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Recent Articles
How to Remove Empty Lines Cleanly, Without Breaking Paragraphs or Lists
This article shows how to remove empty lines from text safely, including whitespace-only lines, and how to preserve readable formatting by collapsing multiple blank lines into one. It includes real examples for lists, paragraphs, and logs, plus troubleshooting tips.
How to Randomize a List Fairly, Pick Winners, and Reproduce Results (Seeded Shuffle)
This tutorial shows how to randomize lists fairly using an unbiased shuffle, how to keep header lines fixed, how to pick N winners without repeats, and how to use a seed to reproduce the same randomized result for audits and transparency.
How to Find Your Real Origin IP Behind Cloudflare, Safely (and How to Fix Leaks)
Cloudflare hides your origin IP only for traffic that goes through Cloudflare’s proxy. That usually means your A and CNAME records for the website are “proxied” (orange cloud). But some DNS records cannot be proxied, and email is the biggest one.
CSS Minifier and Beautifier: When to Minify, When to Beautify, and How to Avoid Breaking Your Layout
This guide explains how to minify CSS for faster delivery, beautify CSS for debugging, and remove comments safely without breaking behavior. It includes practical WordPress workflow advice, common failure cases like broken braces and unterminated comments, and a verification checklist after deploy
SSL Certificate Chain Errors: What They Mean, and How to Fix Them (With a Live Checker)
This article breaks down the most common SSL certificate chain errors, what each error actually means, and the exact fixes that resolve them, including deploying fullchain files, correcting intermediate certificates, fixing hostname mismatches
Why IPv6 Ping Fails, 10 Real Causes and Fixes (With Live Tests)
This guide explains why IPv6 ping often fails even when a website is online, then walks through 10 real-world causes like missing AAAA records, broken IPv6 routing, ISP path issues, and ICMPv6 firewall blocks. It shows how to test correctly using a live IPv6 ping tool, how to tell DNS problems from
SPF, DKIM, DMARC Explained (With Live Checks), plus Fixes That Actually Work
SPF tells receivers which servers are allowed to send mail for your domain. DKIM adds a cryptographic signature to outgoing emails, receivers verify it using your public key in DNS. DMARC tells receivers what to do if SPF and or DKIM fail, and it enforces alignment with the visible From domain.
How to Check DNS Propagation, and What TTL Actually Does (With Live Checks)
When people say “DNS propagation”, they usually mean that some DNS resolvers still have the old answer cached. If you understand TTL and how to verify what different resolvers are serving, you stop guessing and start fixing.
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