HTML/CSS API templates

Generate education images from student data and HTML/CSS templates

Build certificates, report cards, schedules, and learning materials once, then render each version with named student and course values.

Start free Read the template API docs
  • HTML and CSS layouts
  • Reusable assets and settings
  • Versioned template IDs
Complex HTML and CSS stored with reusable assets, render settings, and a published template version.
Versioned HTML/CSS template
<main class="report-card">
  <h1>{{title}}</h1>
  <img src="{{chart}}" />
</main>
POST/v1/image/{template_id}
{
  "template_values": {
    "title": "Quarterly results",
    "chart": "https://..."
  }
}
Published version
v12Ready to render
Reusable assets
Interlogo.svgchart.png
Render settings
1200 × 630 · PNG · dark mode

Build your template

Two ways to build, one way to render

Both template types render by ID with named values.

Use cases

Generate classroom materials from student and course data

Explore image templates

Certificates and awards

Insert names, programs, dates, and achievements into one certificate template.

Report cards and summaries

Create report cards, progress snapshots, and learning plans from student records.

Schedules and handouts

Generate class-specific materials while keeping layout and school branding consistent.

Learning aids

Create flash cards, diagrams, and visual prompts from reusable lesson templates.

HTML/CSS template API

Create the design with HTML and CSS, then render it by ID

Save the layout, assets, and image settings in a versioned template. Each image request sends the template ID and named values.

  1. Build the layout

    Create the template from complex HTML and CSS through the API.

  2. Centralize assets and settings

    Keep fonts, images, dimensions, browser options, and output settings with the design.

  3. Publish and render versions

    Release template changes deliberately while integrations continue rendering by stable ID.

Versioned templates

Keep HTML and CSS out of image requests

Send only the template ID and named values. The saved template provides the layout, assets, settings, and selected version.

  • HTML and CSS

    Build detailed layouts without including the full document in every render request.

  • Saved assets and settings

    Keep fonts, images, viewport details, and output options with the template.

  • Published versions

    Publish an update under the same ID and choose which version to render.

Template API workflow
Template API workflow
Layout
HTML + CSS
Shared
Assets · fonts · settings
Release
Versioned template
Render
Stable ID + named values

HTML/CSS API templates

Build the layout once and render it by ID

Keep complex HTML, CSS, assets, fonts, browser settings, and output options in a versioned template while requests send only the values that change.

Start free Read the template API docs

API template workflows

Use HTML/CSS templates across your product

See how different teams use stable template IDs, named values, and versioned layouts.

AI & Agents

Back agent image tools with versioned HTML/CSS layouts, named values, and controlled rendering settings.

View workflow

Developers

Use stable IDs and versioned HTML/CSS layouts while keeping assets and render settings out of application requests.

View workflow

Marketing

Automate campaign variants with versioned HTML/CSS templates, named values, and reusable brand assets.

View workflow

Sales

Render personalized sales collateral from CRM data with versioned HTML/CSS templates and stable IDs.

View workflow

Finance

Build versioned financial report templates with reusable charts, disclosures, assets, and render settings.

View workflow