Daniel Igel - DEV Community

Daniel Igel

Aug 8

Auto-generate Open Graph preview images for any URL with the Website Screenshot API

2 min read

Daniel Igel

Aug 7

Show prices in the user's local currency: live ECB exchange rates in your Next.js app

1 min read

Daniel Igel

Aug 6

Build a customer feedback sentiment dashboard in Node.js — no ML setup, just a REST API call

2 min read

Daniel Igel

Aug 5

Cut signup spam: 3-layer email validation with RFC syntax, MX check and disposable detection

1 min read

Daniel Igel

Aug 4

3 ways to use IP geolocation in your web app: personalization, server-side detection, and log enrichment

2 min read

Daniel Igel

Aug 3

How to add EU VAT number validation to your Stripe checkout in under 30 minutes

1 min read

Daniel Igel

Aug 2

5 real-world IBAN validation use cases in SaaS apps — from checkout forms to invoice generation

2 min read

Daniel Igel

Aug 1

Measure reading ease and extract keywords from any text — Flesch-Kincaid and more via REST API

2 min read

Daniel Igel

Jul 31

Convert HTML to clean Markdown via REST API — perfect for content migration and web scraping

1 min read

Daniel Igel

Jul 30

Generate and validate passwords via REST API — CSPRNG, entropy scoring, and Diceware passphrases

2 min read

Daniel Igel

Jul 29

Generate EAN-13, Code 128 and QR barcodes via REST API — PNG and SVG output, no library needed

2 min read

Daniel Igel

Jul 28

Check if an IP is blacklisted across 7 DNSBL sources — free REST API, no setup required

2 min read

Daniel Igel

Jul 27

Add JSON-LD structured data in 10 minutes to get cited by AI search

2 min read

Daniel Igel

Jul 26

Detect the language of any text in 187 languages — no ML model, no billing

1 min read

Daniel Igel

Jul 25

Mortgage, loan and compound interest calculations via REST API — no spreadsheet needed

2 min read

Daniel Igel

Jul 24

EU VAT number validation in 3 lines of code: REST API backed by official VIES

2 min read

Daniel Igel

Jul 23

Validate 100 IBANs at once: batch payment validation without a banking API

1 min read

Daniel Igel

Jul 22

Check domain availability, WHOIS and suggestions via REST API

1 min read

Daniel Igel

Jul 21

DNS lookup via REST API â€” resolve A, AAAA, MX, TXT, NS and CNAME records in your app

1 min read

Daniel Igel

Jul 20

Live exchange rates from the ECB via REST API â€” no key, no sign-up required

2 min read

Daniel Igel

Jul 19

IP Geolocation in your app without a local database: free REST API with MaxMind GeoLite2

#api #backend #networking #webdev

2 min read

Daniel Igel

Jul 12

Turn any RSS or Atom feed into clean JSON with a single HTTP request

#showdev #api #javascript #webdev

2 min read

Daniel Igel

Jul 11

URL to screenshot in one GET â€” desktop, mobile, or custom viewport

2 min read

Daniel Igel

Jul 10

5 text analysis tasks in one POST â€” no LLM key needed

#ai #api #llm #nlp

1 min read

Daniel Igel

Jul 8

Syntax + MX + disposable detection: complete email validation in one call

#showdev #api #backend #webdev

1 min read

Daniel Igel

Jul 6

Scrape any URL with one POST — Cloudflare bypass included

2 min read

Daniel Igel

Jul 5

Why your robots.txt is blocking AI crawlers (and how to fix it)

#ai #seo #tutorial #webdev

1 min read

Daniel Igel

Jul 2

10-point AI citation readiness checklist for developers

#ai #developer #seo #webdev

2 min read

Daniel Igel

Jul 1

Build link previews without parsing HTML: OG metadata in one API call

#showdev #api #seo #webdev

1 min read

Daniel Igel

Jun 25

Add llms.txt to your site in 5 minutes and get cited by ChatGPT, Perplexity & Co.

#ai #llm #tutorial #webdev

4 min read

Daniel Igel

Jun 24

How to audit your site for AI search readiness (step-by-step with CiteReady)

#ai #tooling #tutorial #webdev

4 min read

Daniel Igel

Jun 23

What is GEO and why your site needs it in 2026

#ai #llm #marketing #webdev

1 min read

Daniel Igel

Jun 18

Validate EU VAT numbers against VIES (with company lookup) in one GET

#showdev #api #backend #webdev

1 min read

Daniel Igel

Jun 17

Validate & parse IBANs (ISO 13616, 80+ countries) without a paid banking API

#showdev #api #backend #webdev

1 min read

Daniel Igel

Jun 16

Block abusive IPs before they hit your app: one call against 7 DNSBLs

#showdev #api #networking #security

1 min read

Daniel Igel

Jun 15

Is your site visible to AI search? Check it with one API call

#showdev #ai #api #webdev

1 min read

Daniel Igel

Jun 14

DNS lookups (A/MX/TXT/reverse) as a single JSON endpoint — no resolver wrangling

#showdev #api #networking #tooling

1 min read

Daniel Igel

Jun 13

Scraping Cloudflare-protected pages without running your own headless browser

#webscraping #node #api #webdev

1 min read

Daniel Igel

Jun 13

Cut signup spam: syntax + MX + disposable email validation in one call

#api #saas #node #webdev

1

1 min read

Daniel Igel

Jun 13

Add geo-personalization with one IP lookup (IPv4/IPv6, batch)

#api #webdev #javascript #node

1 min read

Daniel Igel

Jun 13

Drop-in sentiment, summary & NER without managing an LLM key

#api #ai #node #webdev

1 min read

Daniel Igel

Jun 13

Generate OG / social-preview images on the fly (screenshots-as-a-service)

#showdev #webdev #api #node

1 min read

Daniel Igel

Jun 13

Free-tier currency conversion straight from the ECB feed

#api #webdev #javascript #fintech

1 min read

Writing Debut