URL Encoder
Turn any URL or string into a safely encoded version that works in query strings, links and API parameters. Encode special characters instantly.
What is URL Encoder – Encode URL Online?
Percent-encode any URL or string instantly. Turn any URL or string into a safely encoded version that works in query strings, links and API parameters. Encode special characters instantly. The tool runs 100% in your browser — nothing is uploaded to a server, so your data stays private, and it is free to use with no signup required.
Quick Answers
- What characters does URL encoding affect?
- Everything except letters, digits and a small safe set (- _ . ~). Spaces, symbols and non-ASCII characters become percent-encoded sequences.
- What is the difference between %20 and +?
- In query strings, + may be decoded as a space (form encoding). The optional toggle lets you choose which convention to use.
- Is URL encoding reversible?
- Yes, use the URL decoder tool to turn the encoded string back into its original form.
How do I use URL Encoder – Encode URL Online?
- Paste the URL or text you want to encode.
- Special characters are percent-encoded instantly.
- Copy the encoded result or download it as a file.
Why use our url encoder – encode url online?
Unencoded special characters in URLs cause broken links and API failures. This encoder percent-encodes every character that is unsafe in a URL, including spaces, &, =, ? and non-ASCII characters, so your links always transmit exactly what you intend. An optional toggle encodes spaces as + for form-encoded payloads. Encoding is instant, unlimited and fully client-side.
Making free text safe for query strings and slugs
Spaces, unicode and reserved characters like & and = break URLs unless they are percent-encoded. This example shows a search phrase before and after URL encoding.
Plain text input
What is a "smart contract" & how does it work? (Beginner's guide)
URL-encoded output
What%20is%20a%20%22smart%20contract%22%20%26%20how%20does%20it%20work%3F%20%28Beginner%27s%20guide%29
Paste free text that needs to travel inside a URL (query params, redirect targets, slug generation) and copy the percent-encoded version your links can safely contain.
Frequently Asked Questions
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