Developer
AI Model Leaderboard
Compare AI models by category scores, value and speed from LiveBench and OpenRouter data, refreshed daily with the date shown, plus image and video rankings.
Timestamp Converter
Convert Unix time in seconds or milliseconds to and from dates in any time zone, with daylight-saving gaps flagged.
Hash Checker (SHA-256)
Hash text or a file with SHA-256 and compare it against the expected value. Runs in your browser with no upload.
CSV to JSON
Convert between CSV and JSON and check the result as a table. Nothing you enter is sent to a server.
Cron Expression Builder
Build a cron expression from a schedule and preview the next eight run times.
Config File Converter
Convert between JSON, YAML and TOML and see exactly what gets lost. Nothing you enter is sent to a server.
Regex Tester
Enter a pattern and see matches, capture groups and a piece-by-piece explanation as you type. Nothing you enter is sent to a server.
Base64 Converter
Encode or decode UTF-8 text, including non-Latin characters, to and from Base64 (standard or URL-safe). Nothing you enter is sent to a server.
JWT Decoder
Decode a JWT to read its header, payload and expiry, and verify the signature if you add a key. Nothing you enter is sent to a server.
Password Generator
Pick a length and character set to generate a random password with cryptographic randomness and see its strength. Nothing is stored.
SQL Formatter
Reformat a SQL query with readable line breaks and indentation. Nothing you enter is sent to a server.
JSON Formatter
Pretty-print or minify JSON, see errors by line and column, and auto-fix trailing commas or single quotes. Nothing you enter is sent to a server.
URL Encode / Decode
Percent-encode non-ASCII text and special characters in a URL, or decode them back. Nothing you enter is sent to a server.
UUID Generator
Generate up to 100 UUID v4, time-ordered UUID v7 or ULID values at once, using your browser’s cryptographic randomness.
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