ToolZone Guides
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How Many Words Is a 5-Minute Speech?A 5-minute speech is roughly 625–750 words at a normal speaking pace. See word counts for 1, 3, 5, 10 and 20-minute talks, plus how to check yours instantly.How to Validate JSON and Fix Common Syntax ErrorsLearn how to validate JSON and fix the most common errors: trailing commas, single quotes, unquoted keys, comments and unescaped characters — with examples.Base64 Is Not Encryption: What It Actually DoesBase64 is reversible encoding, not encryption. Learn what Base64 is for, when to use it, its 33% size cost, and safe alternatives for protecting data.How to Decode a JWT SafelyLearn what is inside a JSON Web Token, how to decode the header and payload, how to read exp and iat claims, and why decoding is not verification.SEO-Friendly URL Structure: Rules and ExamplesHow to structure URLs for SEO: slug length, hyphens vs underscores, stop words, trailing slashes, parameters and safe URL changes with redirects.Meta Description Length: How Long Should It Be?Keep meta descriptions to about 150–160 characters on desktop and 120 on mobile. See pixel limits, truncation rules and a template for writing them fast.How Strong Is My Password? Length, Entropy and Real RulesPassword strength explained: why length beats complexity, how entropy works, what makes a passphrase strong, and how to generate secure passwords safely.Unix Timestamp ExplainedWhat a Unix timestamp is, how to tell seconds from milliseconds, how time zones and leap seconds work, and how to convert epoch time to a readable date.HEX vs RGB vs HSL: Which Color Format Should You Use?Compare HEX, RGB, HSL and CMYK color formats, learn when each is best, how alpha works, and how to convert between them without losing accuracy.Regex Cheat Sheet: Patterns You Actually UseA practical regex cheat sheet: character classes, quantifiers, anchors, groups, lookarounds, flags and ready-made patterns for email, URLs, dates and IDs.UUID Generator Comparison: v1 vs v4 vs v7Compare UUID versions and UUID generator tools side by side: v1, v4, v6, v7 and ULID, with a practical example of generating and using UUIDs as database primary keys.Decoding vs Verifying a JWTDecoding a JWT reads its claims; verifying it proves the token is authentic. See the difference with a worked example, the claims that matter, and common auth mistakes.How to Compare Two Texts and Find the DifferencesCompare two blocks of text, code or config line by line: how diff algorithms work, when to use word vs line diff, and a practical example of catching a config drift.URL Slug Best PracticesHow to turn a title into a clean URL slug: length, stop words, accents and Arabic transliteration, dates, uniqueness, and what to do when a slug has to change.