Andrei Alexandrui
2026Co-founder / Engineering Lead
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Renda

Turns Claude Design exports into decks, carousels and PDFs

tryrenda.com →

People were screenshotting their Claude Design work and posting it blurry. That was the whole problem. Renda takes the export, standalone HTML or a project ZIP, and gives back clean PNGs, LinkedIn carousels, PDFs and PowerPoint decks. I built the technical side. My co-founder found the people. It passed a thousand users without us paying for a single one.

  • 1000+ users and recurring subscribers across multiple countries, all through organic acquisition
  • Architected an AI plus runtime split: an LLM emits a small JSON render recipe that a fixed, fully-tested headless-browser runtime executes, so new design patterns need no new code
  • Migrated inference from Azure OpenAI to Google Vertex AI with zero user-facing downtime, running both providers in parallel during cutover
  • Built the provider layer as an ordered try-list behind one interface, making vendor changes a config-only edit with an environment-variable rollback path
  • Built the whole stack on Cloudflare Workers edge compute: Hono API, Browser Rendering, R2 and KV with TTL expiry, and cron triggers
  • Wrote OOXML emitters from scratch to produce valid .pptx and .pdf output without third-party render services
  • Shipped the full commercial layer: Supabase Auth, Polar checkout with HMAC webhook verification, quotas, anti-abuse caps, and referral and affiliate programmes
  • Drove development with Claude Code as an agentic pair-programmer, spec first and test first, keeping architecture and verification decisions with me

TypeScript, Cloudflare Workers, Hono, React 19, Vite, Google Vertex AI, Supabase, Polar

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Fig. 1
Renda app, drop a Claude Design export to render
Renda app, drop a Claude Design export to render
Fig. 2
Screenshot versus Renda PNG export quality
Screenshot versus Renda PNG export quality
Fig. 3
Each slide rendered as its own clean PNG
Each slide rendered as its own clean PNG
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Andrei Alexandru

Andrei Alexandru, AI Engineer, London, UK.

alexandruciprian61@gmail.com

LinkedIn · GitHub · CV

Set in Literata and IBM Plex Mono.

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