Base64 encoder & decoder
Convert text to Base64 and back, instantly. Full Unicode (UTF-8) support — runs entirely in your browser.
What is Base64?
Base64 encodes binary or text data into a set of 64 safe ASCII characters, so it can travel through systems that only handle text — like embedding images in CSS/HTML (data URIs), encoding email attachments, or storing data in JSON and URLs. It isn't encryption: anyone can decode it. This tool handles full UTF-8, so emojis and accented characters work correctly.
Is Base64 secure?
No — it's encoding, not encryption. Don't use it to protect secrets; it's trivially reversible (that's the point of this tool).
Is my data uploaded?
No. Encoding and decoding happen entirely in your browser.