Guides / Comparison

RasterKit as an HTML/CSS-to-Image alternative

HTML/CSS to Image (HCTI) pioneered the "POST your HTML, get an image" workflow and remains a solid single-purpose tool. RasterKit implements the same workflow (template_html or stored templates with variables) and adds the two outputs HCTI doesn't cover: URL screenshots and PDFs.

If your roadmap stops at images, either works. If invoices or page captures are anywhere on it, one bundled engine saves a second integration later.

Side by side

	htmlcsstoimage.com	RasterKit
Products included	Single product	Screenshots + PDFs + OG images, one key, one bill
HTML → image	Yes	Yes (template_html or stored template_id)
Stored templates with variables	Yes	Yes, with sample variables and a dashboard editor
URL screenshots	Limited	First-class, with device presets and full-page capture
HTML → PDF	No	First-class
Free tier	50 images/mo class	100 renders/mo

When htmlcsstoimage.com is the better choice

• Image-only needs with an existing integration
• Their template gallery fits your use case exactly

When RasterKit is the better choice

• You want images and PDFs and screenshots on one bill
• You want signed URLs so og:image can point straight at the API
• You want cached renders to be free

Try it in two minutes

curl -X POST https://rasterkit.com/v1/screenshot \
  -H "x-api-key: $RASTERKIT_API_KEY" \
  -H "content-type: application/json" \
  -d '{"url": "https://example.com"}' \
  -o screenshot.png

Get your free API key →

Comparison reflects public information as of June 2026. Spot an inaccuracy? Tell us and we'll fix it.