Startup Website Launch Checklist 2026: 40 Things to Verify Before Going Live

Why a Pre-Launch Checklist Prevents Expensive Mistakes

Launching a website with broken links, missing metadata, slow load times, or security misconfigurations creates problems that are often harder to fix after launch than before. This checklist covers everything a startup website needs to verify before going live in 2026.

Performance (Critical Before Launch)

• [ ] LCP (Largest Contentful Paint) is under 2.5 seconds on mobile (test with Google PageSpeed Insights)
• [ ] CLS (Cumulative Layout Shift) is below 0.1 (no shifting elements during load)
• [ ] All images are compressed and served in WebP or AVIF format
• [ ] Hero images use priority or loading="eager" — not lazy loaded
• [ ] Fonts load with font-display: swap to prevent invisible text flash
• [ ] JavaScript bundles are split and non-critical code is deferred
• [ ] A CDN is configured for static assets

SEO

• [ ] Every page has a unique <title> tag with primary keyword
• [ ] Every page has a unique meta description under 160 characters
• [ ] robots.txt is configured and does not block crawling of key pages
• [ ] sitemap.xml is generated and submitted to Google Search Console
• [ ] Canonical tags are set on all pages to prevent duplicate content
• [ ] Open Graph and Twitter Card metadata is set for all key pages
• [ ] Structured data (Organization, FAQPage, Article) is implemented and validated
• [ ] All internal links use descriptive anchor text, not "click here"
• [ ] The site does not have broken links or redirect chains

Security

• [ ] HTTPS is enforced sitewide with no mixed content warnings
• [ ] HSTS header is configured
• [ ] Content-Security-Policy header is set (even if permissive initially)
• [ ] X-Frame-Options and X-Content-Type-Options headers are present
• [ ] Admin panels are protected by authentication and not discoverable via public URLs
• [ ] All user input fields validate and sanitise input server-side
• [ ] Rate limiting is in place on forms and APIs

Analytics and Monitoring

• [ ] Google Analytics 4 or Plausible is installed and recording events
• [ ] Google Search Console is verified and sitemap submitted
• [ ] Conversion events are tracked (form submissions, CTA clicks, sign-ups)
• [ ] Error monitoring (Sentry or similar) is configured
• [ ] Server uptime monitoring is active (UptimeRobot, BetterUptime)
• [ ] Core Web Vitals are monitored in production (not just test environment)

Conversion Readiness

• [ ] Primary CTA is visible above the fold on desktop and mobile
• [ ] Contact form has been tested end-to-end (submission → confirmation → email received)
• [ ] Phone numbers and email addresses are clickable on mobile
• [ ] 404 page exists and includes navigation back to key pages
• [ ] Thank you / confirmation pages exist after key conversions
• [ ] Mobile experience is tested on at least 3 different Android devices

Legal and Compliance

• [ ] Privacy Policy page exists and is linked from the footer
• [ ] Terms of Service page is linked where applicable
• [ ] Cookie consent banner is present if using analytics or marketing cookies (GDPR/PDPB India)
• [ ] GST registration number is displayed if legally required for your business category

Final Technical Checks

• [ ] All environment variables are set in production (not using localhost references)
• [ ] DNS TTL has been lowered before launch to allow fast propagation
• [ ] Post-launch redirect from old domain or paths is tested if migrating from another site

Frequently Asked Questions

How long before launch should I run through this checklist? Start 2 weeks before launch. Many items (HSTS configuration, sitemap submission, analytics setup) take a few days to propagate or be verified. Leaving this to the day before launch creates unnecessary stress.

What is the most commonly missed item on website launch checklists? Broken conversion tracking is the most common post-launch discovery. Test every form submission, CTA click, and checkout step in the production environment before announcing the launch.

Do I need a lawyer to write my Privacy Policy? For basic websites collecting email addresses, template privacy policies (properly adapted) are legally sufficient. For businesses handling payments, health data, or children's data, legal review is recommended.

Cyber Milo's team handles full website launch preparation for clients across India. Contact us to discuss your launch timeline.