Developer Tools — Defient.io

Data & Format

{}

JSON Formatter

Validate, prettify, and minify JSON with detailed error reporting.

Y/C

JSON to YAML & CSV

Convert structured JSON into YAML or CSV for configs and exports.

.md

Markdown Previewer

Render Markdown to HTML side-by-side with live updates.

±=

Diff Checker

Line-by-line comparison of two text blocks with adds and removes.

Lor

Lorem Ipsum Generator

Filler text in words, sentences, or paragraphs.

123

Text Counter

Character, word, line, byte, and reading-time counts.

Encoding & Encryption

B64

Base64 Encoder/Decoder

RFC 4648 Base64 in either direction, UTF-8 safe.

%20

URL Encoder/Decoder

Percent-encoding for query strings and full URLs.

HTML Entity Encoder

Encode and decode special HTML characters and entities.

SHA Hash Generator

SHA-1, SHA-256, SHA-384, SHA-512 via Web Crypto.

HMC

HMAC Generator

Keyed message authentication codes using SHA-based HMAC.

JWT

JWT Decoder

Inspect JWT header, payload, and signature — detect expiry.

Generators

UID

UUID Generator

Crypto-grade v4 UUIDs in bulk with format options.

●●●

Password Generator

Strong random passwords with entropy reporting.

a-z

URL Slug Generator

Convert any string into a clean, URL-safe slug.

Web & Networking

URL

URL Parser

Break a URL into protocol, host, path, query, and hash.

200

HTTP Status Lookup

Search every HTTP status code by number or keyword.

M/T

MIME Type Reference

Searchable MIME-type database with file extensions.

/24

IP Subnet Calculator

CIDR breakdown — network, broadcast, host range, mask.

Time & Math

⏱

Timestamp Converter

Unix time ↔ ISO 8601 ↔ human-readable date strings.

now

Unix Time Now

Live current timestamps in seconds, milliseconds, ISO, and local time.

* *

Cron Expression Parser

Translate a cron expression into plain English.

Number Base Converter

Bin, oct, dec, hex — convert all four simultaneously.

Text & Strings

/.*/

Regex Tester

Test JavaScript regex with flags, capture groups, live matches.

Case Converter

camelCase, snake_case, kebab-case, CONSTANT, Title — one click.

#06

Color Converter

HEX ↔ RGB ↔ HSL with a live swatch preview.