CSS Clamp Calculator

Build a fluid type clamp() from min, max and viewport range.

Base64 Encode / Decode

Encode text to Base64 or decode it back. UTF-8 safe.

Aspect Ratio Calculator

Find the missing side or simplify a ratio like 1920×1080 → 16:9.

JWT Decoder

Inspect header and payload of a JSON Web Token. Does not verify signatures.

Dummy JSON Generator

Generate sample user records as JSON for prototypes.

Regex Tester

Test a regular expression against sample text and see all matches.

Nano ID Generator

Create short URL-safe unique IDs with a chosen length.

Cron Expression Builder

Build a 5-field cron schedule with a readable English summary.

URL Parser

Split any URL into protocol, host, path, query and hash.

Unix Timestamp Converter

Convert between Unix seconds and human-readable UTC / local dates.