How to Look Up DNS Records for Any Domain
Learn how to look up DNS records for any domain, including A, CNAME, MX, and TXT records, with a worked example, propagation, and safety tips.
How to Test an API Without Writing Code
Test an API without writing code: send a GET request, read status and response body, with a worked JSONPlaceholder example and safety tips.
How to Capture a Screenshot of a Web Page (the Right Way)
Capture a screenshot of a web page the right way: full page versus viewport, a worked long-article example, privacy checks, and image quality tips.
How to Find Your Screen Resolution in 10 Seconds
Find your screen resolution in 10 seconds on Windows, Mac, and other devices, with a worked 1920×1080 example and CSS versus physical pixels explained.
How to Measure Anything on Your Screen (Without a Ruler)
Learn how to measure anything on your screen without a ruler, using browser developer tools and a pixel ruler, with a worked 120-pixel button example.
What Is a Matrix Calculator (and When Do You Need One)
What is a matrix calculator and when do you need one? Learn addition and multiplication, with a worked 2×2 example checked by hand.
What Is Speech to Text and When Should You Use It
What is speech to text and when should you use it? Learn how dictation works, how to improve accuracy, and why you must review the output.
How to Use a World Clock to Schedule Across Time Zones
Learn how to use a world clock to schedule across time zones. Start with UTC, check daylight saving time, and confirm the time with attendees.
How to Use an Online Notepad Without Losing Your Notes
Learn how to use an online notepad without losing your notes. Copy before closing, keep a local copy, and treat autosave as a convenience, not a guarantee.
How to Convert Data Storage Units (KB, MB, GB, TB)
Learn how to convert data storage units, understand decimal vs binary units, and see a worked example with a 500 MB file.