Markdown to HTML API
Markdown to HTML parses markdown syntax and converts it to clean, semantic HTML suitable for web rendering and content management.
The Markdown to HTML API provides reliable and fast access to markdown to html data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
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/markdowntohtmlCode Examples
Here are examples of 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)const https = require('https');
const url = require('url');
const options = {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
};
const postData = 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 req = https.request('https://api.apiverve.com/v1/markdowntohtml', options, (res) => {
let data = '';
res.on('data', (chunk) => data += chunk);
res.on('end', () => console.log(JSON.parse(data)));
});
req.write(postData);
req.end();<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/markdowntohtml');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'X-API-Key: your_api_key_here',
'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode({
'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)'
}));
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response, true);
print_r($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))
}require 'net/http'
require 'json'
uri = URI('https://api.apiverve.com/v1/markdowntohtml')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
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)"
}
request = Net::HTTP::Post.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'
request.body = payload.to_json
response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main(string[] args)
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");
var jsonContent = @"{
""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)""
}";
var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");
var response = await client.PostAsync("https://api.apiverve.com/v1/markdowntohtml", content);
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}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:
Example Responses
{
"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
}
}<?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
Required and optional headers for Markdown to HTML API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
X-API-Key | required | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
Accept | optional | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
User-Agent | optional | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
X-Request-ID | optional | req_123456789 | Custom request identifier for tracking and debugging requests |
Cache-Control | optional | no-cache | Control caching behavior for the request and response |
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 supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Markdown to HTML directly from browser-based applications without proxy servers.
| CORS Header | Value | Description |
|---|---|---|
Access-Control-Allow-Origin | * | Accepts requests from any origin |
Access-Control-Allow-Methods | * | Accepts any HTTP method |
Access-Control-Allow-Headers | * | Accepts any request headers |
Browser Usage: You can call Markdown to HTML directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
Markdown to HTML API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Markdown to HTML users.
| Plan | Rate Limit | Description |
|---|---|---|
| Free | 5 requests/min | Hard rate limit enforced - exceeding will return 429 errors |
| Starter | No Limit | Production ready - standard traffic priority |
| Pro | No Limit | Production ready - preferred traffic priority |
| Mega | No Limit | Production ready - highest traffic priority |
Learn more about rate limiting →
Rate Limit Headers
When rate limits apply, each Markdown to HTML response includes headers to help you track your usage:
| Header | Description |
|---|---|
X-RateLimit-Limit | Maximum number of requests allowed per time window |
X-RateLimit-Remaining | Number of requests remaining in the current window |
X-RateLimit-Reset | Unix timestamp when the rate limit window resets |
Handling Rate Limits
Free Plan: When you exceed your rate limit, Markdown to HTML returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.
Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.
Best Practices for Markdown to HTML:
- Monitor the rate limit headers to track your Markdown to HTML usage (Free plan only)
- Cache markdown to html responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle Markdown to HTML performance
Note: Markdown to HTML rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Markdown to HTML on Free tier.
Error Codes
The Markdown to HTML API uses standard HTTP status codes to indicate success or failure:
| Code | Message | Description | Solution |
|---|---|---|---|
200 | OK | Request successful, data returned | No action needed - request was successful |
400 | Bad Request | Invalid request parameters or malformed request | Check required parameters and ensure values match expected formats |
401 | Unauthorized | Missing or invalid API key | Include x-api-key header with valid API key from dashboard |
403 | Forbidden | API key lacks permission or insufficient credits | Check credit balance in dashboard or upgrade plan |
429 | Too Many Requests | Rate limit exceeded (Free: 5 req/min) | Implement request throttling or upgrade to paid plan |
500 | Internal Server Error | Server error occurred | Retry request after a few seconds, contact support if persists |
503 | Service Unavailable | API temporarily unavailable | Wait and retry, check status page for maintenance updates |
Learn more about error handling →
Need help? Contact support with your X-Request-ID for assistance.
Integrate Markdown to HTML with SDKs
Get started quickly with official Markdown to HTML SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.
Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.
Integrate Markdown to HTML with No-Code API Tools
Connect the Markdown to HTML API to your favorite automation platform without writing code. Build workflows that leverage markdown to html data across thousands of apps.





All platforms use your same API key to access Markdown to HTML. Visit our integrations hub for step-by-step 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.



