Parse and inspect URL query parameters as structured key-value pairs. Decodes URL-encoded values and displays them in a readable JSON format. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Parse any URL into its components — protocol, hostname, path, query parameters, hash, and more with copy-to-clipboard. Host, path, query, and fragment split with decoding — debug redirect chains precisely. Runs locally, free, no signup.
Parse Set-Cookie headers into structured JSON, or analyze cookie security flags (Secure, HttpOnly, SameSite, expiry). Flag missing Secure, HttpOnly, and SameSite attributes — free, local, no signup.
Flatten nested JSON objects into dot-notation key-value pairs. Unwrap complex hierarchies for tabular processing. Dot-notation paths preserve nesting info for spreadsheets and logs — local processing, free, no signup.
Share secrets securely via self-decrypting note links — AES ciphertext in the URL fragment, key in the link query. Send passwords without trusting inboxes — local crypto-js AES, free, no signup.
Pull tables, form fields, and key-value pairs from stacks of PDFs into one clean CSV. Accountants turn 60 invoices into a spreadsheet in an afternoon — local pdf-lib parsing, 2 free batches a day.
?a=1&a=2 becomes a proper list here — never last-wins overwrites, order preserved.
%20, %2F, and UTF-8 sequences decode automatically on parse.
PHP-style foo[bar] structures nest correctly into real nested objects.
No — parsing runs locally in your browser, free with no signup.
The default ?name=Alice&age=30&active=true&tags=admin,user yields 4 keys pretty-printed with JSON.stringify(params, null, 2). Parsing strips one leading ?, splits on & and the first =, decodeURIs both sides (missing values become ''), repeated keys overwrite so the last wins, and output saves as query-params.json.
URL Parser
Parse any URL into its components — protocol, hostname, path, query parameters, hash, and more with copy-to-clipboard. Host, path, query, and fragment split with decoding — debug redirect chains precisely. Runs locally, free, no signup.
JSON to URL Parameters
Flatten JSON objects into URL query strings — nest with bracket notation. Build ?filter[x]=1 links from API objects — local conversion, free, no signup.