URL Parser

The tool automatically computes and displays the base domain (registrable domain portion, e.g., "example.com" from "www.example.com") and reports the TLD separately. The domain field shows the base domain, while TLD shows the top-level domain (.com, .org, etc.) for easy domain extraction and analysis.

Common causes include missing protocol prefix (add https:// or http://), invalid characters that aren't percent-encoded, or malformed URL structure. Ensure URLs start with a valid protocol, have proper encoding for special characters, and follow URL specification format. Invalid URLs cannot be parsed correctly by URL parsers.

Encode each parameter value individually using encodeURIComponent() in JavaScript, then join parameters using URLSearchParams or proper & separators. Never encode the entire URL—only encode parameter values. This prevents double-encoding issues and ensures proper URL structure while maintaining encoding safety for special characters.

No, all URL parsing and building happens entirely locally in your browser using JavaScript URL APIs and URLSearchParams. No URLs, parameters, or data is transmitted to external servers, ensuring complete privacy and security for sensitive URLs containing API keys, tokens, or other confidential information.

encodeURIComponent encodes individual URL components (like parameter values) and encodes more characters, while encodeURI encodes entire URLs but preserves some special characters like / and :. Use encodeURIComponent for query parameter values, and avoid encoding entire URLs to prevent double-encoding issues in URL construction.

The tool automatically extracts and displays the fragment portion (everything after #) separately from other URL components. Fragments are typically not sent to servers and are handled client-side by browsers, so they're parsed but shown separately in the component breakdown for clarity and proper URL understanding.

URL parsing requires absolute URLs with protocols (http:// or https://) to correctly extract components. Relative URLs need a base URL context. If you have a relative URL, combine it with a base URL first, or the parser may fail or produce incorrect component extraction results due to missing protocol information.

Query parameters with the same key appearing multiple times (e.g., ?tag=value1&tag=value2) are shown with all values in the parsed parameter list. The URL Builder supports adding multiple values for the same parameter key, ensuring proper URL construction for parameters that accept multiple values according to URL standards.

The tool shows both encoded and decoded representations where applicable. Unicode characters in paths or parameters should be percent-encoded according to URL standards. The parser extracts components as they appear (encoded or decoded), while the builder automatically handles proper encoding when constructing URLs with special or Unicode characters.

Yes, the tool uses the platform URL parser which validates URL format according to URL specification standards. If parsing succeeds, the URL format is valid. Failed parsing indicates format issues. However, format validity doesn't guarantee the URL is accessible or points to a valid resource—additional validation may be needed for actual URL reachability.

Use the URL Builder to add parameters one by one, or manually join parameters with & separators: ?key1=value1&key2=value2. Ensure each value is properly encoded with encodeURIComponent(). The tool's builder automatically handles encoding and separator insertion, making it easy to construct complex URLs with multiple parameters safely.

Yes, many browsers and servers enforce URL length limits (typically around 2048 characters). Extremely long URLs with many query parameters may be truncated or rejected. If you need to send large amounts of data, consider using POST requests with request bodies instead of GET requests with long query strings to avoid URL length limitations and improve security.