How to Encode and Decode Base64 Text Safely

Base64 is a way to represent binary or Unicode data as plain text. Developers often use it in API payloads, tokens, data URLs, configuration files, and quick debugging sessions.

The NeatForge Base64 Encoder/Decoder lets you encode and decode text in your browser, including URL-safe Base64 strings.

Standard Base64 vs URL-Safe Base64

Standard Base64 commonly uses +, /, and = padding. That works well in many files and API payloads, but those characters can be awkward inside URLs.

URL-safe Base64 replaces:

• + with -
• / with _
• optional padding = may be removed

If you are working with query strings, JWT-like values, or route parameters, URL-safe mode is usually the better choice.

How to Encode Text

1. Open the Base64 Encoder/Decoder.
2. Choose Standard Base64 or URL-safe mode.
3. Paste the text you want to encode.
4. Click Encode.
5. Copy the result.

How to Decode Base64

1. Paste the Base64 string into the input field.
2. Select the matching mode.
3. Click Decode.
4. Review the decoded text.

If decoding fails, check for missing characters, extra spaces, or the wrong mode. URL-safe Base64 often needs URL-safe mode because - and _ are interpreted differently from standard Base64.

Privacy Note

Encoding can reveal sensitive data if you paste secrets into a third-party service. NeatForge processes the text locally in your browser, so the input is not uploaded to our server.

→ Open the free Base64 Encoder/Decoder