Rewrite every key in your JSON to a consistent case convention — across the entire object tree.
Transform and rename JSON keys with ease
camelCase, snake_case, PascalCase, kebab-case
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APIs from different teams emit different conventions: firstName, first_name, First-Name. Normalizing to one convention before persisting or comparing avoids subtle bugs and makes diffs readable.
camelCase — firstName. JS/TS default. snake_case — first_name. Python, Ruby, many SQL columns. kebab-case — first-name. URL slugs, CSS. PascalCase — FirstName. C#/Go exported fields. SCREAMING_SNAKE — FIRST_NAME. Constants, env vars.
Acronyms (URL, ID, HTTP) are detected and folded according to convention — URLPath becomes urlPath in camelCase. Numbers attached to words (field1 vs field_1) are configurable.
For one-off scripts, lodash + a recursive walk does the same job.
import { camelCase, isPlainObject } from 'lodash-es';
function normalize(node) {
if (Array.isArray(node)) return node.map(normalize);
if (isPlainObject(node)) return Object.fromEntries(Object.entries(node).map(([k, v]) => [camelCase(k), normalize(v)]));
return node;
}Local-only — no upload.