The JSON converter.
Generate types for 9 languages, convert between JSON, YAML, CSV and XML, and diff, validate or repair — all in one native app that runs locally on files of any size. Nothing uploaded.
Local · No upload · No size limit on opening · Apache-2.0
Generate types from JSON
Convert formats
Validate, compare & repair
Convert JSON locally — at any size
Online converters make you paste or upload your document to a server before they do anything. That's a non-starter for JSON that holds secrets, customer data or a multi-gigabyte export — and most web tools give up past a few megabytes anyway. Pandia runs every conversion on your machine: nothing is uploaded, and there's no size limit on the file you open.
Each converter here is the same engine Pandia uses internally — deterministic output, idiomatic per language, and fast enough to run on files far too large for a browser tab. Pick a target, open your JSON, and copy or export the result.
Frequently asked questions
Is Pandia an online JSON converter?
No — it’s a native desktop app, which is the point: your data is converted locally and never uploaded, and there’s no size limit on the file you open.
What can it convert JSON to?
Type definitions for 9 languages (TypeScript, Rust, Go, Kotlin, Python, PHP, Java, Zod and JSON Schema), and data formats including YAML, CSV and XML. It also diffs, validates and repairs JSON.
Stop fighting your JSON.
Download the native app, open your biggest file, and get to work. Free, offline, and open source.