KitYards Base64 Encoder / Decoder converts plain text to Base64 and decodes Base64 back to readable text in an instant. It is fully UTF-8 safe, so accented letters, emoji and non-Latin scripts convert correctly both ways. Ideal for data URIs, API tokens and debugging, the tool processes everything locally in your browser so your data is never uploaded, stored or exposed.
How to use the Base64 Encoder / Decoder
- 1 Paste your text or Base64 string into the input box.
- 2 Choose whether to encode or decode the content.
- 3 View the converted result instantly in the output area.
- 4 Copy the result to use in your code, URL or API request.
What is Base64 encoding and when to use it
Base64 is an encoding scheme that represents binary or text data using a set of 64 ASCII characters, making it safe to transmit through channels that only reliably handle text. Developers use it to embed images and fonts directly in HTML or CSS as data URIs, to encode credentials in HTTP Basic Auth headers, to inspect JSON Web Tokens, and to move small binary payloads through JSON APIs and email. This tool encodes and decodes in both directions with proper UTF-8 handling, so multibyte characters survive the round trip intact. Because Base64 is encoding and not encryption, it does not secure your data, it only reformats it. All conversion happens client-side in your browser, meaning sensitive tokens and payloads never touch a remote server.
Frequently Asked Questions
Is Base64 encoding the same as encryption?
No. Base64 only reformats data into text and is fully reversible by anyone. It provides no security or secrecy. Never rely on Base64 to protect passwords or sensitive information; use real encryption for that purpose.
Is my data uploaded when I encode or decode?
No. All encoding and decoding happens locally in your browser using native JavaScript. Your text and Base64 strings are never sent to a server, so tokens and private payloads stay entirely on your device.
Does it handle emoji and accented characters?
Yes. The tool is UTF-8 safe, so emoji, accented letters and non-Latin scripts encode and decode correctly in both directions without corruption or replacement characters, preserving your original text exactly.