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Chrome extension · beta

Exzellent Focus. Study without distraction.

One switch blocks the sites that pull you away. A blocked page turns into a quote, the number of distractions you have dodged today, your day streak and a breathing circle. When you must, an honest 5-minute pass lets a site through and blocks it again on its own.

Beta · not on the Chrome Web StoreWorks offline · no data leaves your browserFree
Get the beta package Install steps Privacy

What it does

  • Focus mode

    One toggle blocks a starter list (Instagram, TikTok, Facebook, X, Reddit, 9GAG) plus any site you add. Blocking uses Chrome’s declarative rules, so it works without reading your browsing.

  • Motivation page

    Instead of the blocked site: a quote, how many distractions you dodged today, your streak and a slow breathing circle. “Back to focus” closes the tab; “I really need 5 minutes” lets the site through for five minutes.

  • Study hours

    Set a daily window (overnight windows work too) and Focus mode switches on by itself. Outside the window, nothing is blocked unless you turn the switch on.

  • Stats and streaks

    Distractions dodged today and in total, and a streak of days with at least one dodge. Counted on your device only.

  • Morning splash, if you want it

    Opt in to a once-a-day page with a greeting, a quote and your number-one goal for the day. Off by default in the beta; nothing opens on install.

  • Your lists, your device

    The block list, schedule, goal and statistics live in Chrome’s extension storage on your computer. The extension makes no network requests and has no analytics.

Seen in the beta

Captured from version 0.2.0 by the automated test run in a Chromium browser on 24 October 2026, not mocked up.

The Focus popup: the Focus mode switch, three counters (dodged today, dodged total, day streak), the blocked-sites list with seven default sites and a field to add one, the study-hours schedule and the morning page switch.
The popup: one switch, the list, study hours.
The motivation page shown instead of a blocked site: the Exi elephant, a badge reading “example.com can wait”, a quote, “You've dodged 1 distraction today · 1-day focus streak”, a breathing circle and two buttons: Back to focus, and I really need 5 minutes.
What a blocked site turns into.

Install the beta (Chrome, developer mode)

Until the extension is on the Chrome Web Store, it installs from a downloaded folder. Chrome shows a “developer mode extensions” notice at start-up for extensions installed this way; that is expected.

  1. Download the package from the downloads page and check its SHA-256 checksum against the one listed there (certutil -hashfile file.zip SHA256 on Windows, shasum -a 256 file.zip on macOS).
  2. Unzip it into a folder you will keep (Chrome loads the extension from that folder; moving it later breaks the install).
  3. Open chrome://extensions, turn on Developer mode (top right), choose Load unpacked and pick the unzipped folder.
  4. Pin Exzellent Focus from the puzzle-piece menu, open it and turn on Focus mode. The first time, Chrome asks for permission to act on the sites in your block list.
  5. Try opening one of the blocked sites. You should land on the motivation page.
Platforms. Built for Google Chrome (Manifest V3). Other Chromium browsers may work; only Chrome is tested. There is no Firefox, Safari or mobile version.

Permissions, and why

PermissionUsed for
storageYour block list, schedule, goal and statistics, on your device.
declarativeNetRequestRedirecting a blocked site’s main page to the motivation page. Chrome evaluates these rules itself; the extension does not see your traffic.
alarmsChecking the study-hours window once a minute and ending a 5-minute pass.
Site access, asked per siteChrome requires permission for each site a redirect rule applies to. The beta asks when you turn Focus mode on and when you add a site; the earlier prototype asked for all sites at install, which the beta no longer does.

Status

  • Source hardened and packaged from the owner’s prototype (version 0.2.0 of the beta). An automated test loads it in a Chromium browser and exercises blocking, the dodge count, the 5-minute pass and the schedule; the test and its results are in the repository.
  • Not published. The package appears on the downloads page only after the owner approves a release. A Chrome Web Store listing needs a developer account and a review; that is a later step.