loggerhead/json4u

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

3228 stars · 235 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

JSON For You (json4u) is an open-source web application for visualizing, editing, formatting, validating, and comparing JSON data. It offers graph and table views, structured/text diffing, jq command support, and CSV import/export through a polished browser UI.

Use cases

• visualize json as a graph or table
• compare two json files and find differences
• format and validate json with error context
• run jq queries on json data
• convert json to csv and back
• debug large json api responses
• preview urls, timestamps, and images inside json values

When to choose

• you need an interactive visual tool to explore or diff JSON in a browser
• you want jq support combined with graph/table views in one UI
• you work with JSON files up to several megabytes and need fast rendering
• you want to self-host a JSON toolkit

When to avoid

• you need a headless CLI or programmatic JSON processing library
• you need JSONL or JSONC support, which is still on the roadmap
• you need a lightweight editor plugin rather than a full web app

Facets

application · maturity active

json data-visualization parser developer-tools csv charts developer-tools web-development data-visualization files browser json-viewer json-comparison jq graph-view table-view json-formatter online-tool web-server nodejs typescript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="loggerhead/json4u")