Converters tools
26 developer tools for converters. Every tool runs offline — your data never leaves your machine.

Unix Time Converter
Convert between Unix timestamps and human-readable dates

YAML to JSON
Convert YAML documents to JSON

JSON to YAML
Convert JSON documents to YAML

CSV to JSON
Convert CSV data to a JSON array

JSON to CSV
Convert a JSON array of objects to CSV

XML ⇄ JSON
Convert XML documents to JSON and back

Number Base Converter
Convert numbers between binary, octal, decimal, hex and any base 2–36

JSON Schema Generator
Infer a JSON Schema (draft 2020-12) from sample JSON

JSON Patch (RFC 6902)
Apply, generate, or validate JSON Patch operations per RFC 6902

.env ⇄ JSON
Convert between dotenv files and JSON objects

JSON to Code
Generate typed models from JSON (TypeScript, Swift, Kotlin, Go…)

cURL to Code
Convert a curl command into fetch, Python requests or axios code

HTML to JSX
Convert HTML markup to React JSX — attributes, inline styles, SVG props, entities, fragments

PHP to JSON
Convert a PHP array literal to JSON

JSON to PHP
Convert JSON to a PHP array literal

String Case Converter
Convert a string into every naming convention at once

Color Converter
Convert colors between hex, RGB, HSL, HSV, HWB, CMYK, UIColor and named formats

SVG to CSS
Turn an SVG into a CSS background-image data-URI snippet

SVG to React Component
Convert SVG markup into React, React Native, or Vue components with prop spreading

Image Compress & Convert
Compress images, convert between WebP/JPEG/PNG and resize — fully offline

Image Cropper
Crop images to specific dimensions or aspect ratios — PNG, JPEG, WebP output

Chmod Calculator
Convert between octal and symbolic unix file permissions

Markdown Preview
Render Markdown (GFM) as HTML with live preview

HTML Preview
Render HTML in a sandboxed preview (no scripts, no network)

Date Difference Calculator
Calculate the difference between two dates in days, hours, minutes, seconds, and business days

Unit Converter
Convert between units — data sizes (binary/decimal), time, length, weight, temperature, angle, speed