Dueling Book Enhancer

Customizes Dueling Book rooms, hosting defaults, Card Pools, colors, and deck sorting.

THIS TOOL IS UNOFFICIAL! I AM NOT AFFILIATED WITH DUELINGBOOK IN ANY WAY. I JUST LOVE YU-GI-OH! AND HAVE PLAYED ON DB (AND DN BEFORE IT) FOR OVER 15 YEARS. I FINALLY WANTED TO INCLUDE SOME FUNCTIONALITY THAT I'VE THOUGHT WOULD BE NICE FOR A LONG TIME. This extension adds some useful functionality to Duelingbook.com (it does nothing outside of Duelingbook.com). The features added are: 1. Rewind your replays (Beta). You can now use "Previous" or "Rewind" to go backwards while viewing replays. Additionally, checkpoints will be saved at the beginning and end of duels (and in the middle for longer duels). So if you have a match and want to jump around duels, going backwards and forwards as you review it, you now can :) NOTE: Of the features added by Dueling Book Enhancer, this one is the buggiest. It's been working well for me in testing, but inevitably some people will probably find replies it doesn't work on. If that happens, shoot me a DM the next time you see me online. IGN: Selurnipohc 2. Customize your Duel Room default settings. Don't want to have to change the room to your preferred one every time you click into the Duel Room? Want to hide some of the rooms you never see or engage with? This extension can help with that. 3. Deck Constructor remembers which Cardpool (banlist) was set when you last clicked "Save" while that deck was active. This means you could, for example, set the Cardpool to Goat or Edison, click "Save", and the next time you load that deck up in Deck Constructor it'll automatically set the correct Cardpool for you. 4. Use any of the formats available on Format Library as of September 01, 2026 (Except Edison and Goat since DB has those by default). They're disabled by default, but you can go in an enable, for example, REDU or Tengu or whatever you prefer, then these options will show up in Deck Constructor's Cardpool dropdown menu. This way you can easily deck build for your favorite formats without worrying about accidentally including a card that you're not allowed to. This functionality also works with function #2 above, so if you set a REDU Cardpool and then save a deck, the next time you enter Deck Constructor it will load the REDU cardpool for you. 5. Custom Sort button. The app allows you to edit the sorting functionality DB uses on a per-card-type basis. So for example I left the Main deck sorting how it was, but I set Synchros, Fusions, and XYZ to sort by Level/Rank primary and alphabetical afterwards. This new sort button shows up just below the current alphabetical sort button. But you could also sort by, for example, number of cards in deck. Maybe you prefer your spells to go Singles, then Doubles, than Three-ofs, with ties broken alphabetically. Well now that's super easy. Make DB sort decks the way you think they should be sorted. 6. Customize many of the visuals of DB. Tweak colors to be what you want, remove the gridlines that run along the top and bottom of the screen. Set a custom background image. alter opacity. If you mess something up, no worries, just reset to default with a single click. I now have my favorite art sitting as DB background, with the opacity set just how I like.