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Find & Replace
Text ToolsSearch and replace text patterns with regex support. Find matches instantly, preview changes, and apply replacements wit...
Speaker Tester
Browser & Device TestingTest your speakers and headphones with stereo channel tests, frequency sweeps, and audio playback. Check left/right chan...
Keyboard Tester
Browser & Device TestingTest your keyboard for broken keys, ghosting, and rollover issues. Supports Full (100%), TKL (80%), and MacOS layouts wi...
Screen Size Calculator
Browser & Device TestingCalculate physical screen dimensions, pixel density (PPI), and compare different monitors, laptops, tablets, and phones...
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Test your laptop touchpad functionality - detect taps, gestures, multi-touch, and pointer tracking i...
Perform quick calculations with standard and scientific modes. Supports keyboard input, calculation...
Count characters, words, sentences, and paragraphs instantly. Check text against platform limits for...
Test your keyboard for broken keys, ghosting, and rollover issues. Supports Full (100%), TKL (80%),...
Test your monitor's refresh rate with visual animations. Compare 30Hz, 60Hz, 120Hz side by side and...
Check your public IP address, location, ISP, and network information instantly. View your IPv4 and I...
Test your typing speed and accuracy. Measure WPM (words per minute), CPM (characters per minute), an...
Test your speakers and headphones with stereo channel tests, frequency sweeps, and audio playback. C...
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Remove duplicate lines from text instantly. Compare by case, trim whitespace, keep first or last occ...
Search and replace text patterns with regex support. Find matches instantly, preview changes, and ap...
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, and programming formats like c...
Test your internet connection speed instantly. Measure download, upload, ping latency, and jitter wi...
Check your internet connection status and quality. Monitor network health with real-time diagnostics...
Check which Web APIs and features your browser supports. Scan 100+ features across storage, graphics...
Generate and analyze User Agent strings for any browser, OS, and device. Perfect for developers, tes...
View detailed information about your browser, device, operating system, and system settings. Include...
Find geolocation and network information for any public IP address. See country, city, ISP, and view...
Check your public IP address, location, ISP, and network information instantly. View your IPv4 and I...
Test your touchscreen for dead zones, multi-touch support, and responsiveness. Draw mode for accurac...
Test, calibrate, and fix your display with 12 professional tools: Dead Pixels, Master Pattern, SMPTE...