Alternatives

Products that do what Flatten JSON Online does

Free json flattener tool

1. 1
   Convert JSON to JSONL Online▲7

   Free Online JSON to JSONL Converter Tool

   2025

2. 2
   Convert JSONL to JSON Online▲12

   Free json converter tool

   2025

3. 3JP
   JSON Pizza – Beautify your JSON quickly▲112

   2019 · json.pizza

4. 4
   JSON Sharp▲73

   Tool for lazy developers to convert JSON to C# Objects

   2020

5. 5
   JSON Formatter and Validator▲81

   Useful JSON online tools

   2022

6. 6
   JSON File Splitter Online▲9

   Split large JSON files online quickly and easily 100% free

   2025

7. 7
   Free JSON formatter & validator▲7

   Format, validate and beautify json

   2025

8. 8
   Merge JSON▲5

   50+ free JSON tools that run entirely in your browser

   Jun 2026 · mergejsonfiles.com

9. 9
   JSON Formatter▲13

   Free json formatter & viewer online

   2025

10. 10
    JSON Swiss▲13

    Free Swiss Army Knife for JSON Data

    2025

11. 11
    Online JSON Formatter Tool▲12

    json formatter online, online json tool, format json

    2025

12. 12
    JSON Formatter Viewer &&Free Online Tool▲5

    Instantly format, beautify, and view your JSON data online.

    2025

13. 13
    JSON Utils▲6

    Free online json formatter, validator & editor tool

    Oct 2025

14. 14
    JSONLint▲7

    All-in-one JSON Tools for Developers

    2025

15. 15
    JSONKit▲4

    47 free JSON tools — all in your browser, zero uploads

    Jun 2026 · jsonkit.in

16. 16
    JSON Tools▲2

    Free JSON viewer, formatter & converter in your browser

    Feb 2026 · json-viewer-ce3.pages.dev

17. 17
    JSON Editor Pro▲6

    View, edit & format json online

    2025

18. 18
    JSON Tools▲4

    Format, validate & beautify json

    2025

19. 19
    Advanced JSON Formatter▲11

    Efficient JSON editing with one-click formatting & search

    2025

20. 20
    Free JSON Formatter▲3

    Format, validate and minify JSON instantly

    Jun 2026 · tools.bmjapps.in

21. 21
    Visual JSON Editor▲8

    Free, visual JSON editor - Validation, Type Support etc

    Nov 2025 · visualjsoneditor.com

22. 22
    JSON Translate▲11

    Free, fast, and accurate json language translator

    2025

23. 23
    JSON Web Tools▲2

    18 free JSON tools for developers - all in one place

    Feb 2026 · jsonwebtools.com

24. 24
    JSON Viewer▲6

    Free online json formatter, validator & viewer tool

    Sep 2025

Ranked by how close each launch is in meaning, then by votes. Refine with a description →