100% In-Browser & Private — your data never leaves this device
Developer Tools
Private, in-browser utilities for everyday engineering workflows — JWT decoding, JSON typing, cron parsing, and more.
11 tools · 100% in-browser
JWT Decoder
Decode JSON Web Tokens instantly. View header, payload, signature, and expiration — 100% in your browser.
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JSON to TypeScript Generator
Convert JSON objects into TypeScript interfaces instantly. Paste API responses and get clean, export-ready types — 100% in your browser.
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Cron Expression Parser
Parse and visualize cron expressions in plain English. Supports Unix and Quartz syntax — instantly, in your browser.
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SQL Schema Transpiler
Convert SQL CREATE TABLE scripts into JSON schema or TypeScript interfaces. Parse database definitions instantly in your browser.
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JSON Formatter
Pretty-print or minify JSON online with instant validation — 100% in your browser, no uploads.
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XML Formatter
Pretty-print or minify XML with clear error messages — private, fast, and fully in-browser.
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XML to JSON Converter
Convert XML to JSON instantly in your browser. Attributes and nested elements become structured JSON — nothing is uploaded.
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JSON to XML Converter
Convert JSON objects into well-formed XML online — private processing in your browser with downloadable output.
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JSON to YAML Converter
Convert JSON to YAML for Kubernetes, CI, and app configs — fast and private in your browser.
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YAML to JSON Converter
Convert YAML to JSON online without uploading configs — ideal for APIs, CI, and local debugging.
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JSON to CSV Converter
Convert JSON arrays of objects into CSV for Excel and sheets — privately in your browser.
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