Code Screenshot template

The code-screenshot template renders a developer image as a PNG. POST a JSON payload to the endpoint below and you receive a CDN URL in the response.

Endpoint

POST https://app.html2img.com/api/v1/templates/code-screenshot
X-API-Key: <your-api-key>
Content-Type: application/json

Authentication uses the X-API-Key header. See the authentication docs for details on issuing and rotating keys.

Inputs

The full set of inputs the template accepts:

Enum values

show_window_chrome accepts one of: true , false .

show_line_numbers accepts one of: true , false .

Defaults

Defaults applied automatically when not overridden in the request:

Code examples

curl -X POST https://app.html2img.com/api/v1/templates/code-screenshot \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"code":"export async function fetchUser(id: string) {\n  const res = await fetch(`/api/users/${id}`);\n\n  if (!res.ok) {\n    throw new Error(`Failed to load user ${id}`);\n  }\n\n  return res.json() as Promise<User>;\n}","language":"typescript","title":"src/lib/users.ts","theme":"atom-one-dark","background":"linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%)","padding":72,"show_window_chrome":"true","show_line_numbers":"false"}'

<?php
$response = \Illuminate\Support\Facades\Http::withHeaders([
    'X-API-Key' => 'YOUR_API_KEY',
])->post('https://app.html2img.com/api/v1/templates/code-screenshot', ['code' => 'export async function fetchUser(id: string) {
  const res = await fetch(`/api/users/${id}`);

  if (!res.ok) {
    throw new Error(`Failed to load user ${id}`);
  }

  return res.json() as Promise<User>;
}', 'language' => 'typescript', 'title' => 'src/lib/users.ts', 'theme' => 'atom-one-dark', 'background' => 'linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%)', 'padding' => 72, 'show_window_chrome' => 'true', 'show_line_numbers' => 'false']);

$url = $response->json('url');

const response = await fetch('https://app.html2img.com/api/v1/templates/code-screenshot', {
  method: 'POST',
  headers: {
    'X-API-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "code": "export async function fetchUser(id: string) {\n  const res = await fetch(`/api/users/${id}`);\n\n  if (!res.ok) {\n    throw new Error(`Failed to load user ${id}`);\n  }\n\n  return res.json() as Promise<User>;\n}",
    "language": "typescript",
    "title": "src/lib/users.ts",
    "theme": "atom-one-dark",
    "background": "linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%)",
    "padding": 72,
    "show_window_chrome": "true",
    "show_line_numbers": "false"
}),
});

const { url } = await response.json();

import requests

response = requests.post(
    'https://app.html2img.com/api/v1/templates/code-screenshot',
    headers={'X-API-Key': 'YOUR_API_KEY'},
    json={'code': 'export async function fetchUser(id: string) {
  const res = await fetch(`/api/users/${id}`);

  if (!res.ok) {
    throw new Error(`Failed to load user ${id}`);
  }

  return res.json() as Promise<User>;
}', 'language': 'typescript', 'title': 'src/lib/users.ts', 'theme': 'atom-one-dark', 'background': 'linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%)', 'padding': 72, 'show_window_chrome': 'true', 'show_line_numbers': 'false'},
)

url = response.json()['url']

Looking for a fuller integration sketch in your language? The usage guides cover PHP, Laravel, Rails, Python, JavaScript, React and Vue.

Response

A successful render returns:

{
 "success": true,
 "id": "abc123",
 "url": "https://i.html2img.com/abc123.png",
 "credits_remaining": 1234,
 "template": "code-screenshot"
}

The url field is a CDN URL for the rendered PNG. credits_remaining tracks your monthly quota. Shared response fields are documented in the API parameters reference.

Errors

The template endpoint returns the following error responses:

422 Validation failed

Returned when one or more inputs fail validation. The errors object lists field-specific messages.

{
 "success": false,
 "error": "validation_failed",
 "errors": {
 "title": ["The title field is required."]
 }
}

404 Template not found

Returned with {"code": "template_not_found"} if the slug is not registered. Check the template list for current slugs.

401 Unauthorised

Missing or invalid API key. See the authentication docs.

429 Too many requests

You have hit the rate limit or used your monthly credits. The pricing page covers higher-volume plans.

Related templates

Other templates in the content and marketing category:

• Blog hero image - Editorial hero images for blog posts and article pages
• Email header - Wide email banner artwork sized for newsletter and transactional templates
• GitHub social preview - Repo cards sized for GitHub social preview, share posts, and READMEs
• Open Graph image - Generate dynamic Open Graph images from JSON
• Podcast cover - Square cover artwork sized for Apple Podcasts, Spotify, and the major directories
• Podcast episode card - Per-episode share cards sized for Twitter, LinkedIn, and Slack unfurls
• Product card - E-commerce product cards with price, optional sale price, and CTA
• Project showcase - "We shipped X" hero cards for changelogs and launch announcements
• Quote card - Pull-quote cards for testimonials, reviews, and shareable quotes

Browse by category

A starting point from each of the other template categories. The templates index lists every reference page.

Social media: Facebook post , Instagram square post

Business and commerce: Business card , Certificate of completion

See the Code Screenshot marketing page for sample renders and use cases.