Thunderbird Add-on

Calendar Annual View

See your complete year at a glance with compact layouts, calendar filters, and theme-aware styling built for Thunderbird.

Open Dummy Demo Open Google Demo Install Add-on Source Code
Calendar Annual View screenshot

Full-Year Calendar in Thunderbird

Get a true annual calendar overview in Thunderbird, then scroll naturally into past or future years.

Five Practical Year View Modes

Switch between compact, day-aligned, 4-week, 2-week, and 1-week structures to match scheduling, vacation, or project planning.

Calendar Filters That Save Time

Filter by calendar, all-day behavior, and event duration so important appointments stand out fast.

Readable in Light and Dark Themes

Enjoy a clean, high-contrast Thunderbird add-on interface that keeps calendar colors easy to scan.

Five views in light and dark mode

Compact linear view screenshot Compact linear layout (light mode) Compact linear view dark mode screenshot Compact linear layout (dark mode) Day-aligned view screenshot Day-aligned layout (light mode) Day-aligned view dark mode screenshot Day-aligned layout (dark mode) 4-week view screenshot 4-week layout (light mode) 4-week view dark mode screenshot 4-week layout (dark mode) 2-week view screenshot 2-week layout (light mode) 2-week view dark mode screenshot 2-week layout (dark mode) 1-week view screenshot 1-week layout (light mode) 1-week view dark mode screenshot 1-week layout (dark mode)

Try it right here

Interactive demo using dummy data. Scroll, change year, and switch modes directly in this page.

Open Full Screen Demo

Privacy

The web app has no backend and no database. Google calendars are read directly from your browser via the Google Calendar API, and uploaded .ics files and settings are stored only locally in your browser (localStorage and IndexedDB). Use the “Clear all local data” button in the app’s options sidebar to remove everything at any time.