A worked example
1. e4 e5 2. Nf3 Nc6 gives four half-moves.
Replay a PGN main line, inspect a valid FEN position and export a board diagram.
Make a little planLoading your local workspace…
The parser validates moves; previous and next controls rebuild the selected position.
1. e4 e5 2. Nf3 Nc6 gives four half-moves.
One main-line game, at most 20,000 PGN characters and 400 half-moves. No engine analysis, move evaluation, multiplayer or variation editor. Unicode piece appearance depends on local fonts.
No. Processing runs locally in your browser. The host still receives normal requests for website pages and assets.
Use the download controls for the current tool or print from your browser. Your valid edits autosave in this browser. Export a JSON backup to move devices; see the privacy page.
No sign-up, paid API or subscription is required. Both languages use the same tools. English always opens at the root address.
Paste one PGN game and step through its main-line moves.
Open toolEdit a FEN string and validate its board and metadata.
Open toolFlip the board and adjust its colours before export.
Open toolDownload the board as SVG/PNG or save the PGN text.
Open tool