How much does it cost to build a Chrome extension?
Cost guides · TechDesk · · 6 min read
The short answer
A focused Chrome extension that automates one task on one site typically costs ₹50k to ₹1.5L in India or $1.5k to $4k worldwide. A full extension with accounts, a backend and several workflows costs ₹1.5L to ₹4L or $4k to $10k. Extension platforms used across teams start from ₹4L or $10k. These are indicative ranges from our own pricing.
Chrome extension cost by scope
| Scope | Typical example | India (INR) | Worldwide (USD) |
|---|---|---|---|
| Focused | One task on one site: fill forms, extract data, add a button | ₹50k – ₹1.5L | $1.5k – $4k |
| Full extension | Accounts, backend sync, settings, several workflows | ₹1.5L – ₹4L | $4k – $10k |
| Platform | Team roles, admin dashboard, audit logs, many sites | From ₹4L | From $10k |
What drives the cost of an extension
- How many websites it works on: every site has its own page structure to handle.
- Whether it needs a backend for accounts, sync or shared data.
- How often the target sites change, which sets the maintenance you will need.
- Permissions: the fewer it asks for, the easier the store review and the more users trust it.
- Browsers: Chrome, Edge and Brave share one codebase; Firefox and Safari need extra work.
Chrome Web Store review and Manifest V3
New extensions are built on Manifest V3, the current Chrome platform. Every public extension goes through Chrome Web Store review, which checks permissions, privacy disclosures and a clear single purpose. Internal tools can be published privately to your organisation instead. We plan permissions and the privacy policy from day one so review is not a surprise at the end.
How long does it take to build a Chrome extension?
A focused extension usually takes 2 to 4 weeks, plus store review. A full extension with a backend usually takes 6 to 10 weeks. You get a working build to install every week.
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Estimate my extensionFrequently asked questions
Can a Chrome extension work on Edge too?
Yes. Edge, Brave and other Chromium browsers run the same extension with little or no change.
Do I need a server for my Chrome extension?
Only if it needs accounts, shared data across devices or heavy processing. Many useful extensions run entirely in the browser.
What does it cost to maintain an extension?
Mostly updates when the sites it works on change their layout, plus Chrome platform updates. We quote this as a small monthly plan.