I've been blogging on multiple platforms (Dev.to, Hashnode, Medium, Ghost) for the past year. The biggest pain: reposting the same article 4 times with manual formatting adjustments for each platform.

That's how AllPub was born.

The challenge wasn't the publishing—most platforms have APIs. The real problem was:

1. Each platform formats markdown differently 2. SEO metadata (titles, keywords, tags) need customization per platform 3. Notion → Platform conversion loses formatting/structure 4. Manual formatting errors are common

The solution:

- Connect your content source (for example notion, dev, hashnode) - AI generates platform-optimized metadata - Smart parsing converts content correctly for each platform - One-click publish to all your platforms simultaneously

Tech stack: Next.js, Supabase, clerk, mailerlite, Vercel. Using Notion's official API + platform APIs (Dev.to, Hashnode, etc).

We're currently in free beta and launching on Product Hunt Friday. Looking for early feedback from the HN community before official release.

Biggest takeaway: Most developer tools fail not because the core idea is bad, but because they underestimate platform-specific quirks and edge cases.

Beta: allpub.co

Questions about architecture, API integration, or Notion API weirdness? Happy to discuss.