Publishing

Substack Website Analysis

substack.com

AI-powered website review · Last analyzed April 9, 2026

Overall Grade

D
55/100

Substack's homepage loads slower than a dial-up modem while simultaneously telling you to be fast and independent.

About Substack's Website

Substack (substack.com) is a publishing website. Our AI analyzed its design, copywriting, SEO optimization, performance metrics, and user experience to generate this comprehensive website score.

With an overall score of 55/100 and a grade of D, here's what our AI found:

Detailed Breakdown

🖱️

Substack UX Score

48

Buttons with no names and touch targets you need a stylus to hit—accessibility theater at its finest.

Your accessibility failures read like a checklist of what NOT to do: unnamed buttons, improper touch target sizing, missing main landmark, broken heading hierarchy, color contrast nightmares. Keyboard users and screen reader users are completely locked out. This isn't cute minimalism—it's negligence. Add ARIA labels to interactive elements, ensure touch targets are 48x48px minimum, establish a proper heading hierarchy (H1→H2→H3), and fix your color contrasts. Your 'independent voices' tagline rings hollow when you've silenced people using assistive technology.

🔍

Substack SEO Score

92

Your SEO is pristine—too bad your site can't load fast enough for people to read it.

Solid OG tags, proper meta description, and good foundational SEO hygiene. But here's the cruel irony: Google's Core Web Vitals are tanking your rankings anyway. Your 28-second LCP (Largest Contentful Paint) is a death knell—most pages load in 2-3 seconds. You're technically SEO-correct but practically invisible because Core Web Vitals are ranking factors. Fix your JavaScript bloat and rendering issues, and your excellent SEO foundation will actually matter.

✍️

Substack Copy Score

48

52 words of copy on the homepage—that's less ambition than a fortune cookie.

Your tagline 'The app for independent voices' is so generic it could describe a Discord server. You're missing critical copy that explains *why* someone should care in the next 3 seconds. Where's the value prop? The social proof? You've got a CTA but no compelling reason to click it. Write copy that sells the dream, not just the tool—show readers what they'll actually build, earn, or create. Right now, new visitors are bouncing because you haven't given them a reason to stay.

🎨

Substack Design Score

62

Minimalist design is great until your site feels like it's still loading.

You've nailed the Apple aesthetic of 'less is more,' but your execution screams 'we ran out of design budget.' With zero H1 tags and only an H3 buried in the markup, your page hierarchy has the structural integrity of a house of cards in a hurricane. The contrast issues mean colorblind users are squinting harder than they do at an eye exam. Add a proper heading structure, fix your color contrast ratios to WCAG AA standards minimum, and actually leverage that minimalist design instead of letting it become invisible.

Substack Performance Score

24

Your site loads like you're still running on Netscape Navigator.

37/100 performance score with 28 seconds to LCP is absolutely brutal. You're loading 138 external scripts and 14 stylesheets—it's like inviting every vendor in town to your birthday party. Your JavaScript is executing for so long the user has time to make coffee. Reduce render-blocking resources, defer non-critical JavaScript, implement critical CSS inlining, and trim unused CSS. Your competitors are loading in under 2 seconds; you're a bloated mess that contradicts your entire 'independent writers' promise of accessibility.

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