fenshot / Chess book diagram to FEN

Chess book diagram to FEN

Every chess book is full of positions the author wants you to explore, and setting each one up is why most of us skim instead. Photograph the diagram, paste it here, and explore the position with an engine in seconds.

Try it now — paste your image →

How readers use it

Keep your phone or a browser tab next to the book. Each time a diagram matters, photograph it (or screenshot the PDF page), paste, and the position is live: check the author's line against the engine, wander into sidelines, or save the FEN into your notes.

PDFs and e-books too

For digital books, a plain screenshot of the diagram is even cleaner than a photo. Crop roughly around the board; fenshot finds the board inside the image on its own.

Building a study file

Copy each scanned FEN into your notes, a Lichess study, or a spreadsheet, and a chapter of positions becomes a personal training set. The FEN text format is understood by every chess tool, so the collection stays useful forever.

Free, open source, local

No account and no upload: the recognition happens in your browser. The project is MIT-licensed open source; the code and the model are public.