Guides & Tutorials
In-depth guides, best practices, and tutorials for developers, designers, and marketers. Learn about the tools you use every day.
Showing 12 of 13 guides
UTM Parameters Explained: Track Campaigns Without Breaking Analytics
How to build UTM tracking URLs the right way: utm_source vs utm_medium vs utm_campaign, naming conventions that keep reports clean, encoding mistakes to avoid, and QR-code tracking.
Open Graph Meta Tags: Control How Your Links Look When Shared
How Open Graph tags work and how to get them right: the four required properties, og:image sizes that render everywhere, Twitter card fallbacks, caching traps, and a debugging checklist.
September 19, 2026·6 min readRead moreSecurityPassword Entropy Explained: The Math Behind Truly Strong Passwords
What password entropy actually measures, the length × character-pool formula, crack-time tables with honest assumptions, why human passwords fall short, and the NIST rules that follow from the math.
September 19, 2026·5 min readRead moreDeveloperUnix Timestamps Explained: UTC, Timezones & Common Pitfalls
What a Unix timestamp really is, why the epoch starts in 1970, how to convert timestamps to dates (and back) correctly, and the timezone and 2038 bugs that catch everyone out.
September 18, 2026·4 min readRead moreSecurityFile Signatures & Magic Bytes: How to Identify Any File's Real Type
Every file starts with a signature that reveals what it really is. Learn the most common magic bytes, why extensions lie, and how to inspect files safely in your browser.
September 16, 2026·4 min readRead moreDeveloperMIME Types Explained: What "Content-Type" Actually Tells the Browser
What a MIME type is, where it comes from, why mismatches break downloads and enable XSS — and how to detect the real MIME type of any file, offline, in your browser.
September 10, 2026·4 min readRead moreDesignFont Accessibility: Sizes, Weights & Legibility Rules That Matter
How to choose genuinely readable fonts: minimum sizes, WCAG resize and spacing rules, line length, weight choices — and how to test any font pairing in seconds.
September 4, 2026·5 min readRead moreNetworkWhat an IP Address Lookup Actually Tells You (And What It Doesn’t)
How IP geolocation works, how to find your own IP address on any device, why a lookup can return the wrong city, and how to read ISP and ASN data before you trust it.
August 3, 2026·4 min readRead moreSEOWhat Is a 301 Redirect? How to Check Redirects (Free Tool)
301 redirects explained: what they are, when to use them, how they affect SEO, and how to check whether a URL redirects correctly with a free redirect checker.
August 3, 2026·3 min readRead moreProductivityHow to Create an Email Signature for Gmail & Outlook (Free)
Step-by-step guide to creating a professional email signature with an HTML signature generator — including Gmail and Outlook setup, size limits, and design best practices.
August 3, 2026·3 min readRead moreSEOCanonical URLs Explained: How to Check & Fix Duplicate Content
What a canonical URL is, why duplicate content hurts your rankings, how to check the canonical of any page, and how to fix canonical mistakes on your site.
August 3, 2026·3 min readRead moreSEORobots.txt: How to Create One That Googlebot Loves
How robots.txt works, what to block and allow, how to reference your sitemap, common mistakes, and how to generate a valid robots.txt file in seconds.
August 3, 2026·3 min readRead morenewest first · 1 more below