HTML Entities Encoder/Decoder API
HTML Entities Encoder/Decoder is a tool for encoding and decoding HTML entities. It converts special characters to HTML entities and vice versa to prevent XSS attacks and display special characters properly.
The HTML Entities Encoder/Decoder API provides reliable and fast access to html entities encoder/decoder data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use HTML Entities Encoder/Decoder, 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/htmlentitiesCode Examples
Here are examples of how to call the HTML Entities Encoder/Decoder API in different programming languages:
curl -X POST \
"https://api.apiverve.com/v1/htmlentities" \
-H "X-API-Key: your_api_key_here" \
-H "Content-Type: application/json" \
-d '{
"html": "<div class=\"test\">Hello & World</div>",
"action": "encode"
}'const response = await fetch('https://api.apiverve.com/v1/htmlentities', {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
},
body: JSON.stringify({
"html": "<div class=\"test\">Hello & World</div>",
"action": "encode"
})
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
payload = {
"html": "<div class=\"test\">Hello & World</div>",
"action": "encode"
}
response = requests.post('https://api.apiverve.com/v1/htmlentities', 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({
"html": "<div class=\"test\">Hello & World</div>",
"action": "encode"
});
const req = https.request('https://api.apiverve.com/v1/htmlentities', 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/htmlentities');
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({
'html': '<div class=\'test\'>Hello & World</div>',
'action': 'encode'
}));
$response = curl_exec($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{}{
"html": "<div class="test">Hello & World</div>",
"action": "encode"
}
jsonPayload, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/htmlentities", 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/htmlentities')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
payload = {
"html": "<div class=\"test\">Hello & World</div>",
"action": "encode"
}
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 = @"{
""html"": ""<div class=\""test\"">Hello & World</div>"",
""action"": ""encode""
}";
var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");
var response = await client.PostAsync("https://api.apiverve.com/v1/htmlentities", content);
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}Authentication
The HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder API directly in your browser with live requests and responses.
Parameters
The HTML Entities Encoder/Decoder API supports multiple query options. Use one of the following:
Option 1: Encode HTML Entities
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
html | string | required | The HTML content to encode | - | |
action | string | optional | The action to perform Supported values: encodedecode |
Option 2: Decode HTML Entities
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
html | string | required | The HTML entities to decode | - | |
action | string | optional | The action to perform Supported values: encodedecode |
Response
The HTML Entities Encoder/Decoder API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"status": "ok",
"error": null,
"data": {
"action": "encode",
"original": "<div class=\"test\">Hello & World</div>",
"encoded": "<div class="test">Hello & World</div>",
"entities_replaced": [
"<",
"\"",
">",
"&",
"/"
],
"count": 8
}
}<?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>
<action>encode</action>
<original><div class="test">Hello & World</div></original>
<encoded>&lt;div class=&quot;test&quot;&gt;Hello &amp; World&lt;&#x2F;div&gt;</encoded>
<entities_replaced>
<item><</item>
<item>"</item>
<item>></item>
<item>&</item>
<item>/</item>
</entities_replaced>
<count>8</count>
</data>
</response>
status: ok
error: null
data:
action: encode
original: <div class="test">Hello & World</div>
encoded: '<div class="test">Hello & World</div>'
entities_replaced:
- <
- '"'
- '>'
- '&'
- /
count: 8
| key | value |
|---|---|
| action | encode |
| original | <div class=test>Hello & World</div> |
| encoded | <div class="test">Hello & World</div> |
| entities_replaced | [<,\,>,&,/] |
| count | 8 |
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 |
|---|---|---|---|
action | string | The action performed on the HTML content | |
original | string | The original HTML entities before decoding | |
encoded | string | The HTML content with entities decoded | |
entities_replaced | array | Array of entity patterns that were replaced | |
count | number | Total number of entity replacements made |
Headers
Required and optional headers for HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder through GraphQL to combine it with other API calls in a single request. Query only the html entities encoder/decoder 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 {
htmlentities(
input: {
html: "<div class="test">Hello & World</div>"
action: "encode"
}
) {
action
original
encoded
entities_replaced
count
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The HTML Entities Encoder/Decoder API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
HTML Entities Encoder/Decoder API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder 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, HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder:
- Monitor the rate limit headers to track your HTML Entities Encoder/Decoder usage (Free plan only)
- Cache html entities encoder/decoder responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle HTML Entities Encoder/Decoder performance
Note: HTML Entities Encoder/Decoder rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using HTML Entities Encoder/Decoder on Free tier.
Error Codes
The HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder with SDKs
Get started quickly with official HTML Entities Encoder/Decoder 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 HTML Entities Encoder/Decoder with No-Code API Tools
Connect the HTML Entities Encoder/Decoder API to your favorite automation platform without writing code. Build workflows that leverage html entities encoder/decoder data across thousands of apps.





All platforms use your same API key to access HTML Entities Encoder/Decoder. Visit our integrations hub for step-by-step setup guides.
Frequently Asked Questions
How do I get an API key for HTML Entities Encoder/Decoder?
How many credits does HTML Entities Encoder/Decoder cost?
Each successful HTML Entities Encoder/Decoder 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 html entities encoder/decoder lookups.
Can I use HTML Entities Encoder/Decoder in production?
The free plan is for testing and development only. For production use of HTML Entities Encoder/Decoder, 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 HTML Entities Encoder/Decoder from a browser?
What happens if I exceed my HTML Entities Encoder/Decoder credit limit?
When you reach your monthly credit limit, HTML Entities Encoder/Decoder 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.



