Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text instantly.
Drop a file or click to browse
Max 5MB recommended
About Base64 Encoder/Decoder
Encode text or files to Base64 and decode Base64 back to text. Supports URL-safe encoding, data URI generation, and file encoding. Handles Unicode/UTF-8 text properly. All processing is done in your browser — nothing is sent to any server.
Frequently Asked Questions
Base64 is a binary-to-text encoding scheme that represents binary data as ASCII characters. It is commonly used to embed images in HTML/CSS, send data in URLs, and transmit binary content in text-only protocols.
No, Base64 is encoding, not encryption. It does not provide any security. Anyone can decode Base64-encoded data. For security, use proper encryption algorithms.
Base64 increases data size by approximately 33% because it uses 4 characters to represent every 3 bytes of binary data. This trade-off enables safe transport through text-only systems.
Common uses include embedding small images in CSS/HTML (data URIs), sending binary attachments in email (MIME), transmitting data in JSON/XML, and encoding data for URL parameters.
Before You Use This Tool
A quick overview of what this page is good for, how it handles data, and what to expect before you start.
What It Does
- Encode text to Base64 or decode Base64 back to plain text instantly
Access & Privacy
You can use the main workflow without creating an account.
The core workflow is designed for fast in-browser use. Review the page inputs before pasting sensitive information.
Good Fit For
- Debug payloads, strings, and markup quickly during daily development.
- Generate copy-ready output without installing another package.
- Test ideas in the browser before moving into a bigger workflow.
For repeated bulk jobs or advanced automation, dedicated desktop software may still be faster.