·6 min read
How to Convert URLs to PDF in Node.js
url to pdf node.js guide: use the Rendex JS SDK to capture any URL as a PDF with A4 format, custom margins, and print backgrounds. Includes a batch example.
nodejspdftutorial
Rendex Blog
Tutorials, comparisons, and guides for rendering HTML, URLs, and Markdown into images and PDFs.
·7 min read
SPA Screenshot: waitFor Strategies for React, Vue, Svelte
spa screenshot waitfor guide: waitForSelector and waitUntil patterns for React, Vue 3, and Svelte apps, with working code examples for each framework
spareactvuetutorial
·6 min read
How to Make Screenshot APIs Fast: 5 Optimizations
5 screenshot api performance optimizations: WebP format, viewport sizing, blockResourceTypes, wait strategies, and batch calls. Code and numbers for each.
performancetutorial
·6 min read
How AI Agents Can Screenshot and Analyze Web Pages
An AI agent web screenshot loop pairs Rendex captures with Claude's vision API so it can judge a live page and decide what to check next
aiagentstutorial
·9 min read
7 Ways to Generate OG Images (APIs, Libraries, Services)
og image generator roundup: 7 options from @vercel/og and Satori to hosted APIs, with code examples and honest trade-offs for each approach
og-imagesroundupapi
·6 min read
Bulk Screenshot and PDF Generation with a Batch API
Batch screenshot api guide: submit up to 500 URLs in one request, poll for results, and receive a webhook when the batch settles.
batchautomationtutorial
·7 min read
Async Screenshot API With Webhook Delivery
Async screenshot API guide: submit a non-blocking capture with a webhookUrl, get an HMAC-signed callback when it settles, and verify it in Node or Python.
asyncwebhookstutorial
·5 min read
Add a Cursor MCP Screenshot Tool in Minutes
Set up a Cursor MCP screenshot tool so the editor's AI can capture any URL as PNG, JPEG, WebP, or PDF. Full config for npx and the hosted server.
cursormcptutorial
·6 min read
Render HTML and Screenshots in Zapier (No-Code)
Zapier screenshot and PDF automation with the native Rendex app: capture URLs, render HTML templates, and generate PDFs across 7,000+ apps with no code.
zapierno-codeautomationtutorial
·6 min read
Rendex Watch: Visual Website-Change Monitoring
Website change monitoring inside Rendex: watch any URL and get a real-Chrome before/after visual diff with an overlay, plus email or webhook alerts.
watchmonitoringupdate_driventutorial
·6 min read
Rendex Is Now a Verified n8n Community Node
The Rendex n8n node is verified and live on n8n Cloud. Search the canvas to capture screenshots, generate PDFs, and extract web content in any workflow.
n8nautomationtutorialupdate_driven
·6 min read
Generate Invoices from an HTML Template and JSON
Generate PDF from template: write one HTML template with Mustache placeholders, pass a JSON data object per document, and get rendered invoices back
templatingpdfautomationtutorial
·7 min read
Automate Invoice & Document Generation in n8n with Rendex
Use the n8n invoice automation node from Rendex to render an HTML invoice template to PNG or PDF on a trigger, then email or store it. No code.
n8nautomationpdftutorial
·10 min read
Render a Chart to an Image on the Server (Node + Python, 2026)
Turn a chart into a server-side PNG — Chart.js/node-canvas, matplotlib, pandas, Plotly/kaleido, ECharts SSR, or an HTML-render API. Working code and the honest trade-offs.
chartstutorialhtml-to-image
·9 min read
Render an HTML Table to PNG in Python (5 Ways, 2026)
Convert an HTML table or report to a PNG from Python — Rendex API, html2image, Playwright, imgkit/wkhtmltoimage, and Selenium. Working code plus when to use each.
pythontutorialhtml-to-image
·9 min read
Best HTML-to-PDF Tools in 2026 (APIs + Libraries)
Compare the best HTML-to-PDF tools in 2026: Rendex API, DocRaptor, PDFShift, wkhtmltopdf, and Playwright. Pricing, CSS support, and when to use each
pdfroundupapi
·6 min read
How to Render HTML to Images in Make.com (No-Code)
Render HTML to image in Make.com using the generic HTTP module and the Rendex API. POST your markup, get a PNG or PDF back, use it downstream. No code.
makeautomationhtml-to-imagetutorial
·6 min read
Debugging Headless Chrome Memory Leaks
headless chrome memory leak debugging: four causes, three fixes, and a decision framework for when to drop self-hosted Chrome entirely
debuggingperformancechrome
·6 min read
How to Convert Markdown to PDF with an API (2026)
Convert markdown to pdf api: pass raw Markdown, get back a styled PDF or PNG in one HTTP request. curl, Python SDK, and JS SDK examples included
markdownpdftutorial
·7 min read
Why Self-Hosted Puppeteer Costs More Than a Screenshot API
Puppeteer vs screenshot api: real cost breakdown of AWS EC2, Chrome memory, and maintenance time, plus honest advice on when DIY actually wins
comparisonperformancecost
·6 min read
Building a PDF Report Endpoint with FastAPI
fastapi pdf generation tutorial: build a FastAPI endpoint that renders HTML to PDF using the Rendex API, with async support and no Chromium dependency
fastapipythonpdftutorial
·7 min read
Generating PDFs in Rails with an API (No wkhtmltopdf)
Use the rails pdf generation api to replace wkhtmltopdf in Rails: Faraday service object, controller integration, and async job examples
railsrubypdftutorial
·6 min read
Capture Website Screenshots in Django with the Rendex API
Use the django screenshot api with the Rendex Python SDK. Learn how to capture screenshots in a Django view, management command, and batch workflow
djangopythontutorial
·6 min read
Generating Social Cards in Next.js Without Vercel Lock-in
Generate Next.js OG images with an API and skip the @vercel/og dependency. Works on Netlify, Railway, or any host with 10 lines of code.
nextjstutorialog-images
·7 min read
Website Monitoring with Automated Screenshots
Set up website monitoring screenshots with a Cloudflare Workers cron: capture key pages hourly, diff visually, and alert on changes.
monitoringtutorialautomation
·7 min read
Automating Invoice Generation with HTML-to-PDF
Build an html to pdf invoice api pipeline: Stripe webhook converts payments to PDF invoices delivered to customers automatically.
pdftutorialautomation
·7 min read
How to Build a Visual Regression Testing Pipeline
Visual regression testing API workflow: capture production and PR preview screenshots, diff with pixelmatch, block bad merges in GitHub Actions.
testingtutorialci-cd
·6 min read
How to Generate Dynamic OG Images with an API
Generate dynamic OG images with an API for Next.js, Astro, and Nuxt. No Vercel lock-in, works anywhere, and takes under 10 lines of code to integrate.
og-imagestutorialapi
·7 min read
Best Screenshot API in 2026: An Honest Comparison
Compare the best screenshot API options in 2026. Rendex, ScreenshotOne, and Urlbox rated on pricing, developer experience, and MCP support.
comparisonscreenshotsapi
·7 min read
Rendering API vs Screenshot API: What's the Difference?
A rendering API converts web content to PNG, PDF, or structured output. See how rendering APIs differ from screenshot APIs and when to use each.
renderingcomparisonapi
·7 min read
MCP Tools for Web Rendering: A Developer Guide
Configure Rendex as an MCP rendering tool for AI agents. Claude Desktop and Cursor setup with the rendex_screenshot tool and working code examples
mcptutorialai
·8 min read
How to Generate PDFs from URLs in Python (2026)
Learn 4 ways to convert URLs to PDFs with Python — Rendex API, Playwright, Selenium, and wkhtmltopdf. Complete code examples with async batch support.
pythontutorialpdf
·7 min read
How to Convert HTML to an Image with an API (2026)
3 ways to convert HTML to images. Working code in Python, JavaScript, and cURL for social cards, OG images, and invoices
html-to-imagetutorialrendering
·8 min read
How to Capture Website Screenshots with Python in 2026
Learn 4 ways to capture website screenshots with Python — Rendex API, Playwright, Selenium, and Pyppeteer. Complete code examples with async support.
pythontutorialscreenshots
Coming soon
New posts on screenshot APIs, MCP integrations, and developer automation ship weekly.
JavaScript SDK GuideMCP Server SetupScreenshot API BenchmarksOG Image Automation