ePub Fixer
Validate a reflowable EPUB for KDP, Kindle Previewer, and EPUBCheck structure errors, with checked repair only when the fix can be verified.
StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 10 July 2026; the live site may have changed since.
ePub Fixer scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Visible gaps: missing several security headers and incomplete email security.
Launched on Hacker News on July 10, 2026. The site is served through Cloudflare, with a domain registered 10 weeks before launch. Our crawler found 8 technologies on this site, covering CDN, CSS frameworks, DNS providers, and email forwarding. The stack includes Next.js, React, and Tailwind CSS.
It's also on one of the most common stacks we track, shared by 3,608 launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (8)
| CDN |
Cloudflare
|
| DNS |
Cloudflare DNS
|
| Protocol | HTTP/3 |
| Email forwarding |
Cloudflare Email Routing
(2)
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(3)
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (1)
| Key | Size | Detected as |
|---|---|---|
| epubfixer_visit_id | 36 B | - |
Readiness Breakdown How?
Performance How?
⚠ 2 images: 2 oversized, 2 without width/height
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI onboarding signals | +5 |
| AI palette signals | +5 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.