▚ sandboxmax

Nested Query Parameter Parser

Pre-loaded with a webhook URL of the painful kind: array-style keys, percent-encoded values, and a callback parameter that contains an entire second URL, encoded, with its own query string inside. The Smart Parameter Grid decodes every layer into readable key/value rows — paste the decoded callback back in to unwrap the next layer.

runs 100% in your browser — URLs are parsed, never visited

  1. 1Paste URL or textAny string works — full URLs unlock the parameter grid automatically.
  2. 2Encode or decodeOne click either way; your last action keeps re-running live as you type.
  3. 3Work the param gridEvery query key decoded into rows, trackers flagged amber — copy a clean URL or the params as JSON.

The last action re-runs live as you type. Everything uses your browser’s nativeencodeURIComponent / URLSearchParams — URLs you paste are never requested or transmitted.

base domain: —parameters: —

More URL tools

/url/url-encode-decode-strings

URL Encoder / Decoder

/url/sanitize-utm-tracking-tokens

UTM & Tracking Token Sanitizer

Is it safe to paste sensitive data into the Nested Query Parameter Parser?

Yes. The Nested Query Parameter Parser runs 100% client-side inside your browser thread — nothing you paste is uploaded, logged, or transmitted. SandboxMax is a static site with no backend server, no cookies, and no trackers: open your browser's network panel while you work and you'll see zero requests leave the tab.