Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
Log in
Preview of Kumo Tabs

Kumo Tabs by Golga

A pixel-art new tab with a clock, live weather and animated Japanese landscapes that change with the seasons and time of day. It also watches your own web servers: uptime, latency, crons and outdated PHP, database or npm versions.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
A pixel-art new tab with a clock, live weather and animated Japanese landscapes that change with the seasons and time of day. It also watches your own web servers: uptime, latency, crons and outdated PHP, database or npm versions.

A NEW TAB WORTH OPENING
• Hand-made pixel-art backgrounds: a Sakura pagoda by a lake, or Mount Fuji with a torii, in four seasons, by day and by night.
• Gentle ambient motion: ripples on the water, twinkling stars, flickering lanterns, drifting petals, leaves or snow, birds by day and shooting stars at night.
• Weather effects: heavy or light rain, snow, sun or falling cherry petals, or Live mode, which follows the real weather and the real sunrise and sunset of your town.
• Your own photos: upload several pictures and they play as a random slideshow with smooth crossfades.
• Also available: solid colours, gradients, an image URL or a random photo.
• Widgets you can place anywhere on the page: greeting, clock, search bar and weather (temperature, feels-like, humidity, wind and a 3- or 5-day forecast).
• Dark or light theme, accent colour, fonts, text shadow, module cards, size, background dimming and blur.

SERVER MONITORING
• Watch as many web servers as you like, each with its own API token.
• Each card shows whether the server is up, degraded or down, its response time, application build, PHP, database and web server versions, disk, memory, load and cron jobs.
• Update checks compare every reported tool and package with its official releases and flag end-of-life branches, new LTS versions, patches and major upgrades.
• Results are cached, so a new tab shows the board instantly and servers are not called more often than the interval you choose.

Your server only needs a small endpoint that answers a GET request with a JSON report. The token is sent in a header, and the server stores only its SHA-256 hash: Kumo Tabs generates the token and shows the hash to copy.

PRIVACY
• No account, no analytics, no tracking. Everything stays in your browser's local storage, and you can export or import it as a backup file.
• Access to each server is requested only when you add it.
• The only other calls: Open-Meteo for the weather (the coordinates of the town you choose, only if you set one), endoflife.date, npm and Packagist for version checks, and Picsum if you pick random photos.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Optional permissions:

  • Access your data for endoflife.date
  • Access your data for registry.npmjs.org
  • Access your data for repo.packagist.org

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
  • Copy add-on ID
Version
1.2.0
Size
820.64 KB
Last updated
12 days ago (Oct 25, 2026)
Related Categories
  • Web Development
  • Appearance
  • Alerts & Updates
License
All Rights Reserved
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.