ENCODING TOOL · CLIENT-SIDE
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 strings back to readable text. Runs entirely in your browser — nothing is uploaded.
Input
Output
About Base64 Encoding
What is Base64?
Base64 represents binary data using 64 ASCII characters, making it safe for text-based systems.
Common uses
Embed images in HTML, transmit data in JSON APIs, and encode email attachments.
Not encryption
Base64 is encoding, not encryption. Anyone can decode it easily without a key.
Frequently Asked Questions
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters (A-Z, a-z, 0-9, +, and /). It converts any data into a string safe for text-based systems like email, URLs, and JSON.
When should I use Base64 encoding?
Use Base64 when you need to embed binary data (like images) in HTML/CSS, transmit binary data over text-based protocols (JSON APIs, email), or store binary data in text databases. It is not suitable for compression or security.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It provides zero security or confidentiality. Anyone can decode a Base64 string using any online tool or programming language. For security, use proper encryption like AES-256.