ToolsFaction Online Tool
Query String Parser & Builder
Inspect and rebuild URL parameters without manual encoding.
Parse URL query strings into readable key-value lines or build encoded query parameters from pairs.
About This Tool
ToolsFaction Query String Parser & Builder converts between encoded URL query strings and editable key-value lines. It helps inspect API requests, tracking links and application parameters.
How to Use
- Paste a query string and parse it, or enter key-value lines.
- Edit parameter names and values if needed.
- Build the encoded query string.
- Copy the resulting query for your URL.
Example
Parse name=alex&role=developer into readable parameter lines, edit them and rebuild the query.
Frequently Asked Questions
Are values URL encoded when building?
Yes. URLSearchParams applies standard query encoding.
Can duplicate keys be used?
Yes. Multiple lines can use the same key.
Should I include a question mark?
The parser accepts a leading question mark but does not require one.
Does it send requests?
No.
Free to UseNo hidden fees
No Sign-UpStart instantly
Browser-BasedNothing to install
Privacy FriendlyBuilt for simple use