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Practical tools for designers and developers. No signup, no tracking — just useful stuff from the team at MoodBook Devs.

Web Performance & SEO Checklist

0 / 22 complete — tick off each item before you ship.

Core Web Vitals

LCP under 2.5s (Largest Contentful Paint)
CLS = 0 (reserve space for all images and embeds)
INP under 200ms (Interaction to Next Paint)

Images

All images served as WebP or AVIF
Below-fold images use loading='lazy'
Images have explicit width and height set

Fonts

Fonts use font-display: swap
Preconnect to third-party origins (fonts, CDN)

JavaScript

JavaScript is code-split — no single bundle > 150kb
Non-critical scripts use defer or async

Caching

Static assets have Cache-Control: immutable
HTML pages use Cache-Control: must-revalidate

Security

HSTS header set (Strict-Transport-Security)
Content-Security-Policy header configured

SEO

Every page has a canonical tag
Every page has OG + Twitter meta tags
Structured data (Schema.org JSON-LD) on key pages
XML sitemap exists and submitted to Search Console
robots.txt exists and points to sitemap

Accessibility

All interactive elements have accessible ARIA labels
Text contrast ratio meets WCAG 2.1 AA (4.5:1)
Focus states visible on all interactive elements

Project Scope Estimator

Answer three questions to get a rough delivery timeline. No commitment needed.

What are you building?

Marketing / Landing pageMulti-page website (5–10 pages)Web app / SaaS dashboardE-commerce storeFull product (design + build)

Design

I have a Figma design readyI need UI/UX design included

Integrations

None — static content onlyCMS or databaseAuth, payments, or third-party APIs

Estimated delivery

1–2 weeks

This is a rough guide. For an accurate quote, tell us about your project.

Built by MoodBook Devs — a web design and development agency. See our portfolio of web design and development projects.