jsonyo — format, validate, query, diff JSON inside wp-admin.
A free WordPress plugin and 3-browser extension. Zero data leaves your browser. Same engine as the @v0idd0/jsonyo npm CLI, surfaced where WordPress developers actually work. compare the install path first.
install jsonyo where the JSON already lives.
If your day starts in Tools → JSON Toolkit, the WordPress plugin is the shortest install path. If you inspect REST responses or JSON-LD in browser tabs, the extension keeps the same engine one click away. Use the surface that removes the most copying, pasting, and tab switching on day one.
WordPress plugin approved. compare first, then install from the official directory.
The WordPress plugin is live on WordPress.org as a free, GPLv2-or-later tool: six JSON modes inside wp-admin, zero database options, zero API calls, zero telemetry. The dedicated compare page shows why WordPress users should install this instead of bouncing to a browser tab. It is built for developers, agencies, and site owners who inspect REST responses, ACF payloads, theme.json, block.json, webhooks, and config blobs inside the dashboard.
Install jsonyo where the JSON already lives.
If your workflow lives in wp-admin, install the WordPress plugin first. If your workflow lives in a browser tab, use the extension first. The same local engine powers both, so you can choose the surface that removes the most copy-paste and tab switching on day one.
what jsonyo does (six modes, one panel)
Paste raw JSON. Get a properly indented tree with key / string / number / boolean syntax highlighting. Invalid input shows exact line + column.
Pass or fail. With key count, max nesting depth, and stats-grade summary. No retries, no rate limits — it's all browser-side.
$.users[0].name · items[*].id · recursive descent ..key. Breadcrumb shows your path. Inspect ACF fields, REST responses, theme.json, anything.
Paste two JSON blocks. See added / removed / changed paths side-by-side with $.path notation. Versioning configs · comparing API responses.
Strip whitespace, get one-line output. Char-count shown for size budgets. Same engine that powers the npm CLI's jsonyo minify.
Quantitative breakdown: counts of objects / arrays / strings / numbers / booleans / nulls / keys + max depth. Useful for sizing storage and audits.
where jsonyo lives
Terminal-first. npm install -g @v0idd0/jsonyo. 18 commands including validate, format, query, diff, merge, flatten, convert (YAML/TOML/CSV/XML), generate types (TS/Go/Python/Rust). @v0idd0/jsonyo on npm · v2.0.2.
Tools → JSON Toolkit. Same six modes, same engine, native wp-admin chrome. GPLv2-or-later, no database options, no API calls. jsonyo on WordPress.org.
install the WordPress plugin for wp-admin, or use the CLI when you need the same JSON engine in terminal workflows. If you are deciding between surfaces, read the compare page first.