8 tools
Developer tools
Encoding, hashing, and token utilities for developers.
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.env file sanitizer
Free .env file sanitizer. Paste your .env file and get back a version with secret values masked — API keys, tokens, passwords, database URLs — so you can share the file structure safely. Runs entirely client-side.
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Base64 encoder / decoder
Free online Base64 encoder and decoder. Convert text to Base64 or decode Base64 to text instantly in your browser — with standard and URL-safe modes. Nothing is sent to a server.
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Hash generator (MD5, SHA-1, SHA-256, SHA-512)
Free online hash generator. Enter any text to instantly compute MD5, SHA-1, SHA-256, and SHA-512 hashes client-side — nothing is sent to a server.
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JWT decoder
Free online JWT decoder. Paste a JSON Web Token to instantly decode the header, payload, and claims — including human-readable timestamps for iat, exp, and nbf. Runs entirely in your browser.
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Meta tag & OG previewer
Free meta tag and Open Graph previewer. Enter your title, description, canonical URL, and OG image to see a live Google search snippet and social card preview. Flags title and description length violations. No data is sent anywhere.
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String case converter
Paste any text and instantly convert it between camelCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, PascalCase, Title Case, and sentence case. Useful for renaming variables, database columns, URL slugs, and CSS class names.
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UUID / ULID generator
Generate cryptographically random UUID v4 or ULID identifiers instantly in your browser. Bulk-generate up to 100 at once, copy individually or all at once. Nothing is sent to a server — all IDs are generated client-side using the Web Crypto API.
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Unix timestamp converter
Convert a Unix timestamp to a human-readable date or turn any date into a Unix timestamp — instantly in your browser. Shows UTC, local timezone, ISO 8601, RFC 2822, and relative time. Supports seconds and milliseconds.