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Browser tool

URL Parser & Query Encoder — About

Understand parsing modes, privacy boundaries, and best practices for using the URL inspector in production workflows.

Key points

Purpose-built diagnostics

Break down complex URLs so marketing, product, and engineering teams can verify campaign tags, OAuth callbacks, and feature flags before launch.

Privacy by default

Everything happens in the browser. Share links encode state client-side and can be cleared anytime, keeping sensitive tokens off third-party servers.

Advanced query controls

Toggle the qs parser for nested structures, preserve order to match logs, and compare encoded versus decoded output for compliance reviews.

The URL Parser & Query Encoder exists to make debugging complex links less painful. Instead of manually decoding percent-encoded characters or reconstructing arrays by hand, you can toggle between flat and structured views that reflect how most web frameworks parse query strings today.

Key behaviors

  • Supports repeated keys while preserving order for log comparisons.
  • Offers optional qs parsing for deep objects and bracket-based arrays.
  • Generates normalized URLs so clipboard shares are consistent and reliable.
  • Provides encoded and decoded query previews to catch escaping mistakes early.

Security and privacy stance

No data leaves your browser. Share links store state in the URL itself using Base64url encoding. If a link includes secrets, treat it like any other sensitive document and clear the state before circulating it widely.

When to reach for alternative tools

For full HTTP request/response validation you still need tools like Postman, cURL, or your observability stack. Pair this inspector with those systems to trace issues from the URL layer all the way through backend behavior.

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How to use this tool

  1. Step 1

    What the tool excels at

    Inspecting and tweaking complex query strings without losing character encoding fidelity or parameter order, especially for analytics, SSO, and webhook payloads.
  2. Step 2

    How to use it responsibly

    Review generated URLs before sharing them outside your organization. Remove tokens or credentials from the structured JSON if you plan to send the link externally.
  3. Step 3

    Limitations to consider

    The parser focuses on client-side inspection. It does not fetch remote resources or validate endpoint responses, so keep HTTP inspectors or proxy tools handy for full testing.

Frequently asked questions

Does the parser support relative URLs?
Yes. If you paste a URL without a protocol, the tool assumes https:// for analysis. You can update the protocol field to http, custom schemes, or protocol-relative URLs as needed.
What happens to parameters without values?
The tool keeps empty values intact instead of discarding them. That way you can debug cases where the presence of a key matters even if the value is blank.
Can I export the structured JSON?
Absolutely. Copy the JSON from the structured parameters textarea when qs mode is enabled. It mirrors the object that generates your final query string.

The URL Parser is a diagnostics aid, not a security scanner. Continue following your organization’s secure handling practices for secrets, webhooks, and signed URLs.

URL Parser & Query Encoder — About & FAQ | WebUtility.org