# Itziar ZG | Sovereign & Sustainable Web Development

Available for new projects

# When you need to use technology to generate social impact responsibly, talk with me.

Front-end developer specialized in lightweight, accessible, and sovereign technology. Based in Ibiza.

Explorar Laboratorio

## Manifesto for Human & Sovereign Technology

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### Purpose

Democratize and humanize technology, putting it at the service of people and the planet, and not the other way around. I seek to create tools that empower communities rather than concentrate power.

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### Mission

Develop efficient, accessible, and digital-rights-respecting solutions, demonstrating that another technology is possible through local commitment and global impact.

### Guiding principles

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#### Sustainability (Green Software)

Optimize resource consumption, minimizing data transfer and the carbon footprint of the web applications I develop.

verified Green Software Practitioner open_in_new
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#### Free & Open Source Software

Support and contribute to open source as a digital public good that fosters technological sovereignty and shared learning.

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#### Common Good

Prioritize projects and tools that generate a positive, measurable social impact oriented toward solving real society needs.

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#### Accessibility (a11y)

Design inclusive web interfaces so everyone can access information without physical, cognitive, or technological barriers.

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#### Privacy

Respect personal data sovereignty, using ethical and cookieless analytics, protecting users from corporate tracking.

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#### Responsible AI

Use AI models ethically and transparently, prioritizing local execution and ensuring they support human agency.

## My Laboratory

A space for technical experimentation, real tools, and sovereign digital infrastructure.

### What I use and why

Technological sovereignty begins at the foundations. I have chosen to manage my own infrastructure to ensure control over my data, project privacy, and reduce dependency on cloud giants.

bolt Green Commitment

My infrastructure is hosted at Hetzner's data center in Helsinki, powered by 100% carbon-free energy from wind and hydro sources.

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#### Hetzner Helsinki

Dedicated servers and VPS powered by green energy in Finland.

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#### Coolify

Self-hosted, open-source alternative to Vercel/Heroku.

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#### Forgejo

Lightweight self-hosted Git service for sovereign code control.

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#### n8n

Self-hosted workflow automation free from SaaS lock-in.

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#### Umami

Ethical, privacy-respecting, cookieless web analytics.

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#### Green Software Measurement

Empirical comparison of CPU and network consumption between SSR (Astro/Next.js) architectures and optimized static HTML pages.

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#### Local AI on Raspberry Pi

Running small models like Llama 3.2 1B and Phi-3 with Ollama locally for classification and tagging tasks with zero API cost and guaranteed privacy.

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#### Screen Reader Stress Test

Manual audit of complex interfaces using NVDA and VoiceOver screen readers to validate dynamic interactive flows and live ARIA states.

### Real tools, not demos

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#### Navidrome Server

Personal self-hosted music instance on Hetzner to regain sovereignty over my audio files and avoid corporate streaming algorithms.

Operational Docker • Hetzner
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#### n8n + Ollama Pipeline

Autonomous local pipeline that captures voice notes, transcribes them, and processes them using Ollama with open-source AI models without sending data to OpenAI.

Operational n8n • Ollama • Whisper
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#### Open Source Contribution

Active collaboration and bug fixing in open-source tools and frameworks used daily.

Ongoing Forgejo • GitHub
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#### Balearic Data Visualization

Interactive dashboard and ecological visualization of water and resource consumption in the Balearic archipelago, built with lightweight web technologies.

In Development HTML5 • JS • D3.js
chevron_right Previous Work (Commercial & AI Projects)

#### AI Knowledge Pipeline

Intelligent multimedia processing system. Receives audio files and PDFs, transcribes, and structures them using commercial AI APIs for semantic querying.

#### ChefGPT

Conversational Telegram bot connected to Supabase and RAG that suggests recipes based on available ingredients in real time.

Reflexiones, aprendizajes técnicos y notas sobre soberanía digital sin pretensiones de sentar cátedra.

July 20, 2026 verified Green Software

#### Green Software Practitioner — 5 Key Takeaways

##### Why did I get this certification?

Because I want to build technology that takes its environmental and social impact into account.

##### Five ideas I'm taking away:

1. The best energy is the energy not consumed.

   Optimizing isn't just about making websites faster. It also means using fewer resources.

2. Efficiency starts with design.

   Choosing a simple architecture is usually better than optimizing later.

3. Measure before improving.

   We cannot reduce what we do not measure.

4. Software also has a carbon footprint.

   Every data transfer, process, or storage has a cost.

5. Green Software isn't just about consuming less.

   It also means designing products that help reduce the environmental impact of people and organizations.

##### What's next?

I am currently reading Technological Sovereignty because I believe sustainability doesn't depend solely on energy consumption, but also on who controls the infrastructure and software we use.

These are learning notes, not definitive guides. If you spot something that can be improved, I'd love to hear from you.
July 19, 2026

#### Imperfection as an Ally: Why I Avoid Purism When Measuring Web Carbon

Sometimes obsessing over maximum technical optimization blocks publishing useful tools. In this post I explain my infrastructure decisions and the pragmatic limits I accept...

Read full article in Footprint section arrow_right_alt
These are learning notes, not definitive guides. If you spot something that can be improved, I'd love to hear from you.
June 2, 2026

#### Migrating Code: From GitHub to Forgejo on My Own VPS

First steps configuring Forgejo via Docker. Detail of RAM memory consumption (spoiler: uses less than 100MB on medium repositories) and ease of use...

Coming soon
These are learning notes, not definitive guides. If you spot something that can be improved, I'd love to hear from you.

## AI Knowledge Pipeline

### Description

Intelligent multimedia content processing and ingestion system. Receives audio files, PDFs, videos, and text. Uses AI models to transcribe, summarize, and extract key information, storing everything structured in Supabase for subsequent retrieval.

### Key Features

- Multiple content type ingestion
- Automatic AI transcription
- Intelligent summarization and keyword extraction
- Vector storage for semantic search
- Automated workflow with n8n

### Tech Stack

n8n Supabase (PostgreSQL + pgvector) OpenAI API Whisper (transcription)

### Result

Fully automated pipeline that reduces content processing time by 85% and enables intelligent information reuse through semantic search.

## ChefGPT

### Description

Intelligent conversational agent on Telegram acting as a personal culinary assistant. Queries your Supabase inventory, accesses a specialized recipe RAG to avoid hallucinations, and suggests customized dishes based on available ingredients.

### Key Features

- Bi-directional integration with Supabase
- Automatic database inventory querying
- RAG (Retrieval-Augmented Generation) with verified recipes
- Hallucination prevention via prompt fine-tuning
- Customized recipe generation without hallucinations
- Automatic inventory updating
- Natural and contextual conversation

### Tech Stack

Telegram Bot API Supabase (PostgreSQL) RAG (Retrieval) OpenAI GPT n8n

### Result

Robust culinary assistant that eliminates the "what to cook" decision without generating non-existent recipes. The RAG ensures all suggestions originate from a corpus of verified recipes, providing reliability and personalization without AI hallucinations.