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Developer Tools Collection

Essential online tools for programmers, all running locally in your browser.

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JSON Formatter

Beautify/minify/validate

JV

JSON Validator

Syntax validation

JDF

JSON Diff

Difference comparison

JP

JSON Path

Path expression query

CSV

JSON to CSV

Table conversion

YML

JSON to YAML

Format conversion

JM

JSON Minify

Compress and beautify

JE

JSON Editor

Visual tree editor

JT

JSON to Table

Table display

B64

Base64 Encode/Decode

Text encoding

URL

URL Encoder/Decoder

Percent encoding

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HTML Entities

Special characters

.*

Regex Tester

Real-time matching

RG

Regex Generator

Common patterns

#H

Hash Generator

MD5/SHA

UID

UUID Generator

Batch generation

KEY

Password Generator

Secure random passwords

XML

XML Formatter

Beautify/convert to JSON

SQL

SQL Formatter

Beautify/minify

JWT

JWT Decoder

Token decode

CSS

CSS Formatter

Beautify/minify

CM

CSS Minify

Compress CSS code

HM

HTML Minify

Compress HTML code

JS

JS Minifier

JavaScript compression

N>

Number Base Converter

Binary/octal/hex/decimal

BIN

Binary Converter

Text and multi-base

BIC

Binary Calculator

Bitwise operations

U+

Unicode Search

Character search

ASC

ASCII Table

Character reference

IP

IP Lookup

Geo location info

IPC

IP Converter

IP/integer/CIDR

IC

IP Calculator

Subnet and CIDR

NET

Subnet Calculator

Subnet mask division

HTTP

HTTP Status Codes

Status code reference

CR

Cron Generator

Scheduled expressions

MD

Markdown Editor

Live preview

H2M

HTML to Markdown

Format conversion

MDT

CSV to Markdown

Markdown table

U

CSS Unit Converter

px/rem/em/pt/vw

CLR

Color Picker

HEX/RGB

GR

CSS Gradient

Visual gradient code

SH

Box Shadow Generator

CSS shadow code

MT

Meta Tag Generator

SEO metadata generation

SVG

SVG Editor

Online SVG editing

SO

SVG Optimizer

Compress SVG files

R

Screen Ruler

Pixel measurement

WF

Wireframe Generator

Quick wireframe creation

HTM

HTML Preview

Live HTML/CSS/JS editing

DIFF

Text Diff

Line-by-line comparison

BAR

Barcode Generator

Code128/EAN/UPC

AES

AES Encrypt/Decrypt

AES-256 encryption

QRD

QR Code Decoder

Upload and decode QR

SEO

SEO Checker

SEO score and tips

CC

Credit Card Validator

Luhn algorithm check

ID

ID Card Validator

Format validation

SPD

Speed Test

Download/upload speed

RES

Screen Resolution

Current resolution info

INV

Invisible Characters

Zero-width character detection

🌐

Translator

Multi-language translation

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