TheRedWarn team is currently in the process of renaming toUltraviolet. Some documentation pages are still in the process of being written/transferred. Read the announcementhere.

You take full responsibility for any actions taken using Ultraviolet. You must read andunderstand all relevantWikipedia policies and abide by them when using this tool; failure to do so may result in beingblocked from editing.

About –Features –Install or Remove –Documentation –Talk –Changelog

Ultraviolet is anopen sourcecounter-vandalismuser script written inTypeScript and is used to revert problematic edits, warn and report editors, request page protection and perform other moderation and maintenance tasks.

Click here to install or remove.

There are a few reasons as to why the name "Ultraviolet" was chosen.

• On thevisible spectrum, violet is on the opposite side ofred. Further past the visible spectrum in decreasing wavelength, isultraviolet.
• At the time of deciding,WP:UV was an available shortcut.
• We wanted to retain a color in the title for easy recognition.

In addition to the script, theteam decided to take on the name10nm, the smallest wavelength of extreme ultraviolet light (10 nanometers).

And no, the "V" in "violet" is not capitalized, unlike the "W" in "Warn".

Ultraviolet is a rewritten version ofRedWarn, initially developed byUser:Ed6767. Along with the release of the new rewrite of the userscript, we've decided to rename for various reasons, documented on ourdevelopment wiki.

For a complete list of what we have so far, take a look atWikipedia:Ultraviolet/Compatibility matrix.

The team behind Ultraviolet is the same team behind RedWarn. Each person on the team contributes their own set of skills and tasks for Ultraviolet, whether it be development process, documentation writing, or community response.

• Ed6767 (talk ·contribs) – original creator of RedWarn
• Smaller patches byAwesome Aasim (talk ·contribs) andThe_creeper2007 (talk ·contribs).
• Some data (such as the reasons for speedy deletion, report reasons and others) were processed fromTwinkle's source code.

Ultraviolet is in beta, so you may face some bugs and issues. Please be willing to give your feedback if you try in order so that the developers can collect feedback on suggested features, bugs and other issues.

As of now, Ultraviolet is not perfectly backwards-compatible with RedWarn. Some features, primarily customization options, may still be missing or lacking. The current version of Ultraviolet can (and should) run alongside Twinkle to avoid any blind spots in your counter-vandalism patrolling feature set.

Want to chat with other Ultraviolet users and help contribute to the project? Join ourDiscord server or#ultraviolet^connect onLibera.

You are responsible for all edits made with Ultraviolet. You have the chance to reviewevery action you make. You are expected to have properly studiedWikipedia's policies and guidelines prior to using Ultraviolet and expected to use Ultraviolet within Wikipedia's policies and guidelines or risk beingblocked from editing.

Ultraviolet is a powerful tool, and some behaviour is strongly discouraged, including but not limited to:

• Misusing the revert or Alert on Change options to violateownership of content oredit warring policies
• Consistently misusing user warning templates
• Overuse of a single quick rollback reason, which may discourage newer editors
• Bypassing any permission level restriction (i.e., using Ultraviolet before autoconfirmed, or using restricted features before becoming extended-confirmed)
• Gaming around special permissions, such as the ability tosend mass messages

As with any semi-automated tool, whether you use rollback (tagged as "Rollback, Ultraviolet") or pseudo-rollback (tagged as "Undo, Ultraviolet") does not imply abuse; cases of abuse should be treated differently."If a tool or manual method is used to add an appropriate explanatory edit summary, then rollback may be freely used as with any other method ofreverting." However, if you do not use an appropriate edit summary in your rollback reason, you risk losing your rollback permissions.

To test out Ultraviolet's features, have a go at giving warnings toUser talk:Sandbox for user warnings. Nearly all elements are labeled with placeholders and tooltips to demonstrate the purpose of a button or text box. Once you've got the hang of it, feel free to start patrolling for vandalism onSpecial:RecentChanges.

There are multiple ways to contact members of theUltraviolet Team. While it is preferred to use thetalk page, any of the below methods may be used to contact members. Please note that certain methods, such as IRC and Discord, may take some time to receive a response. If you have a confidential issue with Ultraviolet, then please refrain from using the below methods and instead emailultraviolet.issuetoolforge.org (redwarn.issuetoolforge.org for RedWarn). You can contact team members via the following methods:

• Through theUltraviolet talk page.
• Through theUltravioletDiscord server.
• Through IRC at#redwarn-team^connect onLibera.
• Through any of the Ultraviolet team members' talk pages.
• Through any of the Ultraviolet team members' emails (usingSpecial:Email).
• Through any of the Ultraviolet team Toolforge maintainers' emails (usingtools.ultraviolettoolforge.org).

If you wish to report a bug you have experienced, please collect screenshots and logs using the instructions atWikipedia:Ultraviolet/Documentation/Troubleshooting.

If you're unable to contact any Ultraviolet team member, this may be due to a rare event where none of them are available. In most cases, a team member should be able to respond within 24 hours.

General communications about Ultraviolet on Libera should be on#redwarn^connect instead. You will be removed from #redwarn-team if you do not have any immediate concerns.

Preview	Template
This user usesUltraviolet to fight vandalism.	{{User:UBX/Ultraviolet userbox}}
This user has bothUltravioletandTwinkle, and may use them together!	{{User:UBX/UV and TW}}
This user has bothUltravioletandHuggle, and may use them together!	{{User:UBX/UV and Huggle}}
This user wishes to be chaotic and has bothUltravioletandRedWarn, and may use them together! RW	{{User:UBX/UV and RW}}

For a topicon, add{{Ultraviolet topicon}} to your userpage.

• Changelog
• Documentation

• Ultraviolet (userscript)
• Wikipedia counter-vandalism tools
• Wikipedia scripts