Misc
Regex Tester
Test regular expressions with real-time matching and highlighting
Diff Viewer
Side-by-side text comparison with color-coded differences
Cron Generator
Build cron expressions with human-readable descriptions and next run times
Barcode Generator
Generate Code128 barcodes from text
Chart Generator
Create bar, pie and line charts using Canvas
Keycode Viewer
Real-time keypress event display showing key, keyCode, code and which
Shield Badge Generator
Generate GitHub-style shield badges with custom label, message and color
Lunar Calendar
Gregorian ↔ Lunar calendar conversion
XPath Tester
XPath expression tester
Stopwatch
Stopwatch and countdown timer
CSV to HTML
CSV to HTML table
String Concat
Multi-line text to language string code
Lottie Preview
Lottie JSON animation preview
FontAwesome Search
FontAwesome icon search
Mind Map
Mind map editor
Text to Image
Text to image via Canvas
3D Data Viz
3D data visualization
DB Designer
Database ER diagram designer
Network Topology
Network topology diagram
Grid Paper
Grid and lined paper generator
Maze Generator
Random maze generator
Meeting Timer
Full-screen meeting countdown
Random Picker
Random name picker with animation
Reaction Test
Reaction speed test
Color Blind Test
Color blindness test (Ishihara)
File Type Detect
File magic bytes detector
PPI Calculator
Screen PPI calculator
Device Sizes
Mobile device UI size reference
HTML5 Test
HTML5 feature detection
ID Photo Sizes
ID photo size standards reference
CRX Parser
Chrome extension CRX URL parser
Emoji Picker
Emoji browser search and copy
Special Symbols
Special symbols collection and copy
ZIP Viewer
ZIP file content viewer
HTML/CSS/JS Filter
Extract JS/CSS/text from HTML
Chinese Zodiac
Chinese zodiac lookup
ID Card Check
ID card number validator and info extractor
Blood Type
Blood type inheritance calculator
BMI/BMR Calculator
BMI and BMR calculator
Fuel Calculator
Car fuel consumption calculator
EV Charge Calculator
EV charging cost calculator
Disk Partition
Hard disk integer partition calculator
Shichen Converter
Chinese 12 Shichen time converter
Check Date
Check date uppercase converter
Shortcut Reference
Frontend dev shortcut key reference
CDN Lookup
JS library CDN URL lookup