Rendex vs HTML/CSS to Image
HTML/CSS to Image (htmlcsstoimage.com) and Rendex both turn raw HTML and CSS into an image from a single API call. htmlcsstoimage is a focused, mature image API with very deep volume tiers; Rendex covers the same HTML-to-image job with a larger free tier, more output types (PDF, Markdown, hosted OG links), and EU VAT invoices plus a DPA. Here is how they compare in 2026.
Feature Comparison
A detailed look at what each API supports today. Both render raw HTML, so the rows that differ most are output breadth, async/batch, and AI-agent and automation integration.
Core Features
Output Formats
Advanced Capture
Enterprise & Scale
AI Agent Integration
Developer Experience
Pricing Comparison
What you actually pay at each tier (entry plans shown).
Rendex is 51% lower on list price per render ($6.90 vs $14 per 1K) with 2x the free tier — htmlcsstoimage goes deeper on enterprise volume tiers.
When to Choose Each
Both render raw HTML well — the right pick depends on output breadth, volume, and compliance needs.
The Verdict
HTML/CSS to Imageis a mature, focused HTML-to-image API with genuinely deep enterprise volume tiers — up to a million images a month with a 99.95% SLA — and a hosted-image model that saves you managing storage. If raw throughput at the top end is your main constraint, it is a strong choice.
Rendexcovers the same core HTML-to-image job with a 2x larger free tier, a lower per-render list price, and broader output from one key — image, PDF, Markdown, and hosted OG links — plus an n8n community node alongside Make, Zapier, and an MCP server. For an EU company, Rendex also publishes a VAT invoice and a DPA, which htmlcsstoimage does not state. For most report, invoice, and social-card workloads below the enterprise ceiling, Rendex is the more complete fit.
Ready to try Rendex?
100 free calls/month. No credit card required. Hard cap on every plan — no surprise bills.
Frequently Asked Questions
Is Rendex a good htmlcsstoimage alternative?
Yes. Both turn raw HTML and CSS into an image from a single API call. Rendex matches that core job and adds a larger free tier (100 vs 50/month), PDF, Markdown, and hosted OG output, an n8n community node, and EU VAT invoices plus a DPA.
What is htmlcsstoimage's free tier?
50 images per month, no credit card. Rendex includes 100 renders per month on its free tier — about 2x the monthly headroom before you pay.
Is Rendex cheaper than htmlcsstoimage?
On list price per render, yes: Rendex is $6.90 per 1,000 renders versus $14 per 1,000 images on htmlcsstoimage's entry plan — 51% lower. htmlcsstoimage offers deeper enterprise volume tiers (up to 1,000,000 images/month with a 99.95% SLA), so at very high volume compare the specific tier you need.
Do both support PDF output?
Yes. Both render HTML to PDF as well as PNG, JPEG, and WebP. Rendex additionally renders Markdown and exposes hosted OG-image links and URL-to-Markdown extraction from the same API key.
Which is better for an EU company?
Rendex publishes a GDPR-ready posture, a DPA on request, and VAT invoices for EU B2B (reverse-charge included). htmlcsstoimage does not publish a GDPR/DPA/VAT or EU data-residency statement, so EU buyers would need to contact its support for processing terms.
Related Use Cases
See how Rendex solves specific rendering problems.
Convert HTML to Images with a Single API Call
Pass raw HTML — get back a pixel-perfect PNG, JPEG, or WebP. No hosted page required. Generate social cards, invoices, OG images, and email previews without running a browser.
Render HTML Charts, Tables & Reports to PNG from Your Backend
Generate report deliverables server-side: send your HTML chart or financial table, get back a crisp 2× PNG, and drop it straight into the PDF or report your app already produces. One HTTP call from any language — no Chromium to install, no browser fleet to keep alive.
Generate Dynamic OG Images at Scale
Every page deserves a unique social preview. Pass an HTML template with dynamic data — get back a perfectly sized OG image. No Puppeteer, no Vercel OG, no infrastructure.
Generate Multi-Page PDF Invoices from One HTML Template
Store one invoice template with a line-item loop, pass each invoice's data, and let long invoices flow across multiple A4 pages — Rendex returns a print-ready PDF with modern CSS, page-break control, and configurable page size and margins. No wkhtmltopdf, no Puppeteer, one call per invoice.
Explore More Comparisons
See how Rendex compares across the screenshot API landscape.