From the NordicCDN blog
Performance, caching, security and the craft of running a fast website or webshop.
What is a WAF, and does your site really need one?
A web application firewall sounds like enterprise overkill until the day it quietly blocks the attack that would have ruined your week. Here is what a WAF does and who actually needs one.
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Core Web Vitals in 2026: LCP, INP and CLS without the jargon
Three acronyms decide a chunk of how Google ranks you and how your site feels to use. Here is what LCP, INP and CLS really measure — and the changes that actually move them.
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How to speed up a slow WordPress site (without a single plugin)
WordPress out of the box is slow for boring, fixable reasons. Here is how to make it genuinely fast — by moving the work to the edge instead of stacking yet more plugins on top.
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GDPR and CDNs: keeping European data in Europe
A CDN sits between your visitors and your site, which means their data passes through it. Here is what GDPR actually asks of you, and how to stay on the right side of it.
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HTTP/3 and QUIC, explained (and why your site feels faster)
Every few years the web gets a new version of HTTP, and HTTP/3 is the biggest change in a while — it threw out TCP. Here is what that means in plain terms, and why your phone notices.
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How to stop bots and scrapers from eating your bandwidth
A surprising slice of your traffic is robots — and not the good kind. Here is how to spot the scrapers eating your bandwidth, tell them apart from Google, and shut them out at the edge.
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What is a CDN, and do you actually need one?
CDN gets thrown around like everyone already knows what it means. Here is the plain-English version — what it does, how it works, and an honest answer to whether your site needs one.
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Translate your entire website in a few clicks
Going multilingual used to mean plugins, exported strings and a translation-agency invoice. Here is how to put your whole site in another language at the edge — in about the time it takes to make coffee.
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Caching a WooCommerce store without breaking the cart
Full-page caching and a live shopping cart sound like sworn enemies — until you bypass the right cookies. Here is exactly how to make a WooCommerce store fly while checkout keeps working perfectly.
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