BOOKSELLER CHECKER
Will your save have Cave Jelly?
Enter your save ID to see both Bookseller dates and the jelly offered on each visit.
Your two Bookseller visits will appear here.
Where do I find my Save ID?
On Windows, open:C:\Users\YOUR_WINDOWS_USERNAME\AppData\Roaming\StardewValley\Saves
Open your farm's folder. Its main save file has a name such asMyFarm_443077842; the digits after the final underscore are the Save ID. You can select that file above or enter those digits manually.
Do not select SaveGameInfo.
THE SHORT VERSION
A direct answer from the game's own rules
The checker recreates Stardew Valley's Bookseller visit selection and daily shop randomization. It predicts the two visits first, then checks which jelly the trade slot receives on each date.
Everything runs in your browser. Your Save ID is not uploaded or stored.
FOLLOW THE ROUTE