What Is a Unix Timestamp? Converting Epoch Time to Dates
Learn what a Unix timestamp is, how to tell seconds from milliseconds, convert epoch time to dates by hand or in code, and why 2038 matters.
Text & Data
Encodings, data formats, character counts, timestamps, color codes, and number systems for writers and developers.
What Is Base64? How Base64 Encoding Works and When to Use It
Learn what Base64 is, how it turns bytes into text step by step, why output grows by about 33%, what = padding means, and when to use it.