Dev
Base64 String Encoder
Base64 encoding shows up constantly — data URLs, basic auth headers, JSON Web Token parts, email attachments, and inline assets all use it. When you need to encode a string and verify the result, switching to a terminal or pulling up a dev tool is a friction point. This tool encodes your input to Base64 immediately so you can copy and use the result. Type or paste any text into the input field and click generate. The encoder converts the text to UTF-8 bytes first, so accented characters, emoji, and other non-ASCII input encode correctly and decode back to the original without data loss. The output is standard Base64 using the A-Z, a-z, 0-9, +, and / alphabet with = padding. Base64 is encoding, not encryption. The output can be decoded back to the original by anyone with a Base64 decoder, which is every browser and most programming languages. Never use it to obscure passwords or secrets — use it only to make arbitrary data safe to carry through text-based channels like HTTP headers and HTML attributes.
How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Type or paste the text to encode.
- Click Generate to produce Base64.
- Copy the encoded string.
- Paste it wherever you need it.
Use Cases
- •Encoding text for a data URL
- •Preparing a basic auth header value
- •Debugging an encoded value
- •Embedding a small asset inline
- •Transporting data through text channels
Tips
- →Base64 is encoding, not encryption.
- →Never use it to protect secrets.
- →It handles Unicode correctly.
- →Decode it back with any Base64 tool.
FAQ
what is Base64 used for
Base64 encodes data as a safe set of ASCII characters so it can pass through text-based systems — data URLs, email, API tokens, and basic auth headers all use it. It lets arbitrary or binary data travel where only text is expected.
does it handle Unicode and special characters
Yes. This encoder converts the text to UTF-8 bytes before encoding, so accented letters, symbols, and emoji encode correctly and decode back to exactly what you put in, without corruption or data loss.
is Base64 the same as encryption
No. Base64 is encoding, not encryption — anyone can decode it back to the original instantly. It provides no security at all, so never use it to protect passwords or secrets. It only makes data safe to transport as text.
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