Working with query strings
Query strings pass parameters in a URL after the "?" symbol. This tool parses them into a readable table and rebuilds a clean query string from the same values.
Query String Parser
Paste a URL or query string to see every parameter listed as key-value pairs.
| Key | Value |
|---|
How it works
- 1
Paste your input into the editor.
- 2
Choose format / mode options if available.
- 3
Copy the transformed output (it usually updates as you edit).
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Query String Parser
Paste into Query String Parser, tweak options, and copy the output. Formatting and conversion run in the browser for this tool.
Tips for better results
Keep a backup of original input before bulk transforms. Invalid input should show an error instead of silent corruption.
Privacy and offline-friendly processing
Whenever possible, Query String Parser processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Can I paste a full URL?
Yes, the tool automatically extracts everything after the "?" if a full URL is pasted.
Does it handle duplicate keys?
Yes, repeated keys appear as separate rows, matching how URLSearchParams handles them.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Query String Parser free to use?
Yes. Query String Parser is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Query String Parser work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.