Blog
Laws, performance and security of websites, in practice.
Sourced guides to website accessibility (WCAG 2.2 and Brazil's LBI), privacy under Brazil's LGPD, Core Web Vitals, security and technical SEO.
Posts
- Privacy
Pixels and Brazil's LGPD: what data leaves your website
What Meta Pixel, Google tag, TikTok Pixel and session recorders collect, when that is personal data under Brazil's LGPD and how to load them after consent.
- Accessibility
WCAG 2.2 level AA: what changed and how to check it
WCAG 2.2 added nine new criteria and removed 4.1.1. Which ones count for level AA, how to test each one and how they map to Brazil's NBR 17225.
- Accessibility
Do accessibility overlays meet the law?
Accessibility widgets and overlays do not make a site conform to WCAG or Brazil's NBR 17225. What they do, their limits and what actually fixes a site.
- Accessibility
Accessible forms: labels, errors and keyboard
Associated labels, errors described in text, keyboard, visible focus and autocomplete: what WCAG 2.2 asks of a form, with HTML examples.
- Accessibility
Color contrast: how to meet WCAG criteria 1.4.3 and 1.4.11
Text needs 4.5:1; large text and UI components need 3:1. What counts as large text, how to calculate contrast, the exceptions and how to test.
- Technical SEO
Crawling and indexing: robots.txt, sitemaps and HTTP status
Why Google doesn't index a page: robots.txt, noindex, canonicals, sitemaps, HTTP status, JavaScript and the Search Console reasons, with a checklist.
- Security
Website security basics: HTTPS, headers and scripts
What to check first, from the outside, on a public website: HTTPS, TLS, certificate, headers, exposed files, versions, third-party scripts and cookies.
- Performance
Core Web Vitals: what LCP, INP and CLS are and how to improve them
What LCP, INP and CLS measure, the good and poor thresholds, how Google uses these metrics in Search and where to find your site's data.
- Privacy
Brazil's LGPD for websites: cookies, consent and third-party scripts
What Brazil's LGPD and the ANPD guide require of a site with cookies, analytics and pixels: legal bases, banner, cookie policy and a checklist.
- Accessibility
LBI and NBR 17225: what Brazilian law requires of a website
Article 63 of Brazil's LBI requires accessible websites from companies based or represented in Brazil. What NBR 17225 asks and how to check common failures.
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