Browser Ext

Browser Extension Development Services

We offer full⁠-⁠stack solutions for your browser extension development projects. Our team of engineers provides browser extension development services for Chrome, Safari, Edge, and other popular browsers.

What Is a Browser Extension Development?

A browser extension is a small software program that enhances the functionality of a web browser. It typically adds new features, modifies existing ones, or integrates with external services to provide additional functionality and customization options to the user's browsing experience.

We Are Developing Browser Extensions Using 3 Building Blocks

All browser extensions are made up of 3 building blocks: the user interface, the content scripts, and the background scripts. At Fively, we provide pixel⁠-⁠perfect UX/UI design for your browser extensions development solutions. In addition, we have software developers who are proficient in using JavaScript enough to implement even the most complex functionality.

Building Blocks

What Our Clients Say

Our Engineers Develop Add⁠-⁠Ons for All Popular Browsers

At Fively, our tech⁠-⁠savvy software engineers develop extensions for all popular web browsers. Find out how custom add⁠-⁠ons for 3 of the world's most popular browsers can help you unleash the full potential of your business.

Our Featured Case Studies

Make sure to take a closer look at cutting⁠-⁠edge browser extensions and other state⁠-⁠of⁠-⁠the⁠-⁠art web solutions that have been developed by our experienced engineers.

Identity-Access Management Automation: Uniqkey

Identity-Access Management Automation: Uniqkey

We have created an identity and access management automation system that is recommended for use even by the association of Danish Auditors.

Identity Verification Services Development: Swordfish

Identity Verification Services Development: Swordfish

We built a set of top-market identity verification service apps that fully automated contacts data gathering and management, making it a 1-minute procedure.

Machine Learning Chatbot Engineering for an AR Company

Machine Learning Chatbot Engineering for an AR Company

Fively's engineers have provided machine learning chatbot development assistance to a large augmented reality platform headquartered in Europe.

A Shopify Case Study. Abandoned Cart Recovery Solution: MessageBuy

A Shopify Case Study. Abandoned Cart Recovery Solution: MessageBuy

A Shopify case study on abandoned cart recovery solution development with personalized SMS notification, that increased consumers' conversion by 40%.

Web Platform Customization: WebinarNinja

Web Platform Customization: WebinarNinja

Fively has provided web platform customization for #1 rated webinar platform by HubSpot, which makes it real to start your very first webinar in less than 10 seconds.

Benefits of a Custom Browser Extension

Investing in a custom browser extension development for your business can be astonishingly beneficial as it enhances the user experience and increases brand visibility, leading to improved engagement and potential growth opportunities.


Enhanced functionality

Extend and customize your browser with additional features and tools for a tailored browsing experience.


Improved productivity

Streamline tasks, automate processes, and access frequently used tools more quickly, boosting efficiency.


Personalized browsing

Customize appearance, behavior, and preferences for a more enjoyable experience.

Data protection

Enhanced security and privacy

Block malicious content, implement privacy measures, and protect against threats.


Seamless integration

Integrate with external services for easier sharing, bookmarking, and content management.


Community and collaboration

Engage with the user community, contribute to your audience, and gain recognition for your work.

Browser Addons Development Steps

The process of developing a browser extension consists of 4 steps and involves planning the purpose and features, designing and coding using web technologies, testing for issues, and then deploying the extension for users to download.


Planning and conceptualization

Define the purpose, features, and functionality of your browser extension. Identify the target browser(s) and plan the development process accordingly.


Design and development

Create a design for the extension's UI and develop the necessary code using web technologies. Implement the desired features and ensure compatibility with the targeted browsers.


Testing and debugging

Conduct thorough testing to identify and fix any bugs or issues. Test the extension on different browsers, devices, and operating systems to ensure proper functionality and compatibility.


Deployment and distribution

Package the extension, submit it for review, and make it available for users to download. Maintain and update the extension based on feedback and changes.

Awards and Recognition

Fively is a custom software development company, that has been gaining recognition throughout its existence.


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Frequently Asked Questions

What are browser extensions and plugins?

An extension is a kind of tiny piece of software that is integrated into a browser to add new features and vary its functionality to a certain extent. Such smart and handy solutions provide you with a means to perform previously inaccessible browser actions, as well as customize user interfaces of any browser and web page in such a way as to eliminate all Internet browsing challenges and make interactions with the Web as convenient and efficient as possible.

There are many variations of browser plugins, that can turn out to be extremely useful both at work and in everyday routine. The most popular are browser extensions for storing and managing passwords, capturing the screen, and creating screenshots. Various experts often resort to plugins for social media automation, a vast array of customized toolbars, some add-ons for handling and sourcing content online. There are a great many people who prefer browser extensions for concentration and time management, as well as plugins for personalizing user interfaces.

All modern browsers, including Google Chrome, Safari, Microsoft Edge, Mozilla Firefox, and Opera, support plugins and even have their own online stores from which any user can download the required browser add-on if necessary.

What is an example of a browser extension?

Present-day browser extensions come in all shapes and colors. If there is some kind of inconvenience or bottleneck that interferes with the comfortable use of a particular browser, then rest assured that someone has probably already developed an extension to solve the problem.

You must have dealt with some kind of extension, even if it seems to you that this is not the case. For example, love-hate mini-applications for blocking advertising pop-ups like AdBlock are a canonical representative of a browser add-ons universe.

Among the outstanding browser plugins, one cannot fail to mention those that were created in order to solve the global problems of the Internet. For example, the Dark Reader application in the Chrome Web Store alone has been downloaded by more than 4 million people. And all for the sake of making the homelike dark themes work on absolutely all websites, without exception. This is how browser extensions can help smooth things over and make the user experience a little more positive.

On top of all of this, it is worth noting some plugins, which are an absolute must-have application not only for individual users but also for entire companies. These are the following: best-selling Grammarly — a cutting-edge word processor, rock-solid Uniqkey — a smart password manager, user-friendly Todoist — a reliable task manager, and so on. These add-ons are able to streamline the workflow in any office, and will also come in handy even beyond regular hours.

By the way, many large companies expand the functionality of their products via developing browser extensions. For example, LinkedIn released an extension that will notify the user about related activities, and the official Google plugin allows you to quickly translate any page on the Web.

Why develop extensions for every browser?

Today is the day to develop a bespoke add-on since it will not be an exaggeration to say that, literally, everyone uses web browsers on a daily basis, which means the chances that you will find users for your product are by no means far-fetched. And if you are eager to build a product for office use exclusively, then browser plugin development is definitely the most cost-effective way to address a range of business problems.

The undeniable benefits that the development of custom browser extensions for businesses brings are the following:

  • It's fairly easy to install the extension you need. It doesn't take much - all you require is any modern web browser and access to the Internet.
  • A browser extension developed once will run on all devices that support this particular browser. Naturally, this works to a certain extent, but it still greatly expands the possibilities for using browser add-ons.
  • Unlike building a full-sized application, engineering a browser plugin is much more resource-efficient. For example, an average Chrome browser extension development is going to take half a year, while standalone app development might take a year.
  • Modern browser development tools have the functionality for cross-browser extension development. In simple terms, this means that it has become easier to create add-ons that will function properly in juncture with different browsers.
  • In addition, custom browser plugins development, be it Edge, Safari, or Chrome web extension development, gives an extra boost to your product. There are plenty of official browser plugins developed by large companies that either complement their products or consolidate the key features.

What browser should I make the extension for (Chrome, Firefox or Safari)?

The choice of the browser for which you should make an extension directly depends on what your target audience looks like.

Chrome browser plugin development is ideal if your clients are owners of Android OS devices and active users of Google services. Thinking about Safari extension development is a must for those who nurture a plan to release some products for Apple devices. If you're aiming at a large Microsoft audience, then your choice is plugin development for Edge.

But if your top priority is to cover the entire motley group of Internet users, then you should really consider finding engineers with experience in cross-browser extension development to hit many browsers with one add-on.

How to develop a browser extension?

Creating a browser extension is the engineering of a complex product that involves a whole team of browser extension developers, including coders, testers, and designers. To develop a browser extension, software engineers use programming languages such as CSS and JavaScript, HTML, various web extensions APIs, and other browser development tools.

The browser extensions development process does not differ in nature from any other type of software development and has an identical software development life cycle consisting of 7 phases. However, unlike the development of standalone software solutions, work on an average browser extension will take about 6 months and will entail fewer financial expenses.

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