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Andrea Roversi

Dev in Italy

Joined Joined on  Personal website https://www.roversia.it
From Netlify to Cloudflare Workers: broken redirects, a stalled Firebase SDK, and zero downtime
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From Netlify to Cloudflare Workers: broken redirects, a stalled Firebase SDK, and zero downtime

#netlify #firebase #serverless
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6 min read

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Generating a Crossword in the Browser: Why Grid Backtracking Fails and What Works Instead
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Generating a Crossword in the Browser: Why Grid Backtracking Fails and What Works Instead

#javascript #algorithms #webdev #pwa
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7 min read
I launched Roversia on Product Hunt — 39+ free browser tools, zero frameworks
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I launched Roversia on Product Hunt — 39+ free browser tools, zero frameworks

#showdev #buildinpublic #javascript #sideprojects
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1 min read
Bringing an External CRM's Chats into Firestore for AI Search: Vector Search, Webhooks, and a Stubborn Bundling Error
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Bringing an External CRM's Chats into Firestore for AI Search: Vector Search, Webhooks, and a Stubborn Bundling Error

#firestore #vectorsearch #netlify #ai
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10 min read
Bringing an External CRM's Chats into Firestore for AI Search: Vector Search, Webhooks, and a Stubborn Bundling Error
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Bringing an External CRM's Chats into Firestore for AI Search: Vector Search, Webhooks, and a Stubborn Bundling Error

#firebase #ai #webdev #javascript
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8 min read
When a Public API Stops Working: CORS, an Abandoned NASA Dataset, and a Netlify Function Proxy
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When a Public API Stops Working: CORS, an Abandoned NASA Dataset, and a Netlify Function Proxy

#webdev #javascript #api
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5 min read
Removing a Photo's Background in the Browser, With No Upload: AI Licenses, ONNX Models, and a Frozen Tab
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Removing a Photo's Background in the Browser, With No Upload: AI Licenses, ONNX Models, and a Frozen Tab

#javascript #webdev #machinelearning #opensource
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6 min read
Summarizing a PDF with AI for less than a cent: PDF.js, Gemini Flash-Lite, and a Netlify Function
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Summarizing a PDF with AI for less than a cent: PDF.js, Gemini Flash-Lite, and a Netlify Function

#webdev #javascript #ai #serverless
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5 min read
PanelControl: a 65-file business app, in vanilla JavaScript with no framework

Solving focus loss during realtime renders
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PanelControl: a 65-file business app, in vanilla JavaScript with no framework

#javascript #firebase #webdev #pwa
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4 min read
Free Online Burraco, From Scratch: Rules, Wildcards, and a Three-Tier AI in Vanilla JavaScript
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Free Online Burraco, From Scratch: Rules, Wildcards, and a Three-Tier AI in Vanilla JavaScript

#javascript #gamedev #webdev #pwa
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6 min read
A Black Box Drawn Over a PDF Isn't Redaction — Here's How I Fixed It Client-Side
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A Black Box Drawn Over a PDF Isn't Redaction — Here's How I Fixed It Client-Side

#showdev #javascript #webdev #pdf
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3 min read
A plaintext Firebase password authenticated anyone who visited the site — here's how I fixed it without disconnecting anyone
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A plaintext Firebase password authenticated anyone who visited the site — here's how I fixed it without disconnecting anyone

#firebase #security #netlify #webdev
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6 min read
Building a Breakout PWA from scratch: canvas, synthesized audio, and power-ups in one HTML file
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Building a Breakout PWA from scratch: canvas, synthesized audio, and power-ups in one HTML file

#javascript #pwa #webdev
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5 min read
Spark vs Blaze: The Firebase Pricing Guide I Wish I'd Read Sooner
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Spark vs Blaze: The Firebase Pricing Guide I Wish I'd Read Sooner

#firebase #googlecloud #webdev
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5 min read
Integrating myPOS IPC into a Netlify Checkout: RSA Signatures, Error Code 25 and the Traps in the Docs
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Integrating myPOS IPC into a Netlify Checkout: RSA Signatures, Error Code 25 and the Traps in the Docs

#netlify #node #security #webdev
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7 min read
Who's Online on the Site, Without Tidio: Live Presence and Visitor History with Firebase
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Who's Online on the Site, Without Tidio: Live Presence and Visitor History with Firebase

#firebase #netlify #javascript #wordpress
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8 min read
Firebase PWA Security Audit: XSS via innerHTML, Hardcoded Credentials and a Custom Token Migration
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Firebase PWA Security Audit: XSS via innerHTML, Hardcoded Credentials and a Custom Token Migration

#javascript #firebase #security #webdev
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7 min read
Debugging a Firebase Admin Panel — Wrong DB Node, Bad Key Mapping and a Date.now() ID Bug
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Debugging a Firebase Admin Panel — Wrong DB Node, Bad Key Mapping and a Date.now() ID Bug

#javascript #firebase #webdev #debugging
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4 min read
Building a Notification Center in a Firebase PWA — Firestore vs RTDB and Three Bootstrap Fallback Levels
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Building a Notification Center in a Firebase PWA — Firestore vs RTDB and Three Bootstrap Fallback Levels

#javascript #firebase #pwa #webdev
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5 min read
Shared Calendar in a Firebase PWA — FCM Push and the Silent Session-Restore Bug
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Shared Calendar in a Firebase PWA — FCM Push and the Silent Session-Restore Bug

#javascript #firebase #pwa #webdev
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4 min read
Building an Interactive App Guide with Clickable Hotspots on Real Screenshots
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Building an Interactive App Guide with Clickable Hotspots on Real Screenshots

#javascript #firebase #ux #webdev
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5 min read
Uploading PDF, Word and Excel Files in a Firebase Chat: Cloudinary resource_type=raw and Custom Bubbles
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Uploading PDF, Word and Excel Files in a Firebase Chat: Cloudinary resource_type=raw and Custom Bubbles

#javascript #firebase #cloudinary #webdev
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4 min read
Automatic Shipping Labels with a SOAP API: the WAF Wall and the VPS Proxy
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Automatic Shipping Labels with a SOAP API: the WAF Wall and the VPS Proxy

#webdev #javascript #serverless #api
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5 min read
Electronic signature with OTP on Firebase: audit trail, PDF hash and certificate with pdf-lib
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Electronic signature with OTP on Firebase: audit trail, PDF hash and certificate with pdf-lib

#javascript #firebase #netlify #webdev
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7 min read
Dynamic file catalog with Firebase RTDB + Storage (and how I fixed a Service Worker cache bug)
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Dynamic file catalog with Firebase RTDB + Storage (and how I fixed a Service Worker cache bug)

#firebase #javascript #pwa #webdev
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2 min read
AI Assistant in a Management Panel: Gemini API + Dynamic System Prompt from Firebase
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AI Assistant in a Management Panel: Gemini API + Dynamic System Prompt from Firebase

#javascript #firebase #gemini #webdev
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6 min read
Custom e-commerce on Firebase: catalog, atomic orders and admin panel
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Custom e-commerce on Firebase: catalog, atomic orders and admin panel

#javascript #firebase #webdev #security
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6 min read
Signed token between two PWAs: HMAC-SHA256 with no backend
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Signed token between two PWAs: HMAC-SHA256 with no backend

#javascript #webdev #firebase #security
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4 min read
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