70+ free online tools. No signup required.
🔥 Popular Tools
No matching tools found. Try different keywords.
Development / Code Tools (29)
JSON Formatter
Format, compress, validate
JSON Escape/Unescape
String escape & unescape
JSON Diff
Deep structure comparison
JS Formatter
JavaScript code beautifier
HTML/XML Formatter
Code beautify & minify
HTML Encoder/Decoder
Entity encode & decode
HTML to JS
HTML to JavaScript string
HTML Table Generator
Visual table editor
JS Obfuscator
JavaScript code protection
Code Highlighter
Syntax highlighting
Code to Image
Code snippet to shareable image
SQL Formatter
SQL beautify & minify
Markdown Editor
Live preview Markdown
Regex Tester
Real-time match & capture
XML/JSON Converter
Format conversion
CSS3 Generator
Border-radius, shadow, transform
CSS Button Generator
Visual button designer
Crontab Generator
Visual cron expression
Px/Rem Converter
CSS unit conversion
ASCII Table
128 ASCII character reference
HTTP Status Codes
HTTP status code reference
MIME Types
File extension to MIME lookup
Keyboard Tester
Key press detection & info
Screen Info
Viewport/resolution/DPR
CSV/JSON Converter
CSV & JSON format conversion
JWT Decoder
JWT Token decode & inspect
CSS Formatter/Minifier
CSS beautify & compress
HTML Minifier
HTML code compressor
JS Minifier
JavaScript code compressor
Text Processing (8)
Text Counter
Characters, words, lines
Text Diff
Highlight differences
Case Converter
camelCase, snake_case, etc.
Unicode Converter
Unicode/Text/UTF-8
Chinese Pinyin
Hanzi to Pinyin with tones
Simplified/Traditional
Chinese character conversion
Text Sort & Deduplicate
Sort/deduplicate/shuffle lines
Lorem Ipsum
Placeholder text generator
Encoding & Conversion (7)
Image Tools (9)
Image Crop & Compress
Crop, compress, convert
Base64 to Image
Base64 string to image
Image Format Converter
WebP/PNG/JPG conversion
Image Merge
Horizontal/vertical stitch
Image Resizer
Resize & scale images
SVG to PNG
Vector to bitmap
Image Watermark
Text watermark & opacity
Placeholder Image
Custom size placeholder
Color Blind Simulator
Color vision deficiency sim
Color Tools (5)
Calculator Tools (13)
Online Calculator
Standard arithmetic
Scientific Calculator
Trig, log, power functions
BMI Calculator
Body mass index
Date Calculator
Date add/subtract & interval
Compound Interest
Investment returns calculator
Mortgage Calculator
Equal installments/principal
Workday Calculator
Exclude weekends
RMB Uppercase
Number to Chinese currency
Length Converter
Meter/cm/inch conversion
Storage Converter
B/KB/MB/GB/TB conversion
Temperature Converter
℃/℉/K conversion
Weight Converter
kg/g/lb/oz conversion
Area Converter
m²/ft²/acre conversion
Generators & Utilities (15)
Password Generator
Secure random passwords
Random String
Custom charset batch generate
Random Number
Custom range random numbers
QR Code Generator
Text/URL to QR code
QR Code Scanner
Image upload / camera scan
Countdown Timer
Target time countdown
Online Stopwatch
Precise timing & laps
MAC Address Generator
Random MAC address batch gen
Favicon Generator
Generate icons from text/emoji
Mermaid Editor
Flowchart/sequence/gantt
Chart Generator
Bar/line/pie chart maker
Markdown to Image
Render Markdown as PNG
PDF Viewer
View PDF files online
Image to PDF
Merge images into PDF
PDF to Image
Convert PDF pages to PNG/JPG