Blog
Practical SEO and web-dev guides — no fluff, with the free tools to act on them.
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Cron Syntax Cheat Sheet: Fields, Examples & Special Strings
A clear cron cheat sheet: what each of the five fields means, the special characters, @daily-style shortcuts, ready-to-use schedule examples, and the day-of-week gotcha that catches everyone.
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Regex Cheat Sheet: Syntax, Patterns & Copy-Paste Examples
A practical regular expression cheat sheet — anchors, character classes, quantifiers, groups, and lookarounds — plus ready-to-use patterns for email, URLs, dates and more, and the gotchas to avoid.
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How JWTs Actually Work: Header, Payload, Signature & Common Mistakes
A developer-friendly explainer of JSON Web Tokens — what the three parts really are, what signing does and does NOT do, how validation works, and the security mistakes that cause real breaches.
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How Font Files Actually Work: TTF, OTF, WOFF & WOFF2 Explained
A developer-friendly look at what is really inside a font file — sfnt tables, TrueType vs CFF outlines, and why WOFF/WOFF2 are just compressed containers. Plus when converting between formats is lossless and when it is not.
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Git Cheat Sheet: The Commands You Actually Use (with the Gotchas)
A practical Git cheat sheet grouped by what you are trying to do — commit, branch, undo, stash, sync, and recover — with the gotchas that bite people. Copy-paste ready.
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Core Web Vitals Explained: LCP, INP, and CLS for Developers
What LCP, INP, and CLS actually measure, the thresholds that matter, and the real causes behind each failure — written for developers, with concrete fixes.
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The Best Free SEO Audit Tools for Developers (No Signup)
An honest roundup of free SEO audit tools for developers — including competitors — judged on depth, signup friction, and the technical checks that actually matter.
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The Complete On-Page SEO Checklist (45 Checks, Free Tools Included)
A practical, developer-focused on-page SEO checklist for 2026 — meta tags, headings, content, links, images, structured data, Core Web Vitals, security headers, and crawlability, each with a free tool to check it.
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A Free SEOptimer Alternative — No Email, No Paywall
Looking for a free SEOptimer alternative that does not gate the report behind an email signup? Here is an honest comparison and a no-signup, browser-based option for developers.
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