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Base64 Encode & Decode
Encode text or a file to Base64, or decode Base64 back to text. UTF-8 and URL-safe.
How it works
URL Encode & Decode
Percent-encode a value before it goes into a URL, or decode a link full of %20 and %3D so you can read it. Choose whether slashes and question marks get encoded too.
Paste or type to begin. Everything runs in your browser.
- 01
Choose Encode or Decode and paste your text or URL.
- 02
For encoding, pick Component to escape everything for a query value or path segment, or Full URL to keep : / ? & = in place.
- 03
Copy the result. Tick Each line separately to convert a list of values at once.
Good to know
- Use Component for a single value, like a search term or a redirect URL inside a query string. Full URL is for tidying a whole address that has spaces or accented letters in it.
- HTML forms send spaces as +. Tick Spaces as + to encode that way, or to read + as a space when decoding form data or a Google search URL.
FAQ
Frequently asked questions
What's the difference between %20 and +?
Both mean a space. %20 works anywhere in a URL; + only means a space in query strings sent by forms. In a path, + is a literal plus sign.
Which characters are left alone?
In Component mode, letters, digits and - _ . ! ~ * ' ( ). Full URL mode also keeps ; , / ? : @ & = + $ #, the characters that give a URL its structure.
Why did decoding fail?
A % must be followed by two hex digits, and the bytes must form valid UTF-8. A stray % (as in “100%”) needs to be written as %25.
Missing something?
Tell us the tool you wish existed.
Describe the job and the file types involved. The most requested tools get built first.