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Fiverr Pro
English
$
USD
I will build a custom chrome or firefox browser extension
Klorent
About this gig
My extension Kick Chat Translator is live on both the Chrome Web Store and Firefox Add-ons. It translates a live chat stream in real time in both directions, on device first with a configurable cloud fallback chain, and it handles platform emotes. No ads, no tracking, nothing collected. It picked up its users organically across a dozen countries without a single euro of marketing.
Store review is where most extensions die. Mine passed on both stores, and it runs on Manifest V3, the only thing Google still accepts.
What I build: content scripts that modify pages, popup and options interfaces, background service workers, API integrations, data extraction into CSV or JSON, and automation of repetitive browser tasks.
You get the complete source code. No obfuscation, no license key, nothing phoning home. It is yours.
I work in French and English on European hours, so if you are in the EU we are online at the same time.
Message me with what the extension should do before you order. I will tell you straight whether it fits a package or needs a custom offer, and I will tell you if what you want is not possible rather than take your money and find out later.
Get to know Klorent
Klorent
Browser Extension Developer for Chrome and Firefox
- FromFrance
- Member sinceFeb 2025
Languages
English, French
I'm Killian, 31, based in France. I build browser extensions that actually ship: mine is published on both the Chrome Web Store and Firefox Add-ons, runs on Manifest V3, and carries no ads and no tracking. My background is in systems and networking, which is why I care about extensions that keep working after the first week rather than demos that break on the next site update. Cross browser, full source handed over, no strings attached. I work in French and English on European hours.
FAQ
Will it work on Firefox too?
Yes. Same codebase, packaged for both. Tell me when you order so I build it cross browser from the start rather than porting it afterwards.
Do I own the code?
Yes. Full source, no obfuscation, no license check, nothing phoning home. Do whatever you want with it, including reselling it.
Can you publish it to the store for me?
On the Complete package, yes, on your own developer account. Google charges a one time 5 USD registration fee that you pay directly to them. Review usually takes a few days and the timing is out of my hands.
Can it automate actions on a site I do not own?
Depends on that site's terms of service. Tell me the target before you order and I will give you a straight yes or no.
What do you need from me to start?
The target sites, what the extension should do from the user's point of view, and any API keys or accounts it needs. A short screen recording of the manual process you want automated is worth more than a long brief.
