I built a local-first distraction blocker utilizing Firefox's unique MV3 capabilities (Clarity Block)
Hey everyone,
I was frustrated by website blockers that either track your data or fail to work reliably under the new Manifest V3 rules. I wanted something native to Firefox, highly reliable, and completely private.
I built Clarity Block, a website blocker and focus extension that runs completely locally.
Why it’s built for privacy and reliability:
No Telemetry: It does not harvest your browsing data. All of your blocklists, analytics, and session settings are stored entirely locally on your device.
True MV3 Blocking: It takes advantage of Firefox's unique ability to return a Promise from webRequest.onBeforeRequest. This means the extension intercepts and blocks distracting sites reliably on every single request, without relying on flaky in-memory caches that fail when the background script suspends.
Workflow Features:
Focus Sessions: Set a custom timer to stay locked in, and automatically block access to your customized list of distracting domains.
Group Management: Organize your distracting websites into distinct categories and toggle them on or off with a single click.
Advanced Controls : For those who need more, it includes advanced features like wildcard blocking (e.g., *.news.com), daily time quotas per domain, and custom redirect URLs.
Would love to hear your feedback on the frosted-glass UI!
Link: https://addons.mozilla.org/en-US/firefox/addon/clarity-block/