Base64 Encode / Decode
Base64 Encode / Decode
About Base64 Encode / Decode
Base64 encode online and base64 decode online with our free converter. Convert text, binary data, and API tokens to and from Base64 format instantly. Use this base64 converter for safe data transport, embedding in JSON or XML, and debugging encoded payloads — all in your browser.
Example
Input
Hello, World!Output
SGVsbG8sIFdvcmxkIQ==Why Use Base64 Encode / Decode?
- Safe data transport — Transmit binary data over text-based protocols like JSON, XML, and email without corruption.
- Embedding in JSON/XML — Encode images, files, or binary payloads for inclusion in structured data formats.
- Debugging encoded payloads — Decode Base64 strings to inspect tokens, credentials, or API responses.
Base64 Encode / Decode FAQs
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as an ASCII string. It is commonly used to embed images in HTML, transmit data in URLs, and encode credentials in HTTP headers.
Is Base64 encryption?
No. Base64 is an encoding, not encryption. It is fully reversible and provides no security. Anyone can decode a Base64 string back to its original form.
When should I use Base64?
Use Base64 when you need to safely transmit binary data over text-based protocols like JSON, XML, email (MIME), or data URIs in CSS and HTML.
Can Base64 handle binary data?
Yes, Base64 is designed to represent binary data in ASCII text. It converts any binary input (images, files, raw bytes) into a safe string that can be transmitted over text-based systems like JSON, XML, or email.
What is the Base64 alphabet?
Base64 uses A-Z, a-z, 0-9, +, and / as its 64 characters, with = for padding when the input length is not a multiple of 3. This limited character set ensures compatibility with systems that only support ASCII.