Squid Thing

• Must be logged into Squid Ring or SplatNet for functionality
• Chrome extension
  • Install via the Chrome web store page
• Firefox extension
  • Install via the Firefox add-ons page
• Not affiliated with Nintendo

Features

• Provides convenient access to Squid Ring and SplatNet stage rotation info via くコ:彡 button
• Localization of Squid Ring and SplatNet Splatoon stage names and ranked battle modes
  • English (NOA)
  • German
  • Spanish
  • French (NOE)
  • Italian
• Displays region-specific Splatfest information, based on your NNID
• Converts stage rotation times to local time and reformats it for easier reading: current stages and starting in x hours and x minutes
  • original Squid Ring (JP) time format
    • 8/17 11:00 ~ 8/17 15:00
  • original SplatNet (EN)
    • 10/05 at 11:00 p.m. (PDT) ~ 10/06 at 3:00 a.m. (PDT)

Screenshots

In other words, it adds this button:

And handles Splatfest display for your region:

Limitations

• Stage rotation information will be unavailable during Japan's Splatfests
  • As of the ボケ vs ツッコミ (2015/9/12 12:00 ～ 9/13 12:00) JP Splatfest, this is no longer true
    • Non-JP Splatfest information is now fully supported!
  • Squid Ring stage rotation information now appears to be personalized based on NNID
    • North America NNID displays NA stage rotation during JP Splatfest, rather than the notice pictured below

Is it safe to use? How does it work?

• The Google Chrome extension fetches the schedules page directly from Squid Ring as an iframe and applies content script overrides
• localize.js loops through the text on the schedules page and substitutes localized text if applicable
• styles.css overrides the original style sheet in order to provide the UI for the pop-up button
• notloggedin.js simply alerts the user when they are not logged into Squid Ring
• The Mozilla Firefox extension functions in a similar manner, but places the UI in a native pop-up without the need for an intermediate iframe

Credits

• Inkipedia for stage/mode localization
• Reddit user PommePatate, for additional French localization