GoLocale
Automatically redirects URLs to their preferred language equivalents.
Function
- Detects URLs in source languages and redirects to target language versions when available
- Configurable for any language pair through the
LANGUAGE_CONFIG object
- Verifies the target language version exists before redirecting
- Shows notification when redirects happen
How It Works
- Detects URLs with language codes in various formats (paths, subdomains, parameters)
- Generates candidate URLs using multiple strategies:
- Replace existing language codes in paths (e.g.,
/es/ → /ca/)
- Replace subdomain language codes (e.g.,
es.site.com → ca.site.com)
- Inject language codes into paths (e.g.,
/page → /ca/page)
- Inject language subdomains (e.g.,
site.com → ca.site.com)
- Add language parameters (e.g.,
?lang=ca, ?hl=ca)
- Tests each candidate URL to verify it exists and is in the target language
- Redirects to the first working candidate
- Shows notification with option to disable redirects for the domain
Configuration
Edit the LANGUAGE_CONFIG object to set your preferred languages:
const LANGUAGE_CONFIG = {
targetLang: "ca", // Primary target language (ISO code)
altLang: "va" // Alternative target language (optional)
};
Examples
With default Catalan configuration:
Original: https://example.com/es/products
Redirected to: https://example.com/ca/products
Original: https://en.wikipedia.org/wiki/Barcelona
Redirected to: https://ca.wikipedia.org/wiki/Barcelona
For other languages, just change the configuration:
// French configuration
const LANGUAGE_CONFIG = {
targetLang: "fr",
altLang: null
};
Installation
- Install a userscript manager (Tampermonkey, Greasemonkey, etc.)
- Install GoLocale
- Configure your preferred target language(s) if different from the default
- Browse websites with multiple language versions
Features
- Smart detection: Uses both HTML lang attributes and content analysis
- Multiple strategies: Tries various URL patterns to find language versions
- User control: Easy enable/disable per domain
- Non-intrusive: Only redirects when target language content is confirmed
- Configurable: Works with any language pair
License
AGPL-3.0-or-later License
