Chrome extension development — Content Factory
Content Factory builds Chrome extensions for startups, agencies and companies worldwide — from single-function utilities at $500 to full browser SaaS products with subscription billing. Every extension is built on Manifest V3, tested, submitted to the Chrome Web Store and handed over with its complete source code. The price is fixed in writing before development begins.
The handover
Finished files
Production-ready output in the format your printer, platform or workshop actually needs — press PDF, editable source, CAD file, font binary or deck, as the work requires.
Editable sources
The working files, not just the export, so your team can change the work later without coming back to us.
Full rights
Copyright transfers to you on final payment. Nothing we make for you is resold or reused elsewhere.
Two revision rounds
Included in the quoted price. Corrections are logged against the draft rather than argued over on a call.
Five steps, and you approve the first three
01 · Brief
You tell us what the finished thing has to do, and send whatever material you already have.
02 · Scope & price
A written scope, a fixed figure and a delivery date, usually within one working day.
03 · Structure
You sign off the architecture before production starts, so nothing large is built on a wrong assumption.
04 · Production
Work arrives in stages as it finishes, not all at the end, with two revision rounds included.
05 · Handover
Files, sources and rights in your hands, and the invoice closed.
Often commissioned together
- Curriculum & syllabus development
- Coaching institute material
- Workbook & practice set development
- Teacher guides & solution manuals
- Ghostwriting services
- Book production & publishing
- Editing & proofreading
- Translation services
- Subtitling & captions
- Investor pitch deck design
- Company profile writing & design
- Business plan writing
Textbook writing services — how we produce it
Typical extent is 180 to 320 pages with 40 to 120 figures. A single title runs eight to fourteen weeks; a ten-title multi-grade programme runs six to nine months and is staged by grade block, so the first books are in your hands while later grades are still in draft.
Because writers, translators, designers, draughtspeople and typesetters sit in the same building in Chennai, this can be commissioned together with everything around it: translation into any of a hundred-plus languages, the figures and illustrations, the typesetting, the presentation and the production files. One schedule, one point of contact, one invoice.
Pricing is quoted in US dollars and fixed in writing before work starts. Fifty per cent is payable in advance and the balance on delivery, with long projects staged so neither side carries the whole risk. Two revision rounds are included, and copyright transfers to you in full on final payment, together with the editable source files.
Describe what the extension should do. Content Factory replies with a scope, a fixed price and a delivery date — usually within one working day.
Chrome extension development, priced by what it does
Most extension quotes arrive only after two calls. Content Factory publishes four tiers, because the tier is decided almost entirely by one question — does the extension need a server? Every package includes QA testing, Manifest V3 compliance and Chrome Web Store submission.
| Package | Price | Ideal for | What is included | Timeline |
|---|---|---|---|---|
| Starter | $500 – $1,500 | Simple utility tools, page tweaks, single-function buttons | Popup interface, local browser storage, content-script page changes. No backend. | 1–2 weeks |
| Standard API-connected | $1,500 – $4,000 | Tools that need outside data, CRM links or user logins | Third-party API integration, user authentication, simple backend database. | 3–5 weeks |
| Advanced automation and AI | $4,000 – $10,000 | Scrapers, AI assistants, complex multi-step workflows | DOM parsing, OpenAI or Claude integration, workflow automation, custom dashboard. | 6–10 weeks |
| Enterprise browser SaaS | $10,000 – $25,000+ | A full software business running inside the browser | Stripe subscription billing, admin portal, enterprise security, cloud architecture. | 2–4+ months |
Indian clients are quoted in rupees at the same scope. Gulf clients can be invoiced in AED. The price is fixed in writing before development starts, and the source code is yours on final payment.
Hire a Chrome extension developer by the hour or the month
For ongoing products, evolving scope, or agencies that need white-label development, Content Factory provides a dedicated developer from our Chennai team, working on your time zone for the overlap hours you need.
| Engagement | Rate | Best for |
|---|---|---|
| Hourly | $25 – $50 per hour | Small changes, bug fixes, Manifest V3 migrations, short feature additions |
| Monthly full-time 160 hours | $3,500 – $7,000 per month | Building an MVP, scaling a product, or a standing development capacity |
| White-label for agencies | Custom | Agencies that sell extensions under their own name and need delivery behind them |
After launch: keeping the extension working
Chrome changes its APIs, and websites change their pages. An extension that reads a page breaks the day that page is redesigned. These plans exist so that does not happen quietly.
| Service | Price | What it covers |
|---|---|---|
| Chrome Web Store optimisation | $250 – $500 flat | Keyword-optimised listing, screenshots, promotional tiles and a compliance review before submission |
| Custom UI and UX design | $300 – $800+ flat | Figma prototypes and branded design for the popup, options page and dashboard |
| Standard maintenance | $100 – $300 per month | Bug fixes, Chrome API updates, server monitoring, fixes when target websites change |
| Priority support | $500+ per month | Guaranteed response times, feature additions and scaling as your user base grows |
Every kind of browser extension
Productivity tools
Tab managers, note-taking, clipboard tools, focus timers and workflow shortcuts.
AI assistants
Extensions that summarise, rewrite, translate or answer questions about the page you are on, using OpenAI, Claude or Gemini.
Data and scraping
Structured extraction from web pages into sheets, CRMs or your own database — within the target site’s terms.
CRM and sales tools
LinkedIn and Gmail helpers, lead capture, and one-click push to HubSpot, Salesforce or Zoho.
E-commerce
Price trackers, coupon tools, product comparison and seller-side dashboards.
Internal company tools
Extensions deployed privately to your staff through Google Workspace, never published publicly.
Scope first, code second
1 · Free scoping call
Thirty minutes on what the extension must do, which sites it touches, and whether it needs a server.
2 · Written scope and price
A feature list, the tier, the fixed price and the date. Nothing is billed that is not in this document.
3 · Clickable prototype
For Standard tiers and above, a Figma prototype of the popup and screens before a line of code.
4 · Build and weekly builds
A working build every week you can install and test yourself.
5 · QA and store submission
Testing across Chrome versions, then Chrome Web Store submission and review handling.
6 · Handover
Full source code, the store account transferred to you, and documentation.
A Chennai studio with global clients since 2011
Published prices
Four tiers and hourly rates stated before you call. Most extension developers quote only after a meeting.
Manifest V3 from day one
Every extension is built on Manifest V3, the current required standard. No legacy code that stops working.
You own everything
Source code, the Chrome Web Store listing and any backend are yours on final payment.
Designed, not just coded
The same studio designs websites, apps and brand identities, so the extension looks like your product.
Time-zone overlap
Review calls on US, UK, Gulf, Europe or Asia-Pacific time.
Web and app too
If the extension needs a website, a dashboard or a mobile app beside it, one team builds all of it.
Chrome extension developers for 180 cities worldwide
Extensions are built and delivered remotely, so where you are makes no difference to the work — only to the time zone of our calls and the currency of the invoice. Content Factory builds for clients in these cities and anywhere else.
India
Chennai · Bengaluru · Mumbai · Delhi · Hyderabad · Pune · Gurugram · Noida · Kolkata · Ahmedabad · Coimbatore · Kochi · Jaipur · Chandigarh · Indore · Lucknow · Thiruvananthapuram · Visakhapatnam · Madurai · Nagpur · Bhubaneswar · Vadodara · Surat · Mysuru · Mangaluru · Tiruchirappalli · Vijayawada · Bhopal · Dehradun · Guwahati
United States
New York · San Francisco · San Jose · Seattle · Austin · Boston · Los Angeles · Chicago · Dallas · Houston · Atlanta · Miami · Denver · Washington DC · Philadelphia · San Diego · Phoenix · Raleigh · Salt Lake City · Portland · Minneapolis · Nashville · Charlotte · Detroit · Pittsburgh · Columbus · Orlando · Tampa · Las Vegas · Kansas City
United Kingdom and Ireland
London · Manchester · Birmingham · Edinburgh · Glasgow · Bristol · Leeds · Cambridge · Oxford · Liverpool · Newcastle · Sheffield · Nottingham · Brighton · Reading · Belfast · Cardiff · Dublin · Cork · Galway
Canada
Toronto · Vancouver · Montreal · Calgary · Ottawa · Edmonton · Waterloo · Winnipeg · Halifax · Quebec City · Victoria · Mississauga
Europe
Berlin · Munich · Hamburg · Frankfurt · Amsterdam · Rotterdam · Paris · Lyon · Madrid · Barcelona · Lisbon · Milan · Rome · Zurich · Geneva · Vienna · Stockholm · Copenhagen · Oslo · Helsinki · Warsaw · Prague · Budapest · Brussels · Tallinn · Vilnius · Athens · Bucharest · Belgrade · Kraków
Middle East
Dubai · Abu Dhabi · Sharjah · Riyadh · Jeddah · Dammam · Doha · Kuwait City · Manama · Muscat · Tel Aviv · Amman · Cairo · Istanbul · Ankara
Asia-Pacific
Singapore · Kuala Lumpur · Jakarta · Bangkok · Ho Chi Minh City · Hanoi · Manila · Hong Kong · Taipei · Seoul · Tokyo · Osaka · Shanghai · Shenzhen · Colombo · Dhaka · Kathmandu · Karachi · Lahore · Islamabad
Australia and New Zealand
Sydney · Melbourne · Brisbane · Perth · Adelaide · Canberra · Gold Coast · Auckland · Wellington · Christchurch
Africa and Latin America
Lagos · Nairobi · Cape Town · Johannesburg · Accra · Kigali · Casablanca · São Paulo · Mexico City · Buenos Aires · Bogotá · Santiago · Lima
Cost, time and ownership
How much does it cost to build a Chrome extension?
From $500 for a simple utility with no server, $1,500 to $4,000 for one that connects to an API or needs logins, $4,000 to $10,000 for automation or AI tools, and $10,000 upward for a full browser SaaS product. The price is fixed in writing before work starts.
How long does development take?
One to two weeks for a Starter extension, three to five for Standard, six to ten for Advanced, and two to four months or more for Enterprise.
Does Google charge to publish an extension?
Google charges a one-time $5 Chrome Web Store developer registration fee. It does not charge per user or per install.
What is Manifest V3?
The current standard Chrome requires for all extensions. Older Manifest V2 extensions have been phased out, so every extension we build uses V3.
Do I own the source code?
Yes. The code, the store listing and any backend transfer to you in full on final payment.
Can you make it work in Edge, Brave and Firefox?
Edge and Brave run Chrome extensions directly. Firefox needs small changes, which we quote as an add-on.
Can you fix or update an extension someone else built?
Yes, at the hourly rate. We review the code first and tell you whether it is worth fixing or cheaper to rebuild.
Do you sign an NDA?
Yes, before you share your idea.
Before you commission
How much does textbook writing services cost?
Prices are fixed in writing before work begins. Scope, language count and turnaround move the figure; volume across a programme brings it down. Send the brief and you have a number within a working day.
How long does it take?
Most single deliverables run three to fourteen weeks depending on length and complexity. Programmes are staged so early parts reach you while later parts are still in production. You get a date with the quote.
Who does the work?
A specialist from our school & college course books team, with an editor and a production person on the same project. Everyone is bound by the same confidentiality terms.
Do I own the result?
Yes. Full copyright transfer, editable sources and production-ready files on final payment. Nothing is resold or reused.
Can it be produced in other languages?
Yes — any of a hundred-plus languages, typeset in the same studio so layout and page numbers match across editions.
Do you work with clients outside India?
Yes. Publishers, institutions and founders in the United States, United Kingdom, United Arab Emirates, Canada, Australia and Japan. Work is delivered by email and shared drive and quoted in US dollars.
Tell us what you need made
Send the brief and we reply with a scope, a fixed price and a date — usually within one working day. Whole programmes are quoted the same way as single titles.
info@contentfactory.in · contentfactory14@gmail.com · Chennai, Tamil Nadu, India
Section pages
- All services A–Z
- Design services
- Engineering drawing
- Web & app design
- Font development
- Research & expert books
- Film writing
- Film & OTT writing
- Political strategy
- Business strategy
- Speech writing
- Lyrics writing
- Copywriting & content
- News & article writing
- Biography & life-story books
- OCR & digitisation
- YouTube transcription
- Transcription & proofreading
- Music creation
Service pages
- Textbook writing
- Curriculum development
- Coaching material
- Workbook development
- Teacher guides
- Ghostwriting
- Book publishing
- Editing & proofreading
- Translation
- Subtitling
- Pitch decks
- Company profiles
- Business plans
- Annual reports
- Drawing sets
- CAD drafting
- 3D CAD modelling
- BIM modelling
- Website design
- Mobile app design
- UI/UX design
- Logo & brand identity
- Custom fonts
- Screenplay writing
- Research monographs
- Thesis to book
- Resume & CV
- SEO content
- Technical writing
- Grant proposals
- White papers
- Case studies
- Training material
- Biography writing
- Children’s books
- Novels & fiction
- Transcription
- Legal translation
- Localisation
- Voice-over & dubbing
- eBook & Kindle
- Book covers
- Brochures & catalogues
- Packaging
- Interior drawings
- Market research
- Textbook writing by board
- Textbook writing by subject
- Textbook writing by city
- Resume & CV by city
- LinkedIn profiles by city
- Company profiles by city
- Textbook writing in Dubai
- Book writing in Dubai
- Pitch decks in Dubai
- Textbook writing in the USA
- Book ghostwriting in the USA
- Pitch decks for US investors
The studio
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