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R‑Core · Tools
R‑Core Utility Suite
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Tools
A collection of handy utilities — all in one place.
Calculator
Basic arithmetic with keyboard support
Notes
Quick notes saved to your browser
No notes yet. Add one above!
File Converter
Upload images, audio, or video and convert between formats
Click to upload an image, audio, or video file
Upload a file to convert between formats
File Compressor
Compress images, audio, and video with resolution/quality options
Click to upload an image, audio, or video file
Upload a file to compress
Password Generator
Strong, random passwords with custom options
Length:16
Click generate…
QR Code Generator
Create QR codes from text or URLs
Enter text and generate
Unit Converter
Length, weight, temperature, volume, speed, area
From
To
= 1
Weather
Current conditions & 7‑day forecast for any city
Search for a city to see weather
Media Player
Play images, videos & audio with custom controls & audio visualizer
Click to upload from your device
Upload a file or paste a URL
Color Palette Generator
Generate complementary, analogous & triadic color schemes
Enter a color and click Generate
Gradient Generator
Create and preview CSS gradients
Color 1
Color 2
Direction:
Image Filters
Apply creative filters to your images
Upload an image to apply filters
Upload an image to apply filters
Markdown Editor
Write Markdown with live preview
JSON Formatter & Validator
Format, validate, and beautify JSON
Text Diff Comparator
Compare two texts side-by-side
Original
Changed
Font Preview
Preview text in different Google Fonts
Font
Size
Weight
The quick brown fox jumps over the lazy dog
World Clock
Track time across multiple timezones
Add timezones to track
Countdown Timer
Count down to any date or event
00
Days
00
Hours
00
Minutes
00
Seconds
Date Math
Calculate differences between dates
Date 1
Date 2
Days
0
Weeks
0
Months
0
Years
0
Add days to Date 1:
Base64 Encoder / Decoder
Encode and decode Base64 strings
Upload file
Regex Tester
Test regular expressions in real-time
Pattern
Flags
UUID Generator
Generate UUID v4 identifiers
Count:
Click Generate to create UUIDs
HTTP Status Codes
Browse and search HTTP status codes
System Info
Your browser, screen, and device information
Text to Speech
Listen to text spoken aloud
Voice:
Rate:1x
Lorem Ipsum Generator
Generate placeholder text for designs
Count:
Stopwatch
Precise lap timing with split times
00:00:00.00
Map Explorer
Interactive map with search & route planner
Click on the map to add a waypoint · Right-click to remove