← URL Anatomy

Why use URL Anatomy?

URL Anatomy is a URL Decoder and JWT Debugger that runs entirely in your browser. It is designed for developers, marketers, and data teams who need to understand complex links, deep-link URLs, redirect chains, and API calls quickly.

Because all parsing and analysis is performed locally, no data leaves your device. This makes the tool suitable for inspecting production URLs, debugging tokens, and running a lightweight security review of links that may contain sensitive information.

You can use URL Anatomy as a Timestamp Converter, Clean URL helper, and structured parameter inspector when you are working with logs, analytics dashboards, marketing campaigns, or API-driven backends.

How to use URL Anatomy step by step

  1. Copy a URL, cURL command, or JSON payload from your browser, logs, API client, or documentation.
  2. Paste it into the main input on the home page. The tool automatically detects whether the input is a URL, cURL command, or raw JSON.
  3. Review the decoded structure: protocol, host, path segments, query parameters, headers, and payload. For cURL, the HTTP method and headers are extracted for you.
  4. Use the editable tables to change path segments, query parameters, headers, or JSON fields. A new URL or cURL command is generated as you type.
  5. Copy the cleaned or updated URL back into your browser, codebase, or documentation once you are satisfied with the result.

Understand your URL parameters

JWT Debugger

Paste a URL with a token or jwt parameter. URL Anatomy decodes the header and payload locally so you can verify claims, expiry, and audience without exposing tokens to external services.

UUID and identifiers

URLs often carry UUIDs, CUIDs, or long hex strings in the path or query string. These are detected and labeled so you can quickly distinguish resource identifiers from tracking parameters when refactoring APIs or cleaning links for sharing.

Timestamp Converter

Unix timestamps in parameters such as exp, iat, or ts are detected and shown in human-readable form. This is useful for debugging authentication flows, scheduled jobs, and audit logs.

Clean URL for SEO and sharing

Marketing and tracking query parameters such as UTM tags, fbclid, and gclid are highlighted, and you can generate a clean version of the URL with those values removed. This helps when you need a readable, long-term link for documentation or user communication.

Security review of links

Potentially sensitive patterns such as API keys, access tokens, connection strings, and wallet addresses are highlighted. This makes it easier to spot information that should not be committed to public repositories or sent in support tickets.

Base64 and JSON payloads

Encoded query or path segments are decoded when safe, and nested JSON payloads are pretty-printed. This is particularly helpful for webhook URLs, signed links, and mobile deep links that pack structured data into a single parameter.

How to decode JWT tokens securely

JWTs are widely used for authentication and authorization. When a token is embedded in a URL, it is often difficult to inspect without sending it to a remote service. URL Anatomy decodes JWTs directly in your browser so you can check the structure and claims while keeping control of the token.

Paste a URL that contains a JWT, for example in a token or access_token parameter. The tool splits the token into header, payload, and signature, and shows the decoded JSON for the first two parts. The signature is not verified because that would require your private key or secret.

Use this view to confirm expiration times, audiences, and custom claims. Because the processing is client-side, your tokens never leave your device and are not stored or logged.

What is a Timestamp Converter?

Many APIs, audit logs, and JWTs represent time as numeric Unix timestamps. Manually converting those values in another tool slows down debugging and increases the risk of mistakes.

URL Anatomy scans parameters and decoded payloads for timestamp-like values and shows the equivalent dates in your locale. This helps you quickly understand when a token expires, when a background job is scheduled to run, or when a user action was recorded, without leaving the page.

Frequently asked questions

Are my tokens and URLs safe? Is anything sent to your servers?
All decoding and analysis runs client-side in your browser. We do not send, store, or log the content that you paste into the tool. After the page has loaded, the core functionality can work even if you go offline.
How do I decode Base64 or nested JSON in a URL?
Paste the full URL into the input. URL Anatomy detects Base64-encoded values in query or path segments and shows the decoded result. If the decoded value is JSON, it is parsed and rendered in a readable format so you can inspect keys and values without leaving the page.
Can I use this tool as part of a security or privacy review?
Yes. The tool highlights patterns that often indicate secrets or sensitive data and helps you spot information that should be removed from public logs, repositories, or support tickets. Because everything is processed locally, you can safely inspect production URLs and tokens as part of your review process.
Who is URL Anatomy designed for?
The tool is primarily designed for software engineers, SREs, security engineers, analysts, and marketers who regularly work with URLs, redirects, and tracking parameters. However, anyone who needs a clear explanation of a long or complex URL can benefit from it.

Privacy-first. URL Anatomy is a URL Decoder, JWT Debugger, and Timestamp Converter that runs in your browser without server-side processing. Use it to decode JWTs, clean URLs, and perform a lightweight security and analytics review of your links while keeping control of your data.