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A favicon is the small icon in a browser tab, bookmark list, and search result. It is also the icon people see when they add your site to their home screen. A missing one looks unfinished, and getting
A data URL lets you embed a file's contents directly in your HTML or CSS instead of linking to a separate file. Images encoded as Base64 are the classic example. It can save a network request, but it
A QR code that won't scan is worse than no QR code at all. Most failures come from a handful of avoidable mistakes: too small, too little contrast, too much data, or a logo that covers too much. These
JSON is great for nested data; spreadsheets want flat rows and columns. Converting between them is easy when your JSON is a list of similar objects, and trickier when it is deeply nested. Here is how
JSONPath is a query language for picking values out of a JSON document, in the same spirit that XPath works for XML. It shows up in API tools, monitoring systems, Kubernetes, and test frameworks. It b
JSON Schema is a standard way to describe what valid JSON looks like: which fields exist, what type each one is, and what values are allowed. Once you have a schema you can validate incoming data, gen
When you consume an API in TypeScript, writing the types by hand from a JSON response is tedious and error-prone. A generator can turn a sample response into interfaces in seconds. It is a great start
Comparing two JSON documents with an ordinary text diff often produces a wall of red and green for changes that don't matter. Reordered keys, different indentation, or a minified file on one side are
CSS lets you write the same color in several ways. They all produce the same pixels, so the difference is how convenient each format is to read and tweak. Understanding all three makes it easier to wo