The Complete JSON & Data Toolkit

Question

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FormatJ SON Online: A Powerful JSON Toolkit That now Supports Files Up to 100 MB

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Dealing with large JSON files can be a headache — many online tools crash or refuse files past a small size limit. That’s why I built FormatJSONOnline.com, a toolbox that not only formats, validates, and converts JSON, but now supports files up to 100 MB. Here’s what makes it stand out, and how you can get full value from it.

Key Features & Highlights
✅ Format & Beautify JSON

Clean up minified or messy JSON into a readable structure.

Live Validation

Catch syntax errors instantly — missing commas, mismatched braces, and more.

Minify JSON

Remove unnecessary whitespace to compress JSON for performance.

Conversion Tools

JSON → Excel / JSON → CSV / JSON → XML

Excel → JSON & CSV → JSON

AI JSON Generator + Mock API

Generate JSON from plain English prompts, edit it, and publish it as a live mock REST endpoint.

Support Up to 100 MB

Unlike many tools with strict size limits, FormatJSONOnline handles files up to 100 MB, making it robust for real-world API responses and large datasets.

Additional Utilities

SQL Formatter

JSON Compare / Schema Validator / Path Finder / Dummy JSON Generator

How to Use It (Step-by-Step)

Upload or Paste JSON / Prompt Description – Either bring in your own JSON or describe what you want in plain English.

Edit & Validate – Fix any errors, beautify, or minify as needed.

Convert or Publish – Convert JSON to other formats or publish it as a mock API endpoint.

Why Support for 100 MB Matters

Many online JSON tools cap at a few MB, which means you have to split, reduce, or only format parts of large responses. Supporting 100 MB means:

You can format full API responses in one go.

No need to chunk your JSON manually.

Better for real production debugging and logging tasks.

Try It Out

Give it a spin here: https://formatjsononline.com

Use the conversion pages:

JSON to Excel

Excel to JSON

JSON to C#

JSON to PDF

Final Thoughts

Format JSON Online aims to be the one–stop JSON toolkit for developers. With support up to 100 MB, AI JSON generation, mock API creation, and robust conversions, it eliminates the need to bounce between multiple small utilities.

Comments

Really solid upgrade, especially the 100 MB support — that’s a big deal for real-world datasets. Could this eventually become a go-to alternative for developers tired of juggling multiple JSON tools?

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Thanks a lot! That’s exactly the goal — to make it a go-to JSON toolkit so devs don’t have to juggle multiple tools.

We’re continuously adding features — if there’s anything you’d love to see next, feel free to suggest.