toolsko

Choose your language

ToolsKo is written in English. Prefer another language? Open a translated version of this public page.

Browser language suggestion: English. You can choose any language below.

Translation opens in a new tab using Google Translate. It receives this public page URL. Automatic translations may contain mistakes; use the original English page for tool inputs, downloads, and generated documents.

Your choice is remembered on this browser when storage is available. Use Language in the header to change it.

JSON Schema Generator

Create a draft JSON Schema from an example object.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: A starting schema from a single sample. Object keys are required as observed; arrays infer their first element only and empty arrays accept any items. Review types, constraints and optional properties before using for validation. Does not validate uploaded documents.

How to use it (step by step)

  1. 1Type or paste your text into the “Input” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2The answer appears right away in the “Result” box. No button needed.
  3. 3Press Copy and paste the result wherever you need it.

Words to know

JSON
A common text format apps use to store and send data, made of names and values in { } brackets.
Struct / class / schema
A description of the shape of data: which fields it has and what type each one is (text, number, list…).
Array / list
An ordered collection of items, like ["apple", "banana"]. Every programming language has one.

More in Developer

README Generator (Markdown)Create a clean README.md for GitHub with description, features, install, usage, tech stack and license.Git Commit Message Generator (Conventional Commits)Write clear commit messages like “feat(auth): add Google login” and get the git command, with checks for length and style.Semantic Version (SemVer) Calculator & Range CheckerCompare versions, see the next major/minor/patch, and check if a version matches npm ranges like ^1.2.0 or ~2.1.SQL IN Clause Generator (List to IN (…))Turn a pasted list (from Excel, emails, IDs) into a SQL IN (…) clause with quotes, escaping and duplicates removed.List to Array Converter (JSON, JS, Python, PHP…)Turn a pasted list into an array for JSON, JavaScript, Python, PHP, Java, C#, Go or a comma-separated line.cURL to Code Converter (fetch, Axios, Python, PHP)Paste a curl command (from API docs or Chrome “Copy as cURL”) and get JavaScript fetch, Axios, Python requests or PHP code.