Comparison Guide
Best HTML to Image API in 2026
Converting HTML to PNG, JPEG, or WebP via API is a solved problem — but the tools differ wildly in input flexibility, pricing, and developer experience. Here's an honest breakdown of the top options.
| Feature | Renderfy | hcti.io | Bannerbear | Placid | Puppeteer |
|---|---|---|---|---|---|
| Input types | HTML, Tailwind, MD, code, charts, diagrams, math | HTML + CSS | Template-only | Template-only | Any (DIY) |
| Output formats | PNG, JPEG, WebP, PDF | PNG, JPEG, WebP, PDF | PNG, JPEG, PDF, MP4, GIF | PNG, JPEG, WebP, PDF, video | PNG, JPEG, WebP, PDF |
| API response | Binary (inline) | Hosted URL | Hosted URL | Hosted URL | N/A (local) |
| Tailwind CSS | Built-in | Bring your own CDN | No | No | DIY |
| Saved templates | Yes | No | Yes (GUI) | Yes (GUI) | DIY |
| Batch rendering | Up to 20/call | No | Yes | Yes | DIY |
| Custom fonts | Google Fonts by name | CSS @font-face | Upload | Upload | Any (local) |
| Starting price | $9/mo | ~$14/mo | $49/mo | $19/mo | Free + infra |
| Free tier | 100 credits | 50 img/mo | 30 trial credits | Trial only | Free |
Renderfy
Best all-in-one rendering API
A single REST endpoint that converts HTML, Tailwind CSS, Markdown, code, charts, diagrams, and LaTeX math to PNG, JPEG, WebP, or PDF. Returns binary in the response — no hosted URL to fetch separately. Includes saved server-side templates, batch rendering (up to 20 per call), idempotent retries, and custom brand fonts via Google Fonts family names.
Pros
- ✓ 7 input types beyond raw HTML (Tailwind, Markdown, code, charts, diagrams, math)
- ✓ Binary response — no second fetch to download the image
- ✓ Built-in Tailwind CSS support, no CDN link needed
- ✓ Saved templates with {{ placeholder }} substitution
- ✓ Batch rendering and idempotent retries (Idempotency-Key header)
- ✓ Custom brand fonts by family name (Google Fonts)
- ✓ EU data residency (server in Germany, DB in Ireland)
- ✓ $9/mo starting price for 5,000 credits
Cons
- ✗ Newer service — smaller community than Puppeteer
- ✗ No self-hosted option (managed API only)
Pricing: 100 free credits on signup (no card). Paid plans from $9/mo (5,000 credits) to $79/mo (100,000 credits).
HTML/CSS to Image (hcti.io)
Simple and reliable for HTML-only rendering
Focused API that converts HTML + CSS to PNG, JPEG, WebP, or PDF. Returns a hosted image URL rather than binary. No built-in Tailwind support, chart generation, or template system.
Pros
- ✓ Simple, focused API — does one thing well
- ✓ Supports PNG, JPEG, WebP, and PDF output
- ✓ 50 free images per month (recurring)
Cons
- ✗ Returns a hosted URL, not binary — requires a second fetch
- ✗ No Tailwind, Markdown, chart, diagram, or code input
- ✗ No saved templates, batch rendering, or idempotency
- ✗ Higher starting price (~$14/mo for 1,000 images)
Pricing: 50 free images/month. Paid plans from ~$14/mo (1,000 images).
Placid
Best for no-code teams needing broad integrations
Template-based image and video generation with a GUI editor. Broad integration ecosystem including Zapier, Make, Airtable, ChatGPT, Ghost, n8n, Webflow, and WordPress. Austria-based (GDPR compliant).
Pros
- ✓ Widest integration ecosystem (Zapier, Make, Airtable, ChatGPT, Ghost, n8n, Webflow, WordPress)
- ✓ Video output (Full HD) alongside images and PDF
- ✓ GDPR compliant, Austria-based
- ✓ Mobile SDK available
Cons
- ✗ Templates are GUI-only — no version control or code-first workflow
- ✗ Starts at $19/mo for only 500 credits
- ✗ No raw HTML, Tailwind, or Markdown input — template-only
Pricing: Free trial (no card). Paid from $19/mo (500 credits) to $249/mo (100,000 credits).
Puppeteer (self-hosted)
Best if you want full control and have the infra team
Open-source headless Chrome automation library. Full CSS support via Chromium. Free to use — you manage the infrastructure yourself. Supports PNG, JPEG, WebP, and PDF.
Pros
- ✓ Free and open-source
- ✓ Full CSS/JS support (real Chromium)
- ✓ Complete control over rendering pipeline
- ✓ Actively maintained (v25+)
Cons
- ✗ You manage Chrome instances, memory, concurrency, and scaling
- ✗ No built-in template system, batch API, or idempotency
- ✗ Cold starts on serverless (Lambda/Cloud Functions) are slow
- ✗ No managed API — every feature is DIY
Pricing: Free (open-source). You pay for compute infrastructure.
Frequently asked questions
What is an HTML to image API?
An HTML to image API takes HTML (and usually CSS) as input and returns a rendered image — typically PNG, JPEG, or WebP. Instead of screenshotting a browser manually, you send a POST request with your markup and get pixel-perfect output back.
Which HTML to image API is cheapest?
Puppeteer is free but requires you to manage infrastructure. Among managed APIs, Renderfy starts at $9/mo for 5,000 credits. HTML/CSS to Image starts at ~$14/mo for 1,000 images. Bannerbear starts at $49/mo.
Can I convert Tailwind CSS to an image?
Yes — Renderfy has built-in Tailwind CSS support. Send Tailwind utility classes in your HTML and they render correctly without linking a CDN. Other APIs require you to include the Tailwind CDN script manually or don't support Tailwind at all.
Do I need a headless browser to convert HTML to an image?
Not if you use a managed API. Services like Renderfy, HTML/CSS to Image, and Bannerbear handle the browser rendering server-side. If you self-host with Puppeteer or Playwright, you manage the headless Chrome instance yourself.
Try it now — 100 free credits, no card needed
HTML, Tailwind, Markdown, code, charts, diagrams, math — one endpoint for all of them.
Get your API key