Base64 Encode / Decode
Convert text to and from Base64 encoding.
By The Paper Room Editorial Team — Developer Tools
Frequently asked questions
What is Base64 encoding used for?▼
Base64 converts binary data into a text-safe format using only ASCII characters. Common uses include embedding images in HTML/CSS (data URIs), encoding email attachments (MIME), and passing binary data through text-only channels like JSON APIs.
Does Base64 encoding provide encryption?▼
No. Base64 is an encoding scheme, not encryption. Anyone can decode Base64 text back to its original form. It provides no security or confidentiality — use it for data format compatibility, not for hiding information.
Is there a size limit on what I can encode?▼
The practical limit is your browser's available memory. Note that Base64 encoding increases data size by approximately 33%, so a 10MB file becomes roughly 13.3MB of Base64 text.