Flatten JSON objects into URL query strings — nest with bracket notation. Build ?filter[x]=1 links from API objects — local conversion, free, no signup.
Content reviewed October 2026 · About Toolzum
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.
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.
Turn endpoint descriptions into clean API docs with parameters, responses, and curl samples. Document as you build, not after — local generation, 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.
Build tagged campaign URLs with utm_source, medium, campaign, term, and content — no broken query strings. Tag 50 launch links without typos — free, local, copy-paste.
Bracket notation (filter[x]=1) or dot notation per setting — servers parse brackets most widely. Arrays repeat keys or index them.
Percent-encoded automatically — spaces, ampersands, and Unicode can't break the query. Never hand-encode; double-encoding is the classic bug.
Parse query strings back to objects with a URL parser for verification. Brackets and dots must agree both directions.
No — conversion runs locally in your browser. Data never leaves your device.
Query String Parser
Parse and inspect URL query parameters as structured key-value pairs. Decodes URL-encoded values and displays them in a readable JSON format.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.