FFmpeg Video Editing Essentials: Trimming, Merging, Subtitling, and More
Learn reliable FFmpeg workflows for trimming, joining clips, adding subtitles, preserving streams, troubleshooting errors, and choosing between copying and re-encoding.
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Guides for capturing the web
How to take clean screenshots, turn HTML into images and PDFs, run headless browsers, and give AI agents eyes. Written by the team that builds ScreenshotNeo.
How to Generate Link Preview Images
Create a share image, publish it at a public URL, and point your page’s Open Graph metadata to it. This guide covers static images, dynamic generation, validation, and common failures.
SQL Window Functions: Example Queries and Cheat Sheet
Learn SQL window functions with practical query patterns, a compact cheat sheet, and clear guidance on partitions, ranking, and ROWS versus RANGE.
How to Take Website Screenshots Automatically in n8n
Build an n8n workflow that captures web pages on a schedule or event, saves the image, and handles common failures.
How to Scrape Ecommerce Search Results
Learn how to find ecommerce search results, check site rules, handle filters and JavaScript, and extract product data responsibly with Python.
Puppeteer vs. Cypress for Screenshots in 2026
Compare Puppeteer and Cypress screenshot workflows, options, and failure capture. Choose the right fit and see when a screenshot API can simplify capture.
How to Reverse XPath Expressions
Learn when to use XPath reverse axes and when to reverse a sequence, with clear examples, runnable code, and fixes for common predicate and compatibility errors.
How to Find Subdomains of a Domain
Combine certificate logs, search engines, DNS enumeration and validation to build a reliable, authorized subdomain inventory.
CSS Selectors: A Cheatsheet for Web Scraping and HTML Parsing
Learn CSS selector syntax for scraping and parsing HTML, with runnable browser and Python examples, troubleshooting tips, and guidance on static versus rendered pages.
How to Take Screenshots with Splash
Use Splash Lua scripts to capture viewport, full-page, cropped, and element screenshots, with runnable examples and troubleshooting.
Generating Video, PDFs, and Images with the ChatGPT MCP Server
Learn how MCP connects ChatGPT to tools, how to analyze PDFs and generate images with OpenAI APIs, and why video generation is unavailable now.
Open Graph Image Parameters Explained
Learn the correct Open Graph image size, metadata, formats, debugging steps, and fixes for previews that crop or fail to appear.
How to Screenshot a Single Element with Splash
Capture one DOM element as a PNG with Splash Lua, or crop its bounding box when you need padding and precise control.
How to Parse HTML with Regular Expressions
Regex can extract a known pattern from controlled HTML, but it cannot reliably build an HTML document tree. Here’s when to use it, runnable examples, and when to switch to a parser.
The Best Cheap Proxy Services in 2026
Compare low-cost proxy types, published prices, trials, and tradeoffs so you can choose a plan that fits your traffic and target.
Playwright Timeout: How to Change and Fix It
Identify the Playwright timeout scope, change the right setting, and fix flaky waits with runnable TypeScript examples and troubleshooting.
How to Fix Website Screenshot Downloads on iPhone and iPad
Find screenshots in Photos, full-page PDFs in Files, and Safari downloads in their configured folder on iPhone or iPad.
Regression Testing: Everything You Need to Know
Learn when to run regression tests, how to choose risk-based coverage, and how to automate reliable checks in CI/CD.