html2canvas walks the DOM and re-draws what it understands onto a canvas. That design means perpetual gaps: CSS it doesn't support (filters, blend modes, some flexbox/grid edge cases), web fonts that render subtly wrong, cross-origin images that taint the canvas and vanish, and iframes that never appear. The GitHub issues are a museum of 'my screenshot doesn't match my page'.
Screenshotty captures what Chrome actually painted — every property the browser supports, because it is the browser. It also works server-side, so captures don't depend on each visitor's device, browser quirks, or patience.
Compare output on your page — free toolBefore: html2canvas (approximation)
After: capture the real page
Everything You Need, Built In
Pixel-accurate by construction
Real Chrome paint output — filters, shadows, blend modes, custom fonts, canvas, and SVG all render exactly as on screen.
No CORS casualties
Cross-origin images and iframes appear in the capture instead of tainting a canvas or rendering blank.
Server-side & consistent
One rendering environment, identical output every time — not whatever browser and zoom level each user happens to have.
Beyond the viewport
Full-page capture, element capture, PDFs, dark mode, and 7 output formats — things a client-side canvas can't reach.
Frequently Asked Questions
Why does my html2canvas screenshot look different from the page?
Because html2canvas re-implements rendering rather than reading the browser's actual paint output. Unsupported CSS, web-font metrics, and cross-origin restrictions all cause drift. A real-browser capture has none of these gaps by design.
I need to capture user-specific state in the browser — can an API do that?
Often yes: pass the URL with the user's cookies/headers, or POST the rendered HTML itself to the API. For truly client-only state, capture the data, not the pixels, and re-render it server-side with the html parameter.
What does it cost compared to self-hosting?
Screenshotty starts free (100 screenshots/month, no credit card) and paid plans start at $9/month for 2,500 screenshots with $0.004 pay-as-you-go overage. Self-hosting costs server capacity sized for Chrome's memory spikes plus the engineering time to keep browsers patched, warm, and stable — typically far more than the subscription for any non-trivial volume.
How hard is it to migrate?
Usually under an hour. Replace your capture function with one HTTP request — the viewport, full-page, wait-condition, and selector options you rely on are all API parameters. Your language guide (Python, Node.js, PHP, Java, Ruby, Go, C#) has copy-paste examples.