Markdown to HTML API
Overview
To use Markdown to HTML, you need an API key. You can get one by creating a free account and visiting your dashboard.
POST Endpoint
https://api.apiverve.com/v1/markdowntohtmlExample
How to call the Markdown to HTML API in different programming languages.
curl -X POST \
"https://api.apiverve.com/v1/markdowntohtml" \
-H "X-API-Key: your_api_key_here" \
-H "Content-Type: application/json" \
-d '{
"markdown": "# Hello World\n\nThis is a **bold** statement and this is *italic*.\n\n## Features\n\n- Easy to use\n- Fast conversion\n- Supports common markdown syntax\n\n[Link to example](https://example.com)"
}'const response = await fetch('https://api.apiverve.com/v1/markdowntohtml', {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
},
body: JSON.stringify({
"markdown": "# Hello World\n\nThis is a **bold** statement and this is *italic*.\n\n## Features\n\n- Easy to use\n- Fast conversion\n- Supports common markdown syntax\n\n[Link to example](https://example.com)"
})
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
payload = {
"markdown": "# Hello World\n\nThis is a **bold** statement and this is *italic*.\n\n## Features\n\n- Easy to use\n- Fast conversion\n- Supports common markdown syntax\n\n[Link to example](https://example.com)"
}
response = requests.post('https://api.apiverve.com/v1/markdowntohtml', headers=headers, json=payload)
data = response.json()
print(data)package main
import (
"fmt"
"io"
"net/http"
"bytes"
"encoding/json"
)
func main() {
payload := map[string]interface{}{
"markdown": "# Hello World
This is a **bold** statement and this is *italic*.
## Features
- Easy to use
- Fast conversion
- Supports common markdown syntax
[Link to example](https://example.com)"
}
jsonPayload, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/markdowntohtml", bytes.NewBuffer(jsonPayload))
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}{
"status": "ok",
"error": null,
"data": {
"html": "<h1>Hello World</h1>\n<p>This is a <strong>bold</strong> statement and this is <em>italic</em>.</p>\n<h2>Features</h2>\n<ul>\n<li>Easy to use</li>\n<li>Fast conversion</li>\n<li>Supports common markdown syntax</li>\n</ul>\n<p><a href=\"https://example.com\">Link to example</a></p>\n",
"markdownLength": 185,
"htmlLength": 272
}
}Authentication
The Markdown to HTML API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the Markdown to HTML API directly in your browser with live requests and responses.
Parameters
The following parameters are available for the Markdown to HTML API:
Convert Markdown to HTML
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
markdown | string | required | Markdown text to convert (max 100,000 characters) | - |
Response
The Markdown to HTML API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.
Other Response Formats
<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<html><h1>Hello World</h1>
<p>This is a <strong>bold</strong> statement and this is <em>italic</em>.</p>
<h2>Features</h2>
<ul>
<li>Easy to use</li>
<li>Fast conversion</li>
<li>Supports common markdown syntax</li>
</ul>
<p><a href="https://example.com">Link to example</a></p>
</html>
<markdownLength>185</markdownLength>
<htmlLength>272</htmlLength>
</data>
</response>
status: ok
error: null
data:
html: >
<h1>Hello World</h1>
<p>This is a <strong>bold</strong> statement and this is
<em>italic</em>.</p>
<h2>Features</h2>
<ul>
<li>Easy to use</li>
<li>Fast conversion</li>
<li>Supports common markdown syntax</li>
</ul>
<p><a href="https://example.com">Link to example</a></p>
markdownLength: 185
htmlLength: 272
| key | value |
|---|---|
| html | <h1>Hello World</h1> |
| <p>This is a <strong>bold</strong> statement and this is <em>italic</em>.</p> | |
| <h2>Features</h2> | |
| <ul> | |
| <li>Easy to use</li> | |
| <li>Fast conversion</li> | |
| <li>Supports common markdown syntax</li> | |
| </ul> | |
| <p><a href=https://example.com>Link to example</a></p> | |
| markdownLength | 185 |
| htmlLength | 272 |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
html | string | Converted markdown content as valid semantic HTML | |
markdownLengthPremium | number | Character count of the input markdown text | |
htmlLengthPremium | number | Character count of the generated HTML output |
Headers
Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →
GraphQL AccessALPHA
Access Markdown to HTML through GraphQL to combine it with other API calls in a single request. Query only the markdown to html data you need with precise field selection, and orchestrate complex data fetching workflows.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
POST https://api.apiverve.com/v1/graphqlquery {
markdowntohtml(
input: {
markdown: "# Hello World
This is a **bold** statement and this is *italic*.
## Features
- Easy to use
- Fast conversion
- Supports common markdown syntax
[Link to example](https://example.com)"
}
) {
html
markdownLength
htmlLength
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Markdown to HTML API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →
Rate Limiting
Markdown to HTML requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →
Error Codes
The Markdown to HTML API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →
SDKs for Markdown to HTML
Official Markdown to HTML packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →
No-Code Integrations
Markdown to HTML works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →
Frequently Asked Questions
How do I get an API key for Markdown to HTML?
How many credits does Markdown to HTML cost?
Each successful Markdown to HTML API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful markdown to html lookups.
Can I use Markdown to HTML in production?
The free plan is for testing and development only. For production use of Markdown to HTML, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use Markdown to HTML from a browser?
What happens if I exceed my Markdown to HTML credit limit?
When you reach your monthly credit limit, Markdown to HTML API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.
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