All tools
Developer tools
JWT, regex, JSON, CSV, XML, cron, secrets, HTML, and JavaScript tools
Developer tools cover quick checks that engineers repeat every day, from local secret generation to JSON formatting and regex testing. They are lightweight, focused, run locally where possible, and avoid requiring accounts or project setup.
Decode JWT header and payload locally without verification claims.Generate secure local secrets, API tokens, passwords, and .env values.Test regular expressions, compare text blocks, and sort JSON keys.Format XML, convert CSV and JSON, parse cron expressions, and clean HTML or JavaScript snippets.
Developer tools
16 toolsJSON Key SorterSort JSON object keys alphabetically for cleaner diffs.CSV to JSON ConverterConvert CSV rows into formatted JSON objects locally.JSON to CSV ConverterConvert JSON objects or arrays into CSV locally.XML FormatterFormat compact XML with readable indentation.XML ValidatorCheck whether XML tags appear balanced and properly nested.JWT DecoderDecode JWT header and payload locally without verifying or sending the token anywhere.Regex TesterTest a regular expression against sample text and inspect matches.Text Diff CheckerCompare two text blocks line by line and summarize added or removed lines.Cron Expression ParserParse a five-field cron expression into minute, hour, day, month, and weekday fields.HTML MinifierRemove comments and extra spacing from HTML snippets.JavaScript MinifierRemove comments and extra whitespace from small JavaScript snippets.Secret Key GeneratorGenerate cryptographically secure Base64 or URL-safe secrets locally in the browser.Password GeneratorGenerate strong passwords with adjustable length, numbers, symbols, and readable character options.API Token GeneratorCreate URL-safe bearer tokens with optional prefixes for development, testing, and internal tooling.Random Hex GeneratorGenerate secure random hexadecimal strings for nonces, salts, IDs, and configuration values..env Secret GeneratorGenerate ready-to-copy environment variable lines for app secrets and session keys.
Why this page matters
Decode JWTs, test regex patterns, compare text, parse cron expressions, generate secrets, format JSON, convert CSV/XML, and minify HTML or JavaScript snippets.
Category FAQ
No. Even though these tools avoid storage, production secrets should stay in trusted local systems.
No. It decodes header and payload only. It does not prove the token is trusted.