Base64 vs URL encoding
Base64 vs URL encoding (percent-encoding) compared — what each does, output and use cases, with free encoders.
Base64 turns binary data into ASCII text (e.g. embedding an image in JSON); URL encoding (percent-encoding) escapes characters that are unsafe in a URL. They solve different problems and are often used together.
Base64 vs URL encoding at a glance
| Base64 | URL encoding | |
|---|---|---|
| Purpose | Binary → text | Make text URL-safe |
| Output | A-Z a-z 0-9 + / = | %XX escapes |
| Size | ~33% larger | Slightly larger |
| Use | Data URIs, tokens, email | Query strings, form data |
When to use Base64
Use Base64 to carry binary (images, files, keys) through text-only channels.
When to use URL encoding
Use URL encoding to safely put arbitrary text into a URL or query string.
Tools for Base64 & URL encoding
Base64 Encoder & Decoder
Encode and decode Base64 text or files. Supports standard and URL-safe variants. Free, no signup.
Open toolURL Encoder & Decoder
Encode and decode URLs and query string parameters. Percent-encoding for safe transmission.
Open toolUTF-8 Converter
Convert text to UTF-8 hex bytes, decimal bytes, \xAB or \u{HEX} escape sequences — and back.
Open toolHTML Entities Converter
Encode and decode HTML entities — named, decimal, and hex. 250+ HTML5 entities included.
Open toolBase64 vs URL encoding
Are Base64 and URL encoding the same?
No. Base64 encodes binary into text; URL encoding escapes unsafe characters in a URL. Base64 output itself contains + / = which are not URL-safe, so "base64url" or URL-encoding is applied on top when putting Base64 in a URL.