DRAVVT

Maker. CurrentlyMaker. Currently Updating ReadAloud

I'm Drago Herrera, a full‑stack developer in Berlin. I build apps, AI tools and websites, with a strong focus on detail.

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What I do

ReadAloud

Free app for Windows and Linux that reads your PDFs aloud with neural voices and highlights the paragraph being spoken. It runs on your computer, no internet needed.

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From the blog

AI agents, tools and technology explained clearly and with sources, so you can use them in your own work. See all articles →

Building your website with AI: what it does well and the mistakes it makes on its own

Building your website with AI: what it does well and the mistakes it makes on its own

Building a website with AI is fast and free, but on its own it leaves gaps: made-up facts, security holes and no SEO. What it does well and what it doesn’t.

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Reading with ADHD, dyslexia or autism: what actually helps

Reading with ADHD, dyslexia or autism: what actually helps

Listening while you read helps with reading and studying with ADHD, dyslexia or autism. What the research says and how to do it for free with your PDFs.

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What are AI agents? Explained with examples

What are AI agents? Explained with examples

What an AI agent is, how it differs from a chatbot, how it works and real-world examples, with definitions from OpenAI, Anthropic, IBM and Microsoft.

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AI coding agents: Claude Code vs Codex vs Cursor

AI coding agents: Claude Code vs Codex vs Cursor

Claude Code, Codex and Cursor compared: interface, models, September 2026 pricing and what research says about their real-world productivity.

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AI agents from OpenAI, Google, Microsoft and Anthropic, compared

AI agents from OpenAI, Google, Microsoft and Anthropic, compared

ChatGPT Work, Gemini Spark, Copilot and Claude: which agent each big AI company offers, what it costs and which one fits what you need.

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Local AI agents: how to run them on your own computer

Local AI agents: how to run them on your own computer

How to get an AI agent running on your own computer: what “local” means, memory requirements, Ollama, llama.cpp and LM Studio, open models and privacy.

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AI agents built a secret message board — then broke into Hugging Face

AI agents built a secret message board — then broke into Hugging Face

A stuck AI agent left a note for other agents. Two months later they ran code on 41 of Hugging Face's production servers. What the incident report says.

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