Blog

Engineering Guides

Deep dives on HTML-to-image rendering, screenshot APIs, OG image automation, and the engineering behind RendShot.

Screenshot APIs Compared (2026)
·11 min read

Screenshot APIs Compared (2026)

An honest comparison of 5 screenshot APIs — ScreenshotOne, Urlbox, APIFlash, HCTI, and RendShot. We tested rendering quality, latency, pricing, SDK support, and unique features so you can pick the right one.

screenshot-apicomparisonapi
Dynamic OG Images: Automate Your Social Previews
·12 min read

Dynamic OG Images: Automate Your Social Previews

Learn how to generate Open Graph images automatically with three implementation paths — @vercel/og, Puppeteer, and API-based rendering. Framework integration for Next.js, Astro, and CI/CD pipelines.

og-imagesocial-mediaautomation
HTML to JPEG: When to Choose Lossy Compression
·8 min read

HTML to JPEG: When to Choose Lossy Compression

A decision framework for choosing JPEG over PNG when generating images from HTML. Covers DCT compression basics, 5 scenarios where JPEG wins, quality tuning, and file size trade-offs.

html-to-jpegtutorialimage-formats
HTML to PNG: 5 Methods Compared (2026 Guide)
·5 min read

HTML to PNG: 5 Methods Compared (2026 Guide)

Compare 5 ways to convert HTML to PNG — from browser DevTools to headless browsers to APIs. Code examples, benchmarks, and a decision framework for developers.

html-to-pngtutorialcomparison
Playwright Screenshot Tutorial (2026)
·9 min read

Playwright Screenshot Tutorial (2026)

Learn how to take screenshots with Playwright — page.screenshot(), locator.screenshot(), multi-browser rendering, auto-wait, and visual regression testing. Plus when to switch to an API for production workloads.

playwrightscreenshotheadless-browser
Puppeteer Screenshot: Complete Guide (2026)
·9 min read

Puppeteer Screenshot: Complete Guide (2026)

Learn how to take screenshots with Puppeteer — page.screenshot(), element capture, wait strategies, viewport emulation, and 5 production pitfalls that push teams toward a dedicated API.

puppeteerscreenshotheadless-browser
Get Started

Ready to automate your image generation?

View Plans