator, Tim Leland, lists his revenue at $2.5k per month in this interview with IndieHackers. Today, the extension has over 200,000 users. Check out the interview for more information about how the developer grew his extension!

Bonus: Adblock - $3.7 million per month?

Adblock is a Chrome extension that blocks ads by Michael Gundlach. We don't know Adblock's exact revenue, but with a short analysis on the podcast My First Million we see that its top competitor (confusingly named Adblock Plus) made $44 million in revenue in 2017. Adblock itself has more users and more reviews so it seems safe to say that its revenue was around the same as its competitor if not higher.

So there you have it, 8 (plus one) extensions by indie developers that make money. This is just a small sampling of the many thousands of paid Chrome extensions.

If you want even more data on paid Chrome extensions, here's a spreadsheet of all the paid Chrome extensions listed on Chrome Web store. And undoubtedly there are thousands more extensions that we don't have data for.

If you want to monetize Chrome extensions, we think ExtensionPay is the easiest way. It's free to use, open-source, secure, and easy to integrate into your extension without any backend code required — it literally saves weeks of tedious work. View more info about ExtensionPay here.