Vibejam 2026
levelsio competition
Sunset City
A browser-based voxel city you can parkour through at sunset. My entry for the 2026 Vibejam.
Play in browser
Indie Dev & Content Creator
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.
A browser-based voxel city you can parkour through at sunset. My entry for the 2026 Vibejam.
May 9, 2026
How a Fourier transform exposes an AI watermark's frequencies, and how a phase shift drops SynthID detection by 91% at 43 dB PSNR.
May 9, 2026
How Velocaption ships seven distinct recording cues with zero audio files, using OscillatorNode, GainNode, and a 432 Hz tuning palette. Working interactive widgets at every step.
May 5, 2026
Index 35 posts in under 100ms. Prerender one JSON file per locale at build time, fetch lazily on Cmd+K, query with FlexSearch in the browser. Zero server cost.
May 5, 2026
Astro deep-link highlight in ~75 lines: click a search result, land on the exact word with a yellow flash. Why URL Text Fragments lost the fight with ClientRouter.
May 4, 2026
Wire four push buttons to a single analog pin using a binary-weighted resistor ladder. Each button (and combination) produces a unique voltage the microcontroller can map back to the right key. Includes the schematic, the math, and the Arduino sketch.
May 4, 2026
The default Claude Code statusline shows the model and the cwd. I wanted seven fields and a terminal bell on every render. Here's the bash script, the settings.json wiring, and the JSON payload Claude Code pipes into the script.
Available for architectural consulting, custom SaaS development, and technical partnerships.
Curated tech findings and dev explorations. Zero fluff.
Clean your CSV files instantly. Remove blank rows and optimize data for processing using Go and WebAssembly.
Interactive simulation of cellular automata. Explore patterns and watch life evolve.
Trim and export as MP4 with filmstrip timeline.
Reduce file size with 5 quality presets.
Convert between MP4, WebM, and MKV.
Design pro-grade Instagram and LinkedIn carousels in your browser. 16 templates, 4 packs, 12 themes, brand kit, PDF + PNG export. 100% free, zero sign-up.
Create a custom WhatsApp 'Click to Chat' wa.me link and QR code instantly. Pre-fill your message, copy the HTML snippet, and connect with customers for free.
Remove the background from any image instantly for free. Powered by AI, runs entirely in your browser — no uploads, no accounts, no watermarks.
Generate a secure, offline medical ID for your helmet, wallet, or keychain. Vital info for first responders, zero data stored on servers.
Protect your bags without broadcasting your home address. Generate a secure 'If Found' QR code that works offline in airports anywhere.
Turn any photo into a sequence of secure, scannable QR codes. Share images across air-gapped devices without WiFi, Bluetooth, or the cloud.
Generate a professional, privacy-first QR business card. No monthly fees, no tracking. Scans directly to phone contacts.
