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Practical guides for common development workflows and technical concepts.
How big a printed QR code needs to be, the 10:1 distance rule, the pixel maths for 300 DPI, and why the quiet zone matters more than the size.
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Why some "free" QR codes stop working after a trial, how to tell which kind you have, and how to get editable codes without renting them from anyone.
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Sometimes you just need to hand someone a file. Here is how to do it without accounts, installs, or an upload that outlives the conversation.
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Stop emailing links to yourself. Five ways to get a URL, code, or paragraph from your phone onto your computer in a couple of seconds.
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Six ways to move photos, documents, and archives between your phone and your computer without a USB cable, and how to pick the right one.
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Learn how to format and validate JSON faster, fix common syntax errors, and debug API responses with a simple workflow developers can use every day.
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