Tabletop Simulator (TTS) is the standard tool for online board game playtesting before you have physical prototypes. The TTS Deck Editor takes your card images and packages them as TTS-compatible deck sheets so you can drag them straight into a TTS mod or session.
What this page helps you do
Upload your card images.
Generate the TTS-format deck sheet.
Get the result into Tabletop Simulator.
Before you start
You need Tabletop Simulator installed (it's a paid app on Steam).
You need a basic understanding of TTS's deck-loading flow, the tool prepares the file; you load it in TTS yourself.
Open the tool
Upload your card images
Drag in or upload all your card images. Same rules as P&P Cards Layout:
Same size for all cards.
High resolution (300 DPI at intended printed size).
Front and back images separately (TTS wants them).
Generate
The tool packs your images into the TTS deck sheet format, a single large image that TTS expects, with all cards arranged in a 10×7 grid (or whatever standard layout TTS supports).
You can configure:
Card backs: pick the back image for the deck.
Hidden info on backs: TTS supports hidden info on a card's back; configure if your game uses it.
Card naming: pick how cards are labeled when picked up in TTS.
Click Export. The tool produces:
The deck-sheet image.
A small JSON or .txt file with TTS metadata (card count, name, etc.).
Load in TTS
In Tabletop Simulator:
Save the deck-sheet image somewhere on your computer.
Host the image at a public URL (TTS pulls from URLs, not local files by default). Common hosts: Imgur, Steam Workshop assets, your own server.
In TTS, use the Custom Deck menu and paste the image URL.
Configure card count, dimensions, and back image as the export metadata indicates.
The deck appears in your TTS session, ready to shuffle and deal.
For first-time TTS users, the official TTS documentation has a "Custom Decks" guide worth reading once.
Tips & common questions
Why does TTS need a URL instead of a local file? TTS sessions are multiplayer, the asset has to be accessible to every player. URLs are the universal way to make that happen.
Can I host the image privately? Yes, any URL TTS can fetch works. Some designers use private cloud storage; others use Imgur with a privacy setting. Check that the URL is reachable without sign-in for your playtesters.
My cards look pixelated in TTS. Re-export at higher resolution. TTS scales down for performance; a high-resolution source ensures detail at scale.
Can I update the deck after sharing it? Yes, re-export, replace the image at the same URL. TTS pulls fresh when the session reloads.
Tabletop Simulator deck quotas / limits? TTS itself has limits on deck-sheet image size. The tool exports within TTS's accepted ranges, but very large card sets may need to be split across multiple deck sheets.