24 articles

📰 Dev.to · Ozor

Articles from Dev.to · Ozor · 24 articles · Updated every 3 hours · View all reads

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How to Detect Any Website's Tech Stack in JavaScript (No Browser Required)
Dev.to · Ozor 1mo ago
How to Detect Any Website's Tech Stack in JavaScript (No Browser Required)
Ever wondered what framework a website uses? Or which CDN, analytics tool, or CMS powers a...
How to Geo-Block Countries in Express.js (Free IP Geolocation API)
Dev.to · Ozor 1mo ago
How to Geo-Block Countries in Express.js (Free IP Geolocation API)
Build country-based access control middleware for Express.js using a free IP geolocation API. Block, allow, or redirect users by country with zero dependencies.
How to Build a Broken Link Checker in JavaScript (Free API)
Dev.to · Ozor 1mo ago
How to Build a Broken Link Checker in JavaScript (Free API)
Dead links destroy user experience and tank your SEO. Google penalizes pages with broken outbound...
How to Verify Email Addresses in JavaScript (Without Sending Emails)
Dev.to · Ozor 1mo ago
How to Verify Email Addresses in JavaScript (Without Sending Emails)
You know the drill: a user signs up with asdfgh@notreal.xyz, and your onboarding flow sends a welcome...
How to Detect Bot Traffic by IP Address (JavaScript)
Dev.to · Ozor 1mo ago
How to Detect Bot Traffic by IP Address (JavaScript)
If you run a website or API, bot traffic is a fact of life. Scrapers, credential stuffers,...
How to Build a Domain Intelligence Tool in JavaScript (DNS + Geolocation + Screenshots)
Dev.to · Ozor 1mo ago
How to Build a Domain Intelligence Tool in JavaScript (DNS + Geolocation + Screenshots)
Build a domain recon tool that pulls DNS records, geolocates servers, and captures screenshots — all with free APIs and under 120 lines of code.
How to Detect VPN and Proxy Users by IP Address (JavaScript)
Dev.to · Ozor 1mo ago
How to Detect VPN and Proxy Users by IP Address (JavaScript)
Build a VPN/proxy detection system using IP geolocation, ASN data, and heuristics. Free API, working code, no dependencies.
How to Build a Webhook Delivery Monitor with JavaScript (Free APIs)
Dev.to · Ozor 1mo ago
How to Build a Webhook Delivery Monitor with JavaScript (Free APIs)
Webhooks are the backbone of modern integrations — Stripe sends payment events, GitHub sends push...
How to Build a Phishing URL Scanner in JavaScript (Free APIs)
Dev.to · Ozor 1mo ago
How to Build a Phishing URL Scanner in JavaScript (Free APIs)
Phishing attacks cost businesses $4.76 billion per year. But you can build a basic URL scanner in...
How to Build a Crypto Price Alert Bot in Node.js (No Dependencies)
Dev.to · Ozor 1mo ago
How to Build a Crypto Price Alert Bot in Node.js (No Dependencies)
If you trade or hold crypto, you've probably wanted a simple way to get notified when prices move....
How to Personalize Your Website by User Location (Free API + JavaScript)
Dev.to · Ozor 1mo ago
How to Personalize Your Website by User Location (Free API + JavaScript)
Detect visitor country, city, and timezone with a free IP geolocation API. Personalize content, currency, and language automatically.
How to Build Website Uptime Monitoring in 10 Minutes (Free, No Dependencies)
Dev.to · Ozor 1mo ago
How to Build Website Uptime Monitoring in 10 Minutes (Free, No Dependencies)
You don't need Datadog, PagerDuty, or a $29/month plan to monitor your websites. With 40 lines of...
How to Build a Website Change Detector in 30 Lines of Code
Dev.to · Ozor 1mo ago
How to Build a Website Change Detector in 30 Lines of Code
Monitor any website for changes using a free web scraping API. Get notified when content changes — no Puppeteer, no browser dependencies.
How to Build a DNS Lookup Tool with JavaScript (Free API, No dig Required)
Dev.to · Ozor 1mo ago
How to Build a DNS Lookup Tool with JavaScript (Free API, No dig Required)
Need to resolve a domain name from your app? You could shell out to dig or nslookup, but there's a...
Free Public IP API — No Key, No Signup, No Rate Limits (ipify Alternative)
Dev.to · Ozor 1mo ago
Free Public IP API — No Key, No Signup, No Rate Limits (ipify Alternative)
A free API to get your public IP address and geolocation data. No API key required. Works from curl, JavaScript, Python, Go. Compare with ipify, ip-api, and ipi
45 Node.js Microservices, 1 Server: Why I Chose PM2 Over Kubernetes
Dev.to · Ozor 1mo ago
45 Node.js Microservices, 1 Server: Why I Chose PM2 Over Kubernetes
Running 45 Fastify and Express microservices on a single VPS with PM2 and Nginx. Here's the architecture, the tradeoffs, and what I learned.
Run Code in Any Language with One API Call (No Server Required)
Dev.to · Ozor 1mo ago
Run Code in Any Language with One API Call (No Server Required)
Execute Python, JavaScript, Bash, and TypeScript code via a free REST API. Build code playgrounds, AI agent tools, and automated testing — no Docker, no VMs, no
Automate Website Screenshots in Your CI/CD Pipeline (No Puppeteer)
Dev.to · Ozor 1mo ago
Automate Website Screenshots in Your CI/CD Pipeline (No Puppeteer)
A GitHub Action that takes website screenshots on every push, PR, or deployment. No browser setup, no Puppeteer, no Playwright — one API call.
One SDK, 40 APIs: Stop Juggling API Keys
Dev.to · Ozor 1mo ago
One SDK, 40 APIs: Stop Juggling API Keys
A single JavaScript/Python SDK that wraps 40+ services — geolocation, crypto, DNS, screenshots, scraping, and more. Zero dependencies, free tier.
Take Website Screenshots with Code: One API Call, No Puppeteer Setup
Dev.to · Ozor 1mo ago
Take Website Screenshots with Code: One API Call, No Puppeteer Setup
Taking screenshots of websites programmatically is one of those tasks that sounds simple until you...