Articles & Tips
Practical guides and tips for the web, productivity, and security - concise and useful.
ChatGPT Free vs Plus: is it worth paying?
A practical comparison of ChatGPT Free and ChatGPT Plus for everyday users. See what changes with limits, models, files, images, privacy settings, and the kinds of work where Plus can make sense.
Why a QR code is not working and how to fix it
Cannot scan a QR code? The most common causes are weak contrast, missing quiet zone, small size, blurry print, or too much data.
ChatGPT in English: how to get started
ChatGPT can help with writing, learning, planning, and everyday questions in English. Here is how to start, how to write better prompts, and what to watch out for with privacy and accuracy.
What size should a QR code be for print?
A QR code on a business card, flyer, and poster cannot use the same size. The right size depends on scanning distance, code density, print quality, and contrast.
Static vs dynamic QR code: what is the difference?
A static QR code stores the content directly in the image. A dynamic QR code usually points to a short link that can redirect somewhere else later. Each has a different use.
