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Alternatives

Products that do what JsonFixer does

Fix malformed JSON from LLMs, APIs, and config files.

  1. 1IM

    2024 · prakhar897.github.io

  2. 2

    Fix broken AI JSON and 6 more JSON tools, all in-browser

    May 2026 · jsonkit.co

  3. 3AJ

    Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…

    2025 · github.com

  4. 4

    Useful JSON online tools

    2022

  5. 5JP
  6. 6

    A web tool that validates and format JSON objects

    2021

  7. 7CL

    2018 · github.com

  8. 8RJ

    2021 · repair-json.vercel.app

  9. 9

    A one-stop-shop tool for JSON processing on Mac

    2022

  10. 10RL

    We've been building data pipelines that scrape websites and extract structured data for a while now. If you've done this, you know the drill: you write CSS selectors, the site changes its layout, everything breaks at 2am, and you spend your morning rewriting parsers. LLMs seemed like the obvious fix — just throw the HTML at GPT and ask for JSON. Except in practice, it's more painful than that: - Raw HTML is full of nav bars, footers, and tracking junk that eats your token budget. A typical product page is 80% noise. - LLMs return malformed JSON more often than you'd expect, especially with…

    Mar 2026 · github.com

  11. 11

    One-click repair for broken JSON from AI models

    Jul 2026 · aijsonmedic.com

  12. 12

    Format, convert, repair, compare JSON in your browser

    Jul 2026 · mackan.eu

  13. 13

    Messy AI output → clean, valid, explained JSON

    19d ago · recast-indol.vercel.app

  14. 14JD

    2015 · json-diff.com

  15. 15

    Free online json formatter, validator & editor tool

    Oct 2025

  16. 16

    Free JSON toolkit — format, validate, diff & repair

    Jul 2026 · freejsonparser.com

  17. 17JA
  18. 18

    Free online json viewer, editor & validator

    Oct 2025

  19. 19

    Fix, format & visualize JSON — instantly.

    Jan 2026 · jsonmaster.com

  20. 20

    Smart JSON formatter: auto-fix, URL decode & copy nodes

    May 2026 · dev-toolsonline.com

  21. 21

    Edit, format, diff, and repair JSON — all in your browser.

    Jun 2026 · mzeeshan.me

  22. 22

    JSON repair API for broken LLM outputs. Sub-50ms streaming.

    Mar 2026 · shim.so

  23. 23

    Format, diff & fix JSON without uploading anything

    Feb 2026

  24. 24

    Free developer tools - JSON, passwords, encoding & more

    Oct 2025

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