Blog
Practical advice to improve your website
Performance, SEO, accessibility and security: hands-on guides written by the Codanalyst team, with code examples you can reuse as is.
- Performance
Core Web Vitals: understand LCP, INP and CLS and finally fix them
Three metrics decide whether Google considers your site fast. What they really measure, the thresholds to aim for and the fixes that work most often.
4 min
- Security
Six HTTP security headers to enable on your website
A few lines of server configuration are enough to block many common attacks. Here are the ones that matter, and how to add them without breaking anything.
3 min
- Accessibility
Web accessibility: the mistakes found on almost every website
Low contrast, images without alternatives, silent buttons… The most widespread issues are also the easiest to fix. Here's an overview.
3 min
- SEO
Technical SEO: the checklist to run before every launch
A forgotten noindex, a misconfigured canonical or a redirect loop can wipe out months of work. The checklist we use ourselves.
3 min
- Performance
Optimizing your website's images: a practical guide
Images often weigh more than the rest of the page combined. Formats, dimensions, lazy loading: the settings that make a site lighter without hurting how it looks.
3 min
- Accessibility
Accessible forms that are easier for everyone to fill in
Labels, error messages, autocomplete, keyboard navigation: the details that make visitors finish your form instead of giving up.
3 min
- Security
Outdated JavaScript libraries: the vulnerability nobody looks at
An old version of jQuery or an abandoned plugin can be enough to expose your visitors. How to take inventory, update without breaking things and secure your CDNs.
3 min