Run a quick browser-based download speed check using Cloudflare's public speed endpoint.
Download
-- Mbps
Payload
--
Duration
--
Use a larger download for more stable results.
The browser downloads a test payload and measures duration.
The result shows approximate download throughput.
Run a quick browser-based download speed check using Cloudflare's public speed endpoint. The internet speed test runs in your browser unless the page states that it uses an external service.
Color Contrast Checker
Check WCAG AA and AAA contrast ratios between two colors to ensure your design meets accessibility standards.
Credit Card Validator
Validate credit card numbers using the Luhn algorithm.
Diff Checker
Compare two texts and highlight added, removed, and unchanged lines instantly.
Email Validator
Validate email address format and check for common issues.
Phone Number Validator
Validate phone number format with international support.
Readability Score
Analyze text readability with Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index.