Encode text or files to Base64 and decode Base64 strings instantly — all processing happens in your browser, nothing is sent to a server.
Base64 is an encoding scheme that converts binary data into a text format using 64 printable ASCII characters (A–Z, a–z, 0–9, +, /). It is widely used to transmit binary data over text-based protocols such as email, JSON APIs and data URLs.
Base64 is used to embed images in HTML or CSS as data URLs, encode binary attachments in email (MIME), pass binary data in JSON payloads, store credentials in HTTP Basic Authentication headers, and encode JWT tokens.
No. Base64 is encoding, not encryption. It does not provide any security or confidentiality — any Base64 string can be decoded instantly. Do not use Base64 to hide sensitive data.
Yes. All encoding and decoding happens entirely in your browser using JavaScript. Your text or file is never sent to any server.
Yes. Switch to the File tab, drop or select any file, and the tool will encode it to a Base64 string in your browser without uploading it anywhere.
A data URL embeds file content directly in HTML or CSS using Base64 encoding — for example: data:image/png;base64,iVBOR… This lets browsers display images or load resources without a separate HTTP request.