KNGDEV

Base64 Decoder / Encoder

Input

Ctrl + Enter

Alt + Enter

Output

Hex Editor

Paste, type, or drop a file

Press Ctrl+V to paste hex or text (detected automatically), or type hex like DE AD BE EF.

Drop file to open

Offset: 0x00000000 Length: 0 B Tab switch pane · Ins overwrite/insert · Ctrl+F find · Ctrl+G go to · Esc leave editor

JWT Decoder

Token

Ctrl + Enter

Decoded Claims

Header & payload will appear here...

Unix Timestamp Converter

Timestamp

Ctrl + Enter

Result

Converted date will appear here...

Date → Timestamp

Ctrl + Enter

Timestamp

URL Encoder / Decoder

Input

Ctrl + Enter

Alt + Enter

Output

HTML Entity Encoder / Decoder

Input

Ctrl + Enter

Alt + Enter

Output

Code Minifier

Language

Code

Ctrl + Enter

Output

Code Beautifier

Language

Code

Ctrl + Enter

Output

Diff Checker

Original

Modified

Ctrl + Enter

Result

Differences will appear here...

JSON Formatter / Validator

JSON Input

Ctrl + Enter

Alt + Enter

Output

Regex Tester

Pattern

Flags

Test string

Ctrl + Enter

Matches

Matches will be highlighted here...

DNS Lookup

Domain

Record type

Ctrl + Enter

Records

DNS records will appear here...

IP Info

IP address (leave empty for your own IP)

Ctrl + Enter

Info

IP details will appear here...

HTTP Header Inspector

URL

Ctrl + Enter

Response headers

Headers will appear here...

Hash Generator

Text to hash

Algorithms

SHA-1 SHA-256 SHA-384 SHA-512

Ctrl + Enter

Digests

Password Strength Checker

Password

—

User-Agent Parser

Custom User-Agent

Ctrl + Enter

Parsed result

Browser, engine, OS and device details will appear here...

CORS Tester

URL to test

Ctrl + Enter

Result

Test results will appear here...

Color Converter

Hue

Alpha

HEX — supports #RGB, #RRGGBB, #RRGGBBAA, and #THEME

RGB channels (0–255, alpha %)

HSL channels (hue 0–360, s/l %, alpha %)

RGBA Output

HSLA Output

QR Code Generator

Content

Size

Ctrl + Enter

Preview