Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8, Unicode and all standard characters.
Related Tools
About this base64 encoder & decoder
The Base64 encoder and decoder converts text and binary-safe strings for APIs, headers, tokens, and configuration values. It runs locally in the browser, which is important when checking credentials or private snippets.
Common uses
- Decode Basic Auth credentials while debugging local integrations.
- Encode small text snippets for API examples.
- Inspect Base64 values copied from JWTs, config files, or logs.
Practical notes
Base64 is encoding, not encryption; anyone can decode it.
When decoding fails, check for missing padding or URL-safe Base64 variants.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It's commonly used to encode binary data (like images or files) for transmission over media designed to handle text.
When should I use Base64?
Base64 is used in email attachments, embedding images in HTML/CSS via data URLs, storing binary data in JSON, and passing data through text-based protocols like HTTP headers.
Does Base64 provide encryption?
No. Base64 is encoding, not encryption. It is reversible and provides no security. For secure data transmission, use proper encryption like AES or TLS.