Base64 Encoder
Encode any text or data to Base64 format instantly in your browser. Base64 encoding converts binary data into ASCII text, making it safe to embed in JSON, XML, HTML, URLs, and email. Choose between standard Base64 and URL-safe encoding.
Frequently Asked Questions
›What is Base64 encoding?
Base64 encoding converts binary data into a set of 64 ASCII characters (A-Z, a-z, 0-9, +, /). This makes binary data safe to transmit through text-based protocols like HTTP, email, and JSON. The encoded output is about 33% larger than the original.
›When should I use Base64 encoding?
Use Base64 when you need to embed binary data in text formats: data URIs in HTML/CSS, JSON payloads with binary content, email attachments (MIME), API request bodies, and storing binary data in text-only databases.
›Is this free and private?
Yes. Encoding runs entirely in your browser — no data is uploaded, stored, or logged. It's 100% free with no limits.