A modern browser extension that seamlessly converts and localizes prices on any webpage using real-time exchange rates. Zero tracking. Blazing fast.
Everything you need to navigate international storefronts without doing the math.
Powered by global CDN APIs with smart local caching — instantaneous currency swaps without redundant network calls.
100% local processing. Your data never leaves your browser. No accounts, no tracking scripts, completely open source.
Debounced MutationObservers and pre-compiled regex keep your scrolling smooth, even on infinite-scroll pages.
A fully themed popup with a sleek dark mode default and a clean Cash App-inspired light mode. Your choice.
Disable Flux on any site with a single click from the popup. Granular control over where conversions appear.
Works seamlessly on Chrome, Firefox, Edge, and any Chromium-based browser. One extension, every platform.
From install to automatic conversions in under 30 seconds.
Add Flux to your browser from the Chrome Web Store, or load it manually on Firefox and Edge.
Open the popup, pick your base and target currencies. Flux remembers your preferences.
Shop any website — prices are automatically converted in real time. No clicks needed.
Flux automatically converts prices on any website — here's a real example.
Currencies
Hover any currency to see live exchange rates.
Have questions about Flux? We've got answers.
Flux fetches live currency rates from a reliable, global CDN API. To keep your browsing experience lightning-fast and save network bandwidth, rates are cached locally in your browser's storage and updated periodically. This ensures that price conversions happen instantaneously without lag.
Yes, perfectly! Flux is optimized for modern web apps like Amazon, YouTube, and Twitter. It uses a high-performance, debounced MutationObserver together with requestAnimationFrame. It watches for changes in the DOM and converts newly loaded prices dynamically as you scroll or navigate, without affecting website performance.
Privacy is our core philosophy. Flux collects zero personal data, tracking cookies, or browsing history. All operations occur 100% locally in your browser. Your preferences (like target currencies and disabled sites) are stored locally using chrome.storage.local and never leave your device. Flux is also completely open-source, so you can inspect the code yourself.
Install Flux in seconds. Free, open source, and privacy-first.
Add to Chrome
Firefox
Edge