Little Useful
A free collection of little useful tools
QR Code
Generate QR codes for URLs, Wi-Fi, events, and more
Color Picker
Pick a color and view its Hex and RGB values
Reading Level
Estimate readability scores for a passage of text
Timestamp
Convert between timestamps and dates across timezones
Scratchpad
Write a quick note to yourself
Capitalize Title
Format a title with appropriate capitalization
Event Countdown
Track time until upcoming events
Timer
Run a countdown timer
Process JSON
Run jq expressions on JSON data
Contrast Check
Check colors against WCAG contrast criteria
Regex Test
Test regular expressions against lines of text
Set Comparison
Compare two lists to find unique or shared entries
Counter
Count items in a list by frequency
Randomizer
Flip coins, generate random numbers, or pick items from a list
BMI
Calculate adult BMI given weight and height
Moon Phase
See the moon phase for any date