Blog
Short, practical guides that pair with Toolshelf's browser-based tools. No fluff — just enough context to solve the problem and open the right utility.
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IPv4 vs IPv6: What Developers Should Know
A practical overview of IPv4 and IPv6 addressing, CIDR basics, and when an IP converter helps during network debugging.
Read articleHow to Compare Text Online
Practical tips for comparing two versions of text, reading diffs, and catching wording changes without uploading documents to a server.
Read articleWhat Is a User-Agent String?
Learn what HTTP User-Agent strings contain, why they matter for debugging, and how to parse browser, OS, and device details.
Read articleJavaScript Regex Cheat Sheet
A practical JavaScript regular expression cheat sheet covering flags, groups, anchors, and common patterns — with a link to test them live.
Read articleWhat Is a Unix Timestamp?
A clear explanation of Unix epoch time, seconds vs milliseconds, and how to convert timestamps to local and UTC dates.
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