Curbox Browser

Break the doomscroll.

A browser extension that shows where your time actually goes online. It blocks the sites and feeds that keep pulling you back, and when you hit one it puts a calm breathing screen in the way instead of a hard wall. There is also a Curbox app for Android if you want the same thing on your phone.

Discord · Donate · Android app · Instagram

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Features

Usage Stats

See where your time actually goes. Curbox only counts a tab while you are looking at it, so something left open in the background never inflates your numbers. You get today's total at the top, a weekly bar graph you can scroll back through, and a list of sites sorted by time spent. Open any site and it breaks down by path, so youtube.com splits into the videos and the /shorts that quietly ate your afternoon.

Website Blocker

Put websites into groups and combine the same controls used by the Android app:

• Active hours. Choose all day, one daily schedule, or different ranges by weekday.
• Usage limits. Count only browsing inside those active hours; a zero-minute limit blocks the whole window.
• On each open. Curbox stops you once when you enter a group, then asks again after you leave and return.

Keyword Blocker

Block by URL pattern instead of a whole domain, so you can kill the feed and keep the tool. A group can hold keywords like:

• youtube.com/shorts for one section of a site
• /reels for a path on any site
• *.reddit.com for every subdomain
• r:shorts|reels for a raw regex when you need it

Warning Screen

This is what you hit when you try to get past a block. Instead of a flat wall there is a breathing overlay that asks you to slow down for a second. You decide how hard it pushes back:

• Never unlock. The block holds and there is no way through.
• Require effort. Type a sentence, write down why you want in, or solve an adaptive math set.
• Wait to unlock. A timer runs before the page will open.

You can add your own message, require completed focus time first, and cap how many times you are allowed through, so it stays a pause and not a punishment.

Encrypted Sync

Sync browser settings, focus groups and sessions, and four weeks of browsing usage through the same end-to-end encrypted Curbox account used by Android. Device filters, pairing codes, explicit manual sync, deletions, and account-local device identities follow the Android sync contract.

Installation

Curbox is not on the browser stores yet, so you load it yourself. It takes about two minutes.

npm install        # grab dependencies
npm run build      # Chromium  →  .output/chrome-mv3
npm run build:firefox  # Firefox  →  .output/firefox-mv2

For Chrome, Brave, and other Chromium browsers

1. Run npm install then npm run build.
2. Open your extensions page (for example chrome://extensions).
3. Turn on Developer mode.
4. Click Load unpacked and pick the .output/chrome-mv3 folder.

For Firefox

1. Run npm install then npm run build:firefox.
2. Open about:debugging and click This Firefox.
3. Click Load Temporary Add-on and pick any file inside .output/firefox-mv2.

Temporary add-ons in Firefox are removed when you restart the browser.

Contributing

Issues, ideas, and pull requests are all welcome. See CONTRIBUTING.md to get set up.

Made by Nethical