Base64 encode/decode
Encode or decode Base64 text instantly
Output
About this tool
Encode plain text into Base64 or decode Base64 back to its original content instantly. Ideal for developers working with APIs, JSON, HTML, CSS, email attachments, and embedded data. Fast, secure, browser-based, and completely free with no software required.- 100% free. No registration required.
- Runs in the browser. No data is sent to the server.
LIMITS
Unlimited usage via the browser.Tips
- - Base64 encoding increases the size of the original data by approximately 33%.
- - Base64 is an encoding format, not encryption. Never use it alone for sensitive passwords or secure data.
- - Embed small icons or images directly into HTML/CSS using Base64 to reduce HTTP requests and speed up page loads.