Developer tools
05 toolsTrueScalers publishes five developer tools: a JSON formatter and validator, a Base64 encoder, a URL encoder, a SHA hash generator and a regular-expression tester. Each runs entirely in the browser using native JavaScript and the Web Crypto API, so API keys, tokens and production payloads pasted into them are never transmitted or logged.
JSON, Base64, URL encoding, SHA digests and regular expressions. Safe for real payloads and real secrets, because nothing you paste is transmitted or stored anywhere.
JSON formatter
Format, minify, validate and sort JSON with error line numbers. Runs in your browser, so API payloads are never transmitted.
Reviewed
Base64 encoder
Encode and decode Base64, including URL-safe output and full UTF-8 support for accented text and emoji. Nothing is uploaded.
Reviewed
URL encoder
Percent-encode and decode URLs, with separate component and whole-URL modes, plus a query parameter breakdown.
Reviewed
Hash generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 digests of text or a file, using the browser Web Crypto API.
Reviewed
Regex tester
Test regular expressions with live highlighting, capture group breakdown and replacement preview. Runs in your browser.
Reviewed
Other categories
Last reviewed: · How every formula is derived