Category spotlight

Developer Tools

Essential utilities for engineers and builders

Essential utilities for engineers and builders. These online developer tools run entirely in your browser and help you work with developer data quickly and safely. Paste or upload your content, configure the options, and get instant results without installing extra software.

Tool catalog

Everything under Developer Tools

Click into any card to open its dedicated `/ dev /slug` route. Live tools render instantly, while planned ones display detailed placeholders so you can track progress.

Regex Tester

Test regular expressions with live matching

SQL Formatter

Format and beautify SQL queries

Email Validator

Validate email addresses and check syntax

email validator, email checker

Mock Data Generator

Generate realistic fake data for testing and development

mock data, fake data

SQL Validator

Validate SQL syntax and structure

HTML Formatter & Beautifier

Format and beautify HTML code with proper indentation

html formatter, html beautifier

API Playground

Design and send HTTP requests with history

api client, http tester

SQL Formatter & Beautifier

Format and beautify SQL queries with syntax highlighting

sql formatter, sql beautifier

HTML to Markdown Converter

Convert HTML markup to clean Markdown syntax

html to markdown, html to md

SQL Minifier

Compress SQL queries by removing whitespace

sql minifier, minify sql

HTML Minifier

Compress HTML by removing whitespace and comments

html minifier, minify html

Credit Card Validator

Validate credit card numbers using the Luhn algorithm

credit card validator, luhn algorithm

Phone Number Formatter

Format and validate international phone numbers

phone formatter, phone number format

htpasswd Generator

Generate Apache htpasswd entries for HTTP authentication

htpasswd, apache password

Developer Tools | Utilz.io