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Validate, format, and beautify your JSON data with real-time error detection and syntax highlighting.
Validate XML documents, check syntax, and format XML with comprehensive error reporting.
Encode and decode URLs, handle special characters, and ensure proper URL formatting.
Get image dimensions, file size, and format information from any image URL or file.
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JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data between systems, especially in web applications. It is easy for humans to read and write, and easy for machines to parse and generate.
{
"name": "Alice",
"age": 30,
"skills": ["JavaScript", "Python", "SQL"]
}
In short, JSON is a widely used format that simplifies data sharing across systems and platforms.
JSON string values must follow strict rules. Some special characters are not allowed directly and must be escaped to ensure valid syntax.
Character | Description | Escape Sequence |
---|---|---|
" | Double Quote | \" |
\ | Backslash | \\ |
↵ | Newline | \n |
→ | Tab | \t |
← | Backspace | \b |
␇ | Form Feed | \f |
↩ | Carriage Return | \r |
✓ | Unicode Example | \u2713 |
"key"
null
Always ensure these characters are properly escaped when including them in JSON strings to avoid parsing errors.
Recursive JSON refers to a data structure where an object contains a reference to another object of the same type. This is commonly used for representing hierarchies like folders, categories, menus, etc.
Below is an example of a recursive JSON structure representing categories with subcategories:
{
"id": 1,
"name": "Electronics",
"subcategories": [
{
"id": 2,
"name": "Computers",
"subcategories": [
{
"id": 3,
"name": "Laptops",
"subcategories": []
},
{
"id": 4,
"name": "Desktops",
"subcategories": []
}
]
},
{
"id": 5,
"name": "Cameras",
"subcategories": []
}
]
}
Note: This recursive pattern continues as each subcategory
can contain more subcategories
. Be cautious of deep nesting for performance and readability reasons.
XML (eXtensible Markup Language) is a markup language used to store and transport data. It is both human-readable and machine-readable, making it a popular choice for structured document exchange between systems.
XML Validation is the process of checking whether an XML document follows a defined structure or schema (like DTD or XSD). It ensures data integrity, correctness, and interoperability across systems that consume XML.
The following characters are not allowed directly in XML content and must be escaped:
<
must be written as <
>
must be written as >
&
must be written as &
"
must be written as "
(inside attributes)'
must be written as '
(inside attributes)XML syntax uses opening and closing tags, attributes, and a hierarchical tree structure. Every tag must be properly nested and closed.
<?xml version="1.0" encoding="UTF-8"?>
<book>
<title>XML Basics</title>
<author>John Doe</author>
<year>2025</year>
</book>
Use XML when you need strict validation and detailed data structures, such as in enterprise systems or standardized APIs.
DTD (Document Type Definition) defines the structure and legal elements and attributes of an XML document. It helps validate whether the XML content follows the expected format. DTDs can be internal (within the XML file) or external (linked from outside).
XSL (eXtensible Stylesheet Language) is used to transform and format XML data. The most common part, XSLT (XSL Transformations), allows developers to convert XML into HTML, plain text, or another XML format using template rules.
XQuery is a powerful query language designed to extract and manipulate data stored in XML format. It works similarly to SQL but for XML. XQuery is commonly used in databases, APIs, and document-based data processing.
Use Angular's HttpClient
to fetch XML and parse it:
// In your Angular service or component
this.http.get('assets/sample.xml', { responseType: 'text' })
.subscribe(data => {
const parser = new DOMParser();
const xml = parser.parseFromString(data, 'text/xml');
const title = xml.getElementsByTagName('title')[0].textContent;
console.log(title);
});
PHP offers simple ways to parse XML using simplexml_load_string
:
<?php
$xml = '<note>
<to>User</to>
<from>Admin</from>
</note>';
$data = simplexml_load_string($xml);
echo $data->to; // Output: User
?>
JavaScript can parse XML using the DOMParser
API:
const xmlString = `
<book>
<title>XML Basics</title>
</book>`;
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlString, "text/xml");
const title = xmlDoc.getElementsByTagName("title")[0].textContent;
console.log(title); // Output: XML Basics
In React, you can use the same DOMParser
logic, typically inside useEffect
:
import { useEffect } from "react";
export default function XmlReader() {
useEffect(() => {
const xml = `
<user>
<name>Alice</name>
</user>`;
const doc = new DOMParser().parseFromString(xml, "text/xml");
const name = doc.getElementsByTagName("name")[0].textContent;
console.log(name);
}, []);
return <div>Check console for output</div>;
}
URL (Uniform Resource Locator) is the address used to access resources on the internet. It specifies the location of a web page, image, video, API, or any other file available online.
https
):443
/products
)?id=10
)#section2
)Secure URLs use HTTPS and encrypt the connection. Unsecure URLs use HTTP and do not provide encryption.
https://example.com
(Secure)http://example.com
(Unsecure)https
to protect user data and boost SEO.Some characters are not allowed in URLs and must be encoded:
space
→ %20
<
, >
, {
, }
|
, \\
, ^
, ~
, [ ]
, `
"
, #
, %
(in some contexts)URL encoding replaces unsafe characters with a %
followed by two hexadecimal digits. This ensures proper transmission through URLs.
encodeURIComponent("name=John Doe")
// Output: name%3DJohn%20Doe
decodeURIComponent("name%3DJohn%20Doe")
// Output: name=John Doe
encodeURIComponent()
for values and encodeURI()
for entire URLs.Images are graphical content embedded in web pages to enhance visual appeal, convey information, or support user interaction. Common types include photos, icons, charts, and illustrations.
Images are included in websites to attract attention, represent branding, and improve user understanding of content. They can be static (e.g., JPEGs, PNGs) or dynamic (e.g., SVGs, animations).
Format | Best For | Supports Transparency | Compression |
---|---|---|---|
JPEG | Photographs, rich visuals | ❌ | Lossy |
PNG | Logos, UI elements | ✅ | Lossless |
SVG | Icons, illustrations | ✅ | Vector (small & scalable) |
WebP | Modern web images | ✅ | Lossy/Lossless |
GIF | Simple animations | ✅ | Lossless (limited colors) |
Choosing the right format ensures faster load times, visual clarity, and better performance across devices.
Choosing the right format affects load time, clarity, and performance.
Different parts of a webpage and social platforms require specific image dimensions to look good and load efficiently. Using the correct size improves performance, layout consistency, and branding.
Images can be added to HTML using the <img>
tag or via CSS for decorative or background use.
<img src="/images/banner.jpg" alt="Site Banner" width="600" />
div {
background-image: url('/images/bg.jpg');
background-size: cover;
}
alt
attributes for accessibilityloading="lazy"
) to defer off-screen imagessrcset
for better device scalingOptimized and accessible images improve user experience, SEO, and overall site performance.