Deck Centerer

Install from anki web

Remembers the last reviewed deck and automatically scrolls to it in Anki’s Deck Browser, with an optional temporary green outline highlight for quick visual confirmation.
This add-on pairs well with Review Hotmouse Plus Overview.

Features

• Remembers the current deck ID and name when entering review or overview.
• Auto-scrolls to that deck on Deck Browser render and when the app opens.
• Optional green outline highlight around the target row (off by default, toggleable in settings).
• Targets the exact saved deck on current Anki builds by deck ID, then falls back to name matching for older layouts.
• Avoids viewport jumps while you expand or collapse deck tree nodes.
• Configurable retry interval (milliseconds) and maximum tries.
• Sanitizes out-of-range or malformed config values instead of crashing on bad metadata.
• Built-in Config dialog with a “Reset to defaults” button.
• Cross-version UI compatibility (PyQt5/PyQt6-safe settings dialog handlers).

Requirements

• Anki 2.1+ (tested on Anki 25.09.2 with Qt 6.9.2 / PyQt 6.9.1).
• Desktop OS supported by Anki (tested on Linux; Manjaro KDE).

Installation

From source (manual)

1. Open Anki → Tools → Add-ons → Open Add-ons Folder.
2. Create a folder named Deck-Centerer (or your preferred folder name).
3. Copy the add-on source files into it. If you are copying from a local checkout, skip meta.json so Anki creates fresh per-user metadata.
4. Restart Anki.

Updating

• Replace files in the same folder, then restart Anki.

Usage

• Open the Deck Browser (press D) or start Anki; the deck list will auto-scroll to the last reviewed deck.
• If no deck has been remembered yet, the add-on stays idle and does not schedule retry loops.
• If enabled, a temporary green outline will briefly highlight the deck row. The default is off.

Settings

Open Anki → Tools → Add-ons → select “Deck Centerer” → Config.

Available options:

• Center on scroll (boolean): If enabled, centers the target row; otherwise scrolls it just into view.
• Show green outline highlight (boolean, default false): Toggle the temporary green outline around the found row.
• Retry interval (ms) (integer): Delay between selection attempts after render.
• Max tries (integer): Maximum number of selection attempts.
• Reset to defaults: Restores shipped defaults (also clears remembered last deck id/name).

Support

If you find this add-on useful, please consider supporting its development:

Changelog

3.0.1 (2026-07-07)

Added

• Added checkbox for "Center parent subdeck on expand/collapse" in the settings config UI.

Fixed

• Fixed expand/collapse reload flash and page jumping to top by intercepting and redirecting window.scrollTo synchronously during reload page cycles.
• Optimized performance by removing redundant mouse/pointer events and adding debouncing to toggle signals.

3.0.0 (2026-07-07)

Added

• Support tab in settings config interface featuring Ko-fi integration and UPI/BTC/ETH donation addresses.
• Auto-open settings dialog showing the Support tab once when the add-on is newly installed or updated.

Changed

• Restructured core source files into the addon/ subdirectory.
• Updated make_ankiaddon.py and bump.py to match the new package structure.

Fixed

• Fixed subdeck expand/collapse clicks on plus, minus, and arrow symbols triggering unwanted deck centering by matching inline onclick attributes and symbol strings.

2026-03-07

Changed

• Prefer exact deck-ID targeting on current Anki Deck Browser markup before falling back to deck-name matching.
• Narrow the expand/collapse skip guard so normal row navigation and selection no longer suppress auto-scroll.

Fixed

• Fix wrong deck focusing when multiple subdecks share the same leaf name and the first matching name appeared earlier in the list.
• Stop scheduling repeated scroll retries when no deck has been remembered yet.
• Clamp and sanitize malformed config values loaded from metadata.

Defaults

• Change the temporary green outline highlight to be disabled by default.

2025-11-03

Added

• Add a persistent “skip” guard that activates on deck tree expand/collapse via mouse, touch, or keyboard, preventing auto-scroll during these interactions in the Deck Browser.
• Add a MutationObserver for aria-expanded changes to catch programmatic toggles that don’t originate from direct user clicks or key presses, ensuring no unintended scroll on child subdeck expansion/collapse.
• Add a lightweight persistence of the skip window across re-renders using a small JS bridge and storage so the guard reliably survives Deck Browser DOM refreshes.

Changed

• Change the scrolling script to early-return when the skip guard is active, short-circuiting retries to avoid any viewport jump while users are expanding or collapsing deck nodes.
• Tighten the deck row target lookup while keeping existing id/name fallbacks, maintaining compatibility with current behavior that scrolls to the last reviewed deck when appropriate.

Fixed

• Fix unintended auto-scroll that occurred after expanding or collapsing parent and child subdecks in the Deck Browser by gating the behavior behind the new skip guard and timing window.

2025-10-30

• Initial release: remember the last reviewed deck and auto-scroll to it on Deck Browser render or app start, with optional highlight and configurable timing/retry behavior.