URL Query Builder
Use the fields above to transform, validate, or format input. Errors appear in the on-page alert when parsing fails.
URL Query Builder
How it works
Parsing and encoding run entirely in JavaScript here—no server sees your pasted content unless a tool explicitly says it fetches remote data.
Quick tips
- Regenerate a few times and keep sample outputs for comparison.
- Copy output directly from this page to avoid retyping errors.
- Use deterministic settings when you need reproducible results.
Use this tool for
- Formatting or minifying snippets before pasting into a repo or ticket.
- Checking encodings (Base64, hex, URL) without third-party paste services.
- One-off developer checks during debugging.
Common questions
Does URL Query Builder cover every edge case for URL Query Builder?
Verify units, bases, and pasted text (hidden spaces or wrong line endings); then spot-check one example by hand if the answer must be exact.
Can I use URL Query Builder offline?
Different rounding or parsing rules can shift edge-case output—sanity-check with a tiny hand example when precision matters.
