I will create a custom chrome extension or tampermonkey userscript


About this gig
Need a custom Chrome extension or a Tampermonkey userscript that saves you time? I build browser tools that automate repetitive tasks, add missing features to websites and make your daily workflow faster.
What I can build:
- Custom Chrome extensions (Manifest V3), also working on Edge, Brave and Opera
- Tampermonkey / Greasemonkey userscripts
- Popup, options page and side panel tools
- Content scripts that change or add features to any website
- Auto-fill forms, auto-click and repetitive task automation
- Data extraction from pages to CSV / clipboard
- Productivity tools: tab managers, notes, timers, blockers, highlighters
- Fixing or updating old Manifest V2 extensions to V3
What you get:
- Clean, commented JavaScript source code
- Tested and working extension or script
- Step-by-step install guide (and help preparing a Chrome Web Store upload)
How it works:
1. Message me with the website and what you want the tool to do
2. I confirm the scope and the right package
3. I build, test and deliver with full source code
Message me before ordering so I can check your idea and suggest the best package.
Get to know Yasiru H
Full Stack Web Developer and LaTeX Typesetter
- FromSri Lanka
- Member sinceJan 2023
- Avg. response time1 hour
- Last delivery3 years
Languages
Sinhala, English
My Portfolio
Other Software Development Services I Offer
FAQ
Will it work in Edge, Brave or Opera too?
Yes. Chrome extensions built with Manifest V3 also run in Edge, Brave, Opera and other Chromium browsers. Userscripts work in any browser with Tampermonkey or Violentmonkey.
Can you publish it to the Chrome Web Store?
Publishing needs your own developer account, so you upload it yourself. I deliver a ready-to-upload zip, store description and step-by-step guide to make it easy.
Do I get the full source code?
Yes. Every package includes clean, commented JavaScript source code that you fully own, plus install instructions.
What should I send before ordering?
The website link, what the tool should do step by step, and screenshots if possible. I'll confirm it can be done and recommend the right package.
Can you update my old Manifest V2 extension?
Yes. I can migrate Manifest V2 extensions to V3 so they keep working in current Chrome. Send me the source code to get a quote.
What can't you build?
Anything that breaks a website's terms, spams, steals data or bypasses logins, captchas or paywalls. Everything else that automates your own workflow is welcome.

