Question 1

How does Rack Sabbath scan a Scrabble board?

Accepted Answer

Rack Sabbath uses computer vision (OpenCV) to detect the board in your photo, straighten it with perspective correction, and then uses AI-powered OCR to read each tile letter. The entire process runs in your browser — no images are uploaded to a server.

Question 2

Is Rack Sabbath free to use?

Accepted Answer

Yes, Rack Sabbath is completely free. No account, download, or subscription required. Just open the website and scan your board.

Question 3

What Scrabble dictionary does Rack Sabbath use?

Accepted Answer

Rack Sabbath uses the WOW24 dictionary (WGPO Official Words 2024), which tracks the NASPA Word List 2023 used by Scrabble GO in North America. It contains over 195,000 valid words.

Question 4

Does Rack Sabbath work with Scrabble Go?

Accepted Answer

Yes! You can screenshot your Scrabble Go board and upload the image to Rack Sabbath. The scanner will detect the board and read the tiles, then find the highest-scoring move you can play.

Question 5

Can I just type my Scrabble rack instead of uploading a photo?

Accepted Answer

Yes. The home page has a 'Type your rack' box where you can enter up to 7 letters (use ? for blank tiles) and instantly see every playable word from those letters, ranked by score. No photo, board, or account required.