Dev tools · alternatives · 2026

24 alternatives to Go Struct to JSON Converter

Instantly turn Go structs into AI-mocked JSON

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   A fast JSON library for Go▲119

   Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json

   2021 · github.com · its alternatives →

2. 2
   ffjson: faster json serialization in Go▲83

   2014 · journal.paul.querna.org · its alternatives →

3. 3
   Gojay – Performant JSON encoder/decoder for Golang▲153

   high performance JSON encoder/decoder with stream API for Golang - GitHub - francoispqt/gojay: high performance JSON encoder/decoder with stream API for Golang

   2018 · github.com · its alternatives →

4. 4
   Faker – Struct Data Fake Generator in Go▲34

   Go (Golang) Fake Data Generator for Struct. [Notes]This repository is archived, moved to the new repository https://github.com/go-faker/faker - bxcodec/faker

   2019 · github.com · its alternatives →

5. 5
   fastjson - Fast JSON Parsing for Go▲20

   Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection - valyala/fastjson

   2018 · github.com · its alternatives →

6. 6
   Jason – A new JSON Library for Go▲106

   Easy-to-use JSON Library for Go. Contribute to antonholmquist/jason development by creating an account on GitHub.

   2014 · github.com · its alternatives →

7. 7GJ
   Generate JSON mock data for testing/initial app development▲103

   Easily create complex JSON data structures using intuitive templates.

   2023 · jsongenerator.io · its alternatives →

8. 8
   Generate JSON▲77

   AI-generated dummy JSON - deploy in seconds

   2023 · jsonviewer.stack.hu · its alternatives →

9. 9
   Mock Turtle▲72

   GUI approach to generating realistic mock JSON data

   2022 · mockturtle.net · its alternatives →

10. 10
    fastgron: A JSON to GRON Converter That's 40 Times Faster Than Gron▲23

    Hello HN! I want to introduce fastgron, my new project. fastgron is a JSON to GRON converter, built to be incredibly fast – it's 40 times faster than Gron. GRON is a tool for making JSON greppable, but it can slow down with larger files. With fastgron, even a 200MB JSON file can be converted in just 1 second. Key features include streaming conversion for memory efficiency and an optimized path reconstruction for faster operations. It leverages C++ and the simdjson and fast_io libraries for speed. I welcome all feedback, suggestions, or questions. Thank you!

    2023 · github.com · its alternatives →

11. 11
    Structura▲100

    Visualize and edit JSON like Lego blocks

    2025 · structura-json.netlify.app · its alternatives →

12. 12
    Weird JSON superset with BigInt, Infinity, TypedArray etc▲67

    the JS/Node.JS library for encoding complex and unconventional data structures. Support for BigInts, TypedArrays, null, undefined, and Symbol. Multiple flavors available. - DO-SAY-GO/WeirdJSON

    2020 · github.com · its alternatives →

13. 13
    Free Json AI Prompt Generator▲6

    Smart JSON Prompts, Made Simple

    2025 · teamcamp.app · its alternatives →

14. 14
    33% Memory Reduction by Reordering Struct Fields▲19

    Learn Go (Golang) by writing real code in this interactive course. Practice structs, interfaces, errors, concurrency, and idiomatic backend patterns.

    2020 · qvault.io · its alternatives →

15. 15
    Convert JSONL to JSON Online▲12

    Free json converter tool

    2025 · merge-json-files.com · its alternatives →

16. 16
    Python JSON library in Rust, faster than ujson▲40

    Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy - ijl/orjson

    2018 · github.com · its alternatives →

17. 17
    JSONBason▲15

    I've been at it again, just sharing my simple JSON data inspection tool, love webdev and single page apps, this one took 4 days and was a lot of fun. The code is not obfuscated so you can inspect it and see how it works (very simple, server side is even more simple) Pretty much just do a POST of your JSON data from within your code and it will convert it into a basic table for instant search and sort. Made with love for the fun of it, no ads, no paid anything, it's totally free. Please only send in sanitized/test data only, this is meant to help make webdev a bit easier and more fun.…

    2025 · jsonbason.com · its alternatives →

18. 18
    Quicktype – it's like Uber, but for JSON▲34

    Millions of developers have used quicktype to generate ten billion lines of typesafe models, serializers, and validators from JSON, JSON Schema, and GraphQL in TypeScript, Python, Swift, C#, Go, Rust, Kotlin, Java, C++, Zod and more. Use it in the browser, from the command line, or give it to your A

    2017 · quicktype.io · its alternatives →

19. 19
    PJSON.live▲15

    Format, validate & convert json to typescript instantly

    Nov 2025 · pjson.live · its alternatives →

20. 20
    Gojay – highly performant JSON encoder/decoder for Golang▲11

    high performance JSON encoder/decoder with stream API for Golang - GitHub - francoispqt/gojay: high performance JSON encoder/decoder with stream API for Golang

    2018 · github.com · its alternatives →

21. 21
    Convert JSON to JSONL Online▲7

    Free Online JSON to JSONL Converter Tool

    2025 · merge-json-files.com · its alternatives →

22. 22
    TricretParse▲6

    AI-powered natural-language to structured JSON converter

    2025 · prompt-2-json.vercel.app · its alternatives →

23. 23
    EasyMock▲1

    Instant JSON to Swift Structs

    2025 · apps.apple.com · its alternatives →

24. 24
    Wrote a JSON parser from scratch in go▲22

    First time ever working on something like this, check it out

    2024 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →