Keywords and Websites

Keywords And Websites reads the address in a supported browser. Curbox shows a warning screen when the address matches a configured keyword.

Supported browsers

Curbox supports these browsers:

• Google Chrome
• Brave
• Firefox
• IronFox
• Firefox Focus
• IceRaven
• Fennec
• Vivaldi
• Opera
• Cromite
• Vanadium on GrapheneOS

Note

This reducer does not block a website in an unsupported browser. Use App Pause to control an unsupported browser.

Developers can add a browser rule to the Curbox project.

Keyword group controls

Control	Function
Active Schedule	Sets the days and times when the group applies
Usage Limit	Sets the permitted use duration for matching websites during the active schedule

If Usage Limit is empty, Curbox blocks matching websites for the complete active schedule.

Example: A group is active from 9:00 AM to 5:00 PM. An empty limit blocks each match immediately. A 15-minute limit permits 15 minutes of use before Curbox blocks the matches.

Create a keyword group

Tap the plus button to create a keyword group.

1. Open Keywords And Websites Tap Reducers. Then, tap Keywords And Websites.

2. Create a group Tap the + button.

3. Enter a group name Enter a short name that identifies the websites.

4. Add keywords Enter one domain, path, word, wildcard pattern, or regular expression in each entry. See Keyword syntax.

5. Set the active schedule Tap Active Schedule. Select the days and times when the group applies.

6. Set a usage limit (optional) Tap Usage Limit. Enter the permitted use duration.

7. Configure the warning screen (optional) Tap Configure Warning Screen. Configure the action that is necessary to continue. Read Unlock Challenges for all options.

8. Save the group Tap Done. Curbox activates the group.

Tip

You can import a prepared list from the Curbox website packs repository.

Use a keyword in multiple groups

You can put the same keyword in multiple groups. This lets you use different limits at different times.

The active schedules for the shared keyword must not overlap. If they overlap, Curbox shows a warning. Change one schedule before you activate both groups.

Keyword syntax

Select the least complex syntax that meets your requirement.

Block a complete website

Enter the domain:

youtube.com
reddit.com
twitter.com

Do not include https:// or www.. Curbox normalizes these parts before it checks the address.

Block one website section

Enter a domain and a path:

youtube.com/shorts
instagram.com/reels
reddit.com/r/gaming

youtube.com/shorts blocks the Shorts section. It does not block other YouTube paths.

Block a path on all websites

Start the entry with /:

/shorts
/reels
/reel

For example, /shorts matches that path on each website.

Use a wildcard

Use * to match zero or more characters:

*.reddit.com
youtube.com/watch*

*.reddit.com matches Reddit subdomains. youtube.com/watch* matches YouTube watch addresses with different query values.

Use ? to match one character.

Match a word in a domain

Enter a word without a period or slash:

youtube

This entry matches domains such as youtube.com and youtube.co.uk. It does not match the page content.

Use a regular expression

Start a regular expression with r::

r:(?:shorts|reels|reel)

Use this syntax only when the other keyword types cannot make the required match.

Caution

Curbox skips a regular expression that has invalid syntax. Test the expression before you add it to a group.

Import keywords from a file

Create a text file with one keyword on each line:

youtube.com/shorts
instagram.com/reels
/reel
tiktok.com

Curbox ignores empty lines and duplicate entries.

1. Open the keyword group Open the group that must receive the entries.

2. Open the group menu Tap the menu in the upper-right corner.

3. Import the file Tap Import. Select the text file.

Correct common errors

Error	Correction
The entry contains https:// or www.	Remove these parts. Enter youtube.com.
The entry is too broad, such as com	Add a specific domain or path.
The entry contains one complete video address	Remove the video identifier to match the complete section.
A regular expression does not match	Check its syntax and test it again.

Quick reference

Requirement	Entry
Block a complete website	youtube.com
Block one section	youtube.com/shorts
Block a path on all websites	/shorts
Block all subdomains	*.youtube.com
Match a domain word	youtube
Use a regular expression	r:(?:shorts|reels)