Deep Work
 Architecting Digital Assets.

I'm Francesco Di Donato, a software engineer building high-performance SaaS assets and native Mac utilities.

Escaping the hourly trap. Building automated SaaS assets & native Mac utilities. Digital Nomad.

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Francesco Di Donato

Founder & Systems Architect

Selected
Projects.

Portfolio / 2024-2026

Velocaption Preview
Featured Release macOS Utility

Velocaption

Generate high-quality captions for your videos in seconds. Built natively for macOS to ensure privacy and peak performance.

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The High
Signal Dev.

Read Archive
JSON-LD Structured Data for Blogs: A Real Implementation

April 7, 2026

JSON-LD Structured Data for Blogs: A Real Implementation

Pages with structured data are 2.3x more likely to appear in AI Overviews. Here is how I added BlogPosting JSON-LD to my Astro blog with real code.

Running SQLite in the Browser with OPFS and Web Workers

March 12, 2026

Running SQLite in the Browser with OPFS and Web Workers

Discover how to set up SQLite in the browser using the Origin Private File System (OPFS) and Web Workers. Build high-performance, local-first applications with relational power and zero server costs.

LinkPreview AI: The Privacy-First, Client-Side QR Code Generator

January 20, 2026

LinkPreview AI: The Privacy-First, Client-Side QR Code Generator

Most QR code generators track you. LinkPreview AI enables zero-knowledge, client-side QR generation with no database. Here is how it works.

isemailok.com: The Silent API

January 17, 2026

isemailok.com: The Silent API

A story of a perfectly working Redis-backed micro-SaaS that died in silence. Why building isn't enough.

EasyPageGo: The Rube Goldberg Website Builder

January 16, 2026

EasyPageGo: The Rube Goldberg Website Builder

How I engineered a Docker-based website builder that solved a problem no one had. A post-mortem of over-engineering, market misreading, and the pre-ChatGPT struggle.

The Evolution of Password Security: From Basic Storage to Argon2

July 18, 2025

The Evolution of Password Security: From Basic Storage to Argon2

A level-by-level journey into password security. Discover why a simple hash isn't enough and how to defend your users from hackers and data leaks, from salt and pepper to Argon2.

Utility Belt

Free Tools.

A collection of experimental utilities and developer resources.