Puppeteer crashes, Chrome leaks memory, and HTML-to-image rendering is unpredictable. RenderStack's dedicated rendering engine generates deterministic, pixel-perfect images without a browser.
Recreate your HTML template in RenderStack's visual editor. Or use AI Template Creation to upload a screenshot and auto-generate the template.
Mark elements as dynamic layers and match them to the same data you currently pass to your HTML template. The API accepts the same JSON structure.
Replace your Puppeteer rendering call with a RenderStack API call. Same input data, better output, zero browser infrastructure.
Same input always produces the same output. No CSS rendering variance, no font substitution, no timing-dependent layout shifts.
Millisecond render times without browser startup overhead. No waiting for DOM parsing, CSS layout, or JavaScript execution.
Complex text reflow and container sizing handled natively. No CSS flexbox debugging or media query workarounds.
Upload a screenshot of your existing HTML template. AI analyzes the layout and generates an editable RenderStack template automatically.
No Docker containers, no Chrome binary management, no memory monitoring, no restart scripts. Just API calls.
// BEFORE: Puppeteer (30+ lines, browser management)
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.setViewport({ width: 1200, height: 630 });
await page.setContent(htmlTemplate);
await page.waitForTimeout(1000); // Hope fonts loaded...
const screenshot = await page.screenshot({ type: 'png' });
await browser.close(); // Don't forget or memory leaks!
// AFTER: RenderStack (5 lines, zero infrastructure)
const res = await fetch('https://api.renderstack.io/v1/render/my-template', {
method: 'POST',
headers: { 'Authorization': 'Bearer rs_master_xxx', 'Content-Type': 'application/json' },
body: JSON.stringify({ overrides: { title: { text: 'Hello World' } } })
});
const image = await res.arrayBuffer();Migrate from Puppeteer to RenderStack in hours. Faster renders, deterministic output, zero DevOps.
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Start generating dynamic images and PDFs with RenderStack today.