Nearby tools from the catalog that fit the same job or workflow.
Developer
Turn a code snippet into a polished PNG screenshot with window chrome and a gradient background. Free, in your browser, nothing is uploaded.
Developer
Paste and edit JSON with live validation, pretty-print, and minify. Free, in your browser, nothing is uploaded.
Developer
View and explore JSON as a collapsible, color-coded tree with one-click formatting. Free, in your browser, nothing is uploaded.
Developer
Generate a scannable Code 128 barcode as inline SVG from any text or number. Free, in your browser, nothing is uploaded.
Developer
Build a cron expression from fields and presets, or paste one to read a plain-English explanation. Free, in your browser, nothing is uploaded.
Developer
Create shields.io-style status badges with custom label, message, and colors. Free, in your browser, nothing is uploaded.
Everyone can see the current score. Signed-in users can leave a 1 to 5 star rating, and any written review goes only to review@cleanor.app.
No ratings yet. Be the first to leave one.
Sign in to leave a public score from 1 to 5 stars. Optional written feedback is private and emailed only to review@cleanor.app.
This block mirrors the system review flow: score first, then an optional private note.
A quick way to understand who this helps, what it solves, and where it connects next.
Developers generating types from JSON.
Using the json to typescript without installing anything or signing up.
Capture json-to-typescript intent with a fast, browser-side tool that runs 100% locally.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
JSON to TypeScript reads a JSON sample and generates matching TypeScript interfaces. It walks nested objects into their own named interfaces, infers array element types, merges objects that appear across an array so missing keys become optional, and preserves null as a nullable type. You can set the root interface name, and quoted keys are used automatically when a property is not a valid identifier. It is a fast way to bootstrap types from an API response or config file. All parsing and code generation happen in your browser, so nothing you paste is uploaded.
Short answers for the questions people usually have before trying a utility like this.
When your JSON contains an array of objects, keys that are missing from some elements are marked optional with a question mark, so the generated interface reflects real-world variance in the data.
The tool shows a clear parse error and leaves the output empty instead of crashing. Fix the JSON and the interfaces regenerate live.
No. The JSON is parsed and typed entirely in your browser. Nothing you paste ever leaves your device.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Paste JSON and get TypeScript interfaces with inferred nested objects, arrays, optional and nullable fields. Nothing is uploaded.
Types are inferred from your sample. Runs locally in your browser.