API Guides & Tutorials

Tutorial

Convert HTML to PDF with a REST API

Convert HTML to PDF with a simple REST API call. No Puppeteer or headless browser setup. Free tier included. cURL, JavaScript, PHP, and Python examples.

Example

HTML to PDF API: cURL, JavaScript, PHP & Python Examples

Ready-to-use code examples for converting HTML to PDF via API. Copy-paste snippets for cURL, JavaScript fetch, PHP, and Python requests.

Use-case

Generate PDF Invoices with a Simple API Call

Generate professional PDF invoices from HTML templates using a REST API. No wkhtmltopdf or Puppeteer needed. Free tier with 75 requests/day.

Tutorial

DNS Lookup API: Query A, MX, TXT Records Programmatically

Query DNS records programmatically with a free REST API. Resolve A, AAAA, MX, TXT, CNAME, and NS records. JSON response, no dig required.

Use-case

Check MX Records via API for Email Deliverability

Verify MX records for any domain using a free REST API. Check email deliverability, validate mail server configuration, and troubleshoot DNS issues.

Tutorial

DNS Record Types Explained: A, AAAA, MX, TXT, CNAME, NS

Learn what A, AAAA, MX, TXT, CNAME, and NS DNS records do. Practical examples with a free API to query any record type in real time.

Tutorial

Capture Website Screenshots with a REST API

Capture website screenshots programmatically with a free REST API. Full-page or viewport screenshots in PNG or JPEG. No Puppeteer setup needed.

Use-case

Build Link Previews with a Screenshot API

Generate link preview images and OG thumbnails using a screenshot API. Capture any URL as an image for social sharing, dashboards, and monitoring.

Tutorial

Full-Page Screenshots: Capture Entire Web Pages via API

Capture full-page screenshots of long, scrollable web pages via API. Get the entire page rendered as a single PNG image. Free tier included.

Tutorial

Text Analysis API: Word Count, Reading Time & Keyword Frequency

Analyze text with a free REST API. Get word count, character count, reading time, and keyword frequency. JSON response with cURL, JS, PHP & Python examples.

Use-case

Build a Word Counter with the Text Analysis API

Build a reliable word counter using a REST API. Count words accurately, enforce content length limits, and validate form submissions. Free tier included.

Use-case

Estimate Reading Time with the Text Analysis API

Add reading time estimates to blog posts and articles with a free REST API. Get words-per-minute calculations, speaking time, and word counts in one call.

Tutorial

User Agent Parser API: Detect Browser, OS & Device Type

Parse User-Agent strings with a free REST API. Detect browser, OS, device type, and bots. JSON response with cURL, JavaScript, PHP & Python examples.

Use-case

Build a Bot Detection System with the User Agent API

Detect bots, crawlers, and scrapers by parsing User-Agent strings via API. Filter Googlebot, block scrapers, and keep analytics clean. Free tier included.

Use-case

Browser Analytics with the User Agent Parser API

Build a browser analytics dashboard by parsing UA strings from server logs. Break down traffic by browser, OS, and device type. No client-side JS needed.