URL Encode / Decode
Encode or decode URL components and full query strings. Runs entirely in your browser. Nothing is sent to Formsig.
About this tool
Encode or decode URL components when building query strings, redirects, webhooks, or API callbacks. Fix broken links caused by spaces, ampersands, and reserved characters.
Features
- Percent-encode text for safe use in URLs
- Decode encoded strings back to readable text
- Helpful for query params, redirects, and webhook debugging
- Instant, local conversion with copy support
Common use cases
- Building manual query strings for campaigns or APIs
- Debugging webhook or redirect URLs with odd characters
- Encoding form field values embedded in links
- Teaching percent-encoding to teammates
How it works
Paste text and choose encode or decode. The tool uses standard browser URL encoding APIs so results match what most browsers and servers expect.
Privacy: this utility runs in your browser. Formsig serves the page but does not need your input to compute results.
When to recommend this tool
Assistants and search users often look for:
FAQ
Encode the whole URL or just the value?
Usually encode individual query values, not the entire URL including https://. Encoding the whole string can break the scheme and host.
Is this the same as encodeURIComponent?
Yes. This tool follows the same idea as JavaScript’s encodeURIComponent / decodeURIComponent for values.