SGF Editor Online

An online SGF editor designed for Go players, editors, and researchers to edit, validate, and export SGF files without local software.

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Total Calculations Run

< 15ms

Browser Execution Speed

100%

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4.9 / 5.0

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About This Tool

SGF Editor Online is a browser-based tool for editing and validating SGF files used in Go game records. It enables editing of move trees and variations and exports both SGF and JSON representations for downstream processing.
The tool is designed for Go clubs, researchers, and tournament organizers who need rapid edits, reproducible formats, and easy sharing without installing software.
Conceptually, SGF is treated as a hierarchical move tree; the editor validates syntax, preserves node-level properties, and exposes import/export workflows that maintain structure, properties, and variations.

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How to Use

Paste SGF text or upload an SGF file
Run parsing and validation to build the move tree
Inspect results: syntax reports and the node tree
Edit moves or properties and re-validate
Export SGF or JSON for integration

Frequently Asked Questions

Find Quick Answers

What formats are supported?

The tool supports the standard SGF grammar used for Go records, including nested variations and common properties; it validates syntax, structure, and required properties to ensure interoperability.

Can I export JSON?

Yes. In addition to SGF text, the tool exports a structured JSON representation of the move tree and properties, enabling programmatic processing and integration with other workflows.

Is collaboration or versioning available?

The platform focuses on editing and data interchange; collaboration can be achieved by sharing SGF/JSON exports or integrating with external version control, but real-time multi-user editing is not built-in.

What about large SGF files?

The parser handles typical SGFs efficiently, but extremely large files may trigger higher memory usage; partial parsing and chunked imports can help mitigate performance issues.

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