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Json to golang struct with json tags online

Generate Go structs from JSON · json tags added automatically

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Generation Options
Input JSONJSON
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Generated resultGo
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generate go struct from api json response

Generate go struct from api json response. This tool handles this and related scenarios — including json to go struct with bson tags for mongodb and graphql json response to go struct generator — entirely in your browser with no signup or file upload.

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Overview

The JSON → Go Struct generator turns sample JSON into Go struct definitions and adds json tags automatically so the standard-library encoding/json package can serialise and deserialise correctly. It splits nested objects into separate structs and merges array element types, which is a handy helper for Go developers integrating with REST APIs or microservice messaging.

How to Use This Tool

Step 1 — paste sample JSON on the left, or click "Sample" to load an example. Step 2 — fill in the package name (for example model) and the root struct name (default RootObject). Step 3 — tick "Add json tag" to generate json:"field_name" tags plus optional omitempty. Step 4 — the right panel shows the generated Go code in real time; copy it or download as a .go file. Nested objects are split into multiple standalone structs with sensible naming.

Common Use Cases

Go back-end developers generate request / response models from third-party API examples; microservices define message structs quickly; Kubernetes controllers turn ConfigMap or CRD JSON samples into Go types; Swagger examples are imported to auto-generate Go types; database migration tools use JSON configs together with json.Unmarshal.

Technical Details

Strings map to string, integers to int, floats to float64, booleans to bool, arrays to []T, and null or mixed types to interface{}. Struct names are PascalCased while field names keep the JSON casing. The json tag includes omitempty by default so zero values are omitted during serialisation. Field names with invalid Go identifier characters (such as hyphens or dots) are converted to underscores. Generated code contains no import statements; add them for any extra packages you use.

Privacy & Security

Struct generation runs entirely in your browser and requires no network requests. The JSON you enter is never uploaded, so you can safely process business-sensitive API data.

References & Standards

Related Tools

JSON FormatterFormat / minify / validate JSON — configurable indent, precise error location, one-click copyJSON ⇄ XMLTwo-way conversion between JSON and XMLJSON ⇄ YAMLTwo-way conversion between JSON and YAMLJSON ⇄ CSVTwo-way conversion between JSON arrays and CSVJSON → TypeScriptGenerate TypeScript interface / type declarations from JSON

Frequently Asked Questions

How do I use this tool to json to golang struct with json tags online?

Paste your input into the editor, choose any options, and the result appears instantly. All processing runs locally in your browser.

Is my data safe when using this tool online?

Yes. Every operation runs entirely in your browser. Your data is never uploaded to any server or written to any log.

Is this tool completely free to use?

Yes. This tool is 100% free with no sign-up, no account, no ads and no usage limits.

What formats or platforms support go struct from api json response?

The tool supports all common formats for this category and works in any modern browser on desktop and mobile. See the editor for live results.

Can I also use this tool to json to go struct with pointer for optional fields?

Yes. Paste your content, choose the relevant options, and the result appears instantly. This and all related features run locally in your browser with no file upload.

How do I convert nested json to golang struct offline using this tool?

Enter or paste your data into the editor, adjust any available options, and the output is generated instantly. All processing is done on your device — nothing is uploaded.