/ DEVELOPER TOOLBOX

Inspect, transform, test, and ship faster.

Small browser-native utilities for everyday frontend, backend, API, debugging, and data work.

JSON Validator

Validate and format JSON.

RegEx Tester

Test JavaScript patterns and flags.

JWT Decoder

Inspect headers and payload claims.

Base64 Converter

Encode and decode Unicode text.

Unix Timestamp

Convert seconds, milliseconds and dates.

HEX ↔ RGB

Convert and preview web colors.

Query Parser

Turn URL parameters into JSON.

CSS Minifier

Remove comments and excess spacing.

HTML Minifier

Compact ordinary static markup.

UUID Generator

Create UUID v4 identifiers.

SHA-256 Hash

Calculate browser-native text digests.

Password Generator

Create cryptographically random passwords.

Local by default

Payloads, tokens, snippets, URLs, and identifiers remain in the browser. The JWT page decodes data for inspection but deliberately does not claim signature verification.

Use production parsers when needed

Lightweight minifiers and formatters are convenient for ordinary input. Build pipelines should still use tested language-aware tools with automated tests.