UtilsLab
100+ Free Online Tools for Developers
All tools run entirely in your browser. No server uploads, 100% private and secure.
⭐Featured Tools
JSON Validator
Validate and format JSON
Case Converter
Convert text between cases
Base64 Encoder
Encode/decode Base64
Regex Tester
Test regular expressions
Password Generator
Generate secure passwords
Unix Timestamp Converter
Convert Unix timestamps to dates
{ }JSON ToolsValidate, format, convert and manipulate JSON data
JSON Validator
Validate and format JSON
JSON Formatter
Format and beautify JSON
JSON Minifier
Minify JSON to save space
JSON Viewer
View JSON in tree format
JSON to CSV
Convert JSON to CSV
JSON to XML
Convert JSON to XML
JSON to YAML
Convert JSON to YAML
JSON Diff
Compare two JSON objects
JSON Path Tester
Test JSON path queries
JSON Sorter
Sort JSON keys
JSON Escape
Escape/unescape JSON strings
JSON to Table
Convert JSON to HTML table
JSON Schema Validator
Validate JSON against schema
📝Text ToolsText manipulation and conversion utilities
Case Converter
Convert text between cases
Word Counter
Count words and characters
Line Sorter
Sort lines alphabetically
Remove Duplicates
Remove duplicate lines
Reverse Text
Reverse text or lines
Find & Replace
Find and replace text
Slug Generator
Generate URL slugs
Random String
Generate random strings
Text Trimmer
Trim whitespace from text
Text Splitter
Split and join text
Remove Special Characters
Remove special characters
Extract Emails
Extract emails from text
Extract URLs
Extract URLs from text
Character Counter
Count characters with details
Variable Case Converter
Convert variable naming cases
🔐EncodingEncode and decode various formats
Base64 Encoder
Encode/decode Base64
URL Encoder
Encode/decode URLs
HTML Encoder
Encode/decode HTML entities
JWT Decoder
Decode JWT tokens
Unicode Encoder
Encode/decode Unicode
ASCII Converter
Convert text to ASCII codes
Binary Converter
Convert text to binary
Hex Converter
Convert text to hexadecimal
ROT13 Encoder
ROT13 cipher encoder
🔄ConvertersConvert between different data formats
CSV to JSON
Convert CSV to JSON
XML to JSON
Convert XML to JSON
YAML to JSON
Convert YAML to JSON
JSON to TypeScript
Generate TypeScript interfaces
JSON to Java
Generate Java classes
JSON to Python
Generate Python dataclasses
JSON to Go
Generate Go structs
Timestamp Converter
Convert timestamps and dates
Epoch Converter
Convert Unix epoch time
Number Base Converter
Convert between number bases
🎨CSS ToolsCSS generators and utilities
CSS Minifier
Minify CSS code
CSS Formatter
Format and beautify CSS
Color Picker
Pick and preview colors
Color Converter
Convert HEX, RGB, HSL
Gradient Generator
Create CSS gradients
Box Shadow Generator
Generate box shadows
Border Radius Generator
Generate border radius
Flexbox Playground
Visual flexbox editor
Grid Generator
CSS Grid layout generator
Clamp Generator
CSS clamp() calculator
🔍RegexRegular expression tools
✓ValidatorsValidate various data types
⚡GeneratorsGenerate UUIDs, passwords and more
UUID Generator
Generate UUIDs
Lorem Ipsum
Generate placeholder text
Random Number
Generate random numbers
Fake User Generator
Generate fake user data
Password Generator
Generate secure passwords
Color Palette
Generate color palettes
QR Code Generator
Generate QR codes
Barcode Generator
Generate barcodes
📁File ToolsImage and file processing tools
🏷️HTML ToolsHTML formatting and minification
💻Dev ToolsDeveloper utilities and references
⚡Quick ToolsQuick micro utilities
🕐Date & TimeDate and time conversion and calculation tools
Unix Timestamp Converter
Convert Unix timestamps to dates
Date Formatter
Format dates in various patterns
Time Zone Converter
Convert time between timezones
Date Calculator
Add/subtract dates and calculate differences
Relative Time Generator
Generate relative time strings
Cron Expression Generator
Generate and test cron expressions
Date Range Generator
Generate date ranges for testing
ISO 8601 Parser
Parse and validate ISO 8601 dates
Duration Calculator
Calculate time durations
World Clock
Display time in multiple timezones