How to Receive PDF Generation Webhooks in Go
Build a Go webhook endpoint that verifies signatures, deduplicates retries, and queues PDF work before acknowledging delivery.
How to Use a Proxy with Screaming Frog SEO Spider
Configure a proxy in Screaming Frog SEO Spider, fix certificate and crawl errors, understand routing limits, and choose the right workflow.
How to Scrape Gumtree Data: Classified Listings, Prices, and Locations
Gumtree prohibits automated collection without express written permission. Here’s how to plan an authorized listings dataset and handle prices, locations, and personal data responsibly.
Extracting Favicons for Website Metadata
Find favicon links in HTML and web app manifests, resolve their URLs correctly, and return candidates with the metadata and fetch status developers need.
Puppeteer Tutorial: How to Interact with Forms
Learn to fill inputs, select options, handle checkboxes, submit forms, wait for results, and troubleshoot Puppeteer automation.
Free Full-Page Website Screenshots: Browser Tools and Developer Options
Capture a long webpage as one image for free. Use built-in Firefox and Edge tools, Firefox DevTools, or a carefully chosen extension.
How to Scrape Posts from Facebook Groups
Learn what Facebook permits, how to research group posts safely, and how to process authorized exports without brittle scraping.
Web Scraping Playground: Test Requests and Extractors
Learn how to fetch a page, test CSS and XPath extractors, and diagnose missing or changing data with Scrapy, browser tools, and repeatable checks.
How to Scrape Kayak Flight Prices in 2026
KAYAK prohibits automated scraping without written permission. Here are the authorized ways to track fares and build a flight-price project.
How to Fix Open Graph Images Not Updating in WordPress
Facebook still shows an old WordPress image? Trace the live og:image, fix the winning setting, clear the right caches, and scrape the exact URL again.
How to Impersonate Chrome or Firefox with Curl
Change curl’s User-Agent for a browser-like HTTP request, or use curl-impersonate when you need browser-style headers and TLS behavior.
How to Extract Text from Images
Learn how to extract text from photos, screenshots, scans, and image-only PDFs with desktop tools, OCR APIs, automation, and reliable workflows.
How to Generate a PDF and Return Its URL in Ruby
Generate a PDF in Ruby, store it safely, and return a usable URL with Prawn, PDFKit, Wicked PDF, or Rails Active Storage.
Sitemap URL Extractor: List Every Page From Robots.txt
Extract every sitemap URL from robots.txt, recursively crawl sitemap indexes, and export a complete, auditable URL inventory.
Fix Missing og:image with Metadata Fallback Rules
Fix missing og:image tags with a reliable fallback order, server-rendered metadata, runnable examples, and a checklist for validating link previews.
How to Save a Generated PDF Online and Get a Shareable URL
Upload your generated PDF, set the right access permissions, and test the share link. Includes Google Drive and Dropbox workflows, plus an API pattern for automation.
How to Find Sibling HTML Nodes with PHP
Learn how to find next and previous sibling elements in PHP with DOMDocument, safe node filtering, XPath, PHP 8.4 notes, and fixes for whitespace surprises.
How to Generate Images or PDFs from HTML
Learn when to use canvas, html2canvas, or headless Chromium to export HTML as accurate images and PDFs, with runnable code and troubleshooting.