Repetitive browser tasks eating your team's time
Your team copies data between tabs, reformats it and pastes it into another tool dozens of times a day. A browser extension does that work in one click, right where the work already happens.
Chrome Extension Development
Chrome Extension Development Services
We design and build browser extensions on Manifest V3, from internal productivity tools to public Web Store products. Connected to your systems, scoped to the permissions they need and built to keep working as Chrome evolves.
- Manifest V3
- Security By Default
- You Own The Code
- Long-Term Support
0+ Years of combined experience
0+ Browser extensions shipped
0% Client satisfaction
0/7 Monitoring & support
The cost of the wrong tool
Is the browser where your team loses time?
If any of these feel familiar, a custom extension is not a luxury, it is the fix. Every one of these problems is solvable with the right approach.
Off-the-shelf extensions that almost do the job
There is always an extension that does eighty percent of what you need and nothing for the rest. A custom build does the exact job, with no clutter and no features you have to work around.
Store extensions you cannot trust with data
Free extensions often read everything on the page and send it who knows where. When the tool handles company or customer data, you need one built to a permission model you control and can audit.
No connection to your own systems
A generic extension cannot talk to your CRM, internal API or dashboard. A custom extension surfaces your data in the browser and pushes actions straight back to your systems.
Manifest V3 broke the extension you relied on
Chrome's move to Manifest V3 retired older extensions and APIs. If a tool your team depended on stopped working, it needs rebuilding on the current platform, properly.
A product idea that lives in the browser
Some of the best software products are browser extensions. If your idea belongs in the browser, you need a partner who can build it, ship it to the Web Store and keep it maintained.
Built with proven tools
Technologies we work with
We build on the browser's native APIs and only bring in external tools where they genuinely add value and are maintained.
JS JavaScript
TS TypeScript
V3 Manifest V3
Cr Chrome APIs
Re React
Vi Vite
SW Service Workers
WS Web Store
Ed Edge
Fx Firefox
DB IndexedDB
Tw Tailwind
No Node.js
Wp Webpack
Je Jest
Gi Git
What we build
Our Chrome extension development services
From a focused productivity tool to a product-grade extension with its own backend, every project starts from a blank file.
Custom Chrome Extension Development
Browser extensions built from scratch on Manifest V3 for the exact workflow you need, whether internal tooling or a public product.
Productivity & Workflow Tools
Extensions that automate repetitive browser tasks, fill forms, capture and reformat data or surface the information your team needs without leaving the page.
CRM & Internal System Integration
Extensions that connect the browser to your CRM, helpdesk, internal API or dashboard, so your team acts on your data without switching tabs.
Secure, Permission-Scoped Builds
Extensions built to request only the permissions they need, handle data responsibly and pass both Web Store and internal security review.
Chrome Web Store Publishing
Extensions prepared and submitted to the Chrome Web Store, meeting review and policy requirements so listing approval is not a scramble.
Cross-Browser Extensions
One codebase that runs on Chrome, Edge and Brave, and on Firefox where the APIs allow, so you reach every user without maintaining separate builds.
Manifest V3 Migration
Older Manifest V2 extensions rebuilt on Manifest V3 with service workers and the current APIs, so they keep working as Chrome retires the old platform.
Team & Enterprise Deployment
Private extensions rolled out to your workforce through managed Chrome policies or a private Web Store listing, with the controls your IT team needs.
Data Capture & Automation
Extensions that capture, structure and export data from the pages your team works in, cutting manual copy and paste out of the daily routine.
Browser API & DOM Integration
Deep work with the tabs, storage, scripting, context menu and messaging APIs, plus reliable DOM injection that survives the sites you target.
Performance & Reliability
Lean service workers and efficient content scripts that do their job without slowing the browser or draining battery on the user's machine.
Maintenance & Support
Ongoing updates as Chrome ships new versions and policy changes, plus a fast helpdesk that keeps your extension published and working.
Who we work with
Industries we serve
We have built browser extensions for sales teams, recruiters, marketers and SaaS products. We learn your workflow before we build for it.
SaaS & Tech
Sales Teams
Recruitment
E-commerce
Marketing & SEO
Education
Finance
Logistics
Agencies
Productivity
Why choose us
Chrome extension development done the right way
Anyone can ship an extension that technically runs. We build extensions that are secure, lean, compliant with Web Store policy and fully owned by you, then keep them working as Chrome changes.
Start your project-
Built on current Manifest V3
We build on the platform Chrome actually supports today, so your extension is not obsolete the month after it ships.
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Least-privilege permissions
We request only the permissions the extension genuinely needs, which protects your users and speeds up store review.
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Connected to your systems
We wire extensions into your CRM, API or dashboard so they do real work, not just rearrange the page in front of you.
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We handle Web Store review
We know the Chrome Web Store policies and prepare your listing to pass, including the data-use disclosures reviewers look for.
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Cross-browser where it counts
We build on standards so the same extension runs on Chrome, Edge and beyond wherever the APIs allow.
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Lean and reliable
Efficient service workers and content scripts that do the job without slowing the browser or breaking when a target site changes.
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You own the code
Full IP assignment on every contract. The extension and its source belong to you, with no recurring licence on your own tool.
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Maintained as Chrome evolves
Chrome ships updates and policy changes constantly. We keep your extension compatible and published instead of letting it quietly break.
How we work
Our Chrome extension development process
Eight clear stages, each with a visible output you can review and approve. No black box between kickoff and launch.
- 01
Discovery
We map the workflow, the sites it touches and the systems the extension needs to connect to.
- 02
Architecture
Manifest, permissions, service worker and messaging approach agreed before a line of code is written.
- 03
UI Design
The popup, options page and any injected interface designed and reviewed before development starts.
- 04
Development
Clean, documented code built on Manifest V3 with demos at every milestone.
- 05
QA & Testing
Cross-site, cross-browser and permission testing before deployment or store submission.
- 06
Launch
Deployed to your team or submitted to the Chrome Web Store with policy requirements met.
- 07
Review Support
Any reviewer feedback addressed quickly so your listing is approved without unnecessary delay.
- 08
Support
Ongoing updates and compatibility checks with each Chrome release.
What is included
An off-the-shelf extension is not the same tool
The difference between an off-the-shelf extension and a custom-built one is everything that happens under the surface. Here is what comes standard with every extension we deliver.
What you get Store extension Devlon StedyDesk
Built around your exact workflow
Full IP ownership, no recurring licence
Least-privilege, audited permissions
Connected to your CRM or API
Manifest V3 and current APIs
Cross-browser where supported
Basic browser functionality
Generic, one-size-fits-all features
Web Store submission handled
Post-launch support & updates
Client words
Trusted by teams that work in the browser all day
Our reps used to copy lead details between our CRM and three other tabs all day. The extension they built surfaces everything in one panel and writes back to the CRM. It gave each rep about an hour back every day.
They rebuilt our sourcing extension on Manifest V3 after the old one stopped working. It is faster than before, passed Web Store review first time and our recruiters barely noticed the switch.
Our whole product is a Chrome extension and they took it from idea to a published Web Store listing. The permission model is clean, it runs lightly and they handle every Chrome update before it becomes our problem.
Questions, answered
Chrome extension development FAQs
How much does a Chrome extension cost?
Most custom extension projects land between $4,000 and $40,000 depending on complexity and how many systems it connects to. A focused single-purpose tool sits at the lower end; a product-grade extension with a backend sits higher. Every quote is itemized before work begins.
How long does it take to build a Chrome extension?
A focused extension typically takes 3 to 7 weeks. A product-grade extension with accounts, a backend and integrations runs 8 to 16 weeks. You see a working build early and a demo every sprint.
What is Manifest V3 and does it affect me?
Manifest V3 is Chrome's current extension platform. It changed how extensions run, replacing background pages with service workers and tightening permissions. Older Manifest V2 extensions are being retired, so anything built before it usually needs migrating to keep working.
Can the extension connect to our CRM or internal tools?
Yes. Connecting the browser to your CRM, helpdesk, internal API or dashboard is one of the most common reasons clients commission a custom extension. We handle authentication and data flow securely.
Will it work on Edge, Brave and Firefox too?
Often yes. Chrome, Edge and Brave share the same engine, so a Chrome extension usually runs on all three. Firefox uses a similar but separate API, which we can target from one codebase where the features line up.
Can you publish it to the Chrome Web Store?
Yes. We prepare the listing, assets and required data-use disclosures, submit the extension and handle any reviewer feedback until it is approved and live.
Can you distribute it privately to our team only?
Yes. We can publish as an unlisted or private Web Store listing, or distribute through managed Chrome enterprise policies, so only your people can install it.
Is a custom extension secure?
It is as secure as it is built to be. We request only the permissions the extension needs, validate data, avoid risky injection patterns and follow Web Store policy, so it passes review and protects your users.
Can you rebuild our old extension that stopped working?
Yes. We audit the existing extension, then rebuild it on Manifest V3 with current APIs, keeping the behaviour your users rely on while bringing it back into compliance.
Do you build the backend too?
Yes. Many extensions need an API, database or authentication behind them. We build that alongside the extension so the two fit, or integrate with your existing backend.
Will it keep working as Chrome updates?
On a maintenance plan, yes. Chrome ships frequent updates and policy changes. We test against them and update your extension so it stays published and functional.
What happens after the extension launches?
Every project includes a handover, documentation and a warranty window for fixes. Most clients move onto a maintenance plan so the extension stays compatible as Chrome evolves. We are still available for version two, not just while the invoice is open.
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