betterjson.com VS ConvertJSON

• Repair
  Fix syntax errors in your JSON automatically with just the click of a button.
• Sharing
  Generate a share link that can be sent to others.
• JSONPath Filtering
  Filter/query your JSON using JSONPath.
• XML, YML, and CSV Export
  Export your formatted JSON to XML, YML, or CSV.

• Browser-based convenience
  As an online JSON conversion tool, it generally needs no installation or setup. You can paste or upload data and convert it from any device with a browser. I could not verify the site's exact feature set, so check it directly.
• Quick one-off conversions
  Web converters like this are usually well suited to fast, ad hoc tasks such as turning JSON into CSV, XML, or YAML, or formatting and validating a snippet, without writing a script.
• Low barrier to entry
  Tools of this type typically have a simple interface that non-developers such as analysts or product staff can use without knowing programming or command-line tools.
• Likely free or low cost for basic use
  Many JSON utility sites offer core conversion for free, which suits occasional users. Confirm the current pricing and any usage limits on the site.
• Helps with data inspection
  Converting JSON to a tabular or alternate format can make nested data easier to read, review, and share with others.

Possible disadvantages

• Privacy and security concerns
  Pasting or uploading data to a third-party website risks exposing sensitive or proprietary information. Check the site's privacy policy and whether conversion runs client-side or on a server before using confidential data.
• Not suited to automation
  A manual web interface does not fit repeatable pipelines or CI/CD workflows. Libraries or CLI tools like jq, Python, or Node scripts are better for automated or large-scale conversions.
• Possible file size and performance limits
  Browser-based tools often struggle with very large JSON files because of memory limits, upload caps, or server restrictions.
• Limited handling of complex structures
  Deeply nested or irregular JSON can lose structure or flatten awkwardly when converted to flat formats like CSV. Online tools usually offer limited control over mapping rules.
• Dependence on availability and trust
  You rely on the site being online and maintained. Free web tools may change features, add limits, or disappear, and little independent documentation or support is often available.