Convert text or files to Base64 encoding and back. Supports UTF-8 text, images, PDFs, and binary data. Decode inline data URIs instantly.
Base64 Encoder & Decoder is a browser-based tool on 24Toolkit. Convert text or files to Base64 encoding and back. Supports UTF-8 text, images, PDFs, and binary data. Decode inline data URIs instantly. Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The primary purpose of Base64 encoding is to allow data to be transmitted over media that are designed to deal with text. This ensures that the data remains intact without modification during transport over protocols like SMTP or HTTP. Our Base64 Encoder/Decoder utility provides a lightning-fast, client-side solution for developers and security professionals. Unlike many other online tools, our implementation processes your data entirely within your browser using the modern TextEncoder and TextDecoder APIs. This means your sensitive strings or code snippets are never sent to a server, ensuring 100% privacy and security.
Key Features
Client-side processing
Full UTF-8 support
Instant conversion
100% private and secure
Swap and continue workflow
How to Use
Select your mode: choose 'Encode' to turn text into Base64, or 'Decode' to reverse the process.
Paste your input into the provided text area. Our tool supports full UTF-8 character sets, including emojis and non-Latin scripts.
The conversion happens instantly when you click the action button. You will see the result in the output field.
Use the 'Copy Result' button to save the output to your clipboard or use 'Swap' to continue processing the data.
FAQ
Is Base64 a form of encryption?
No, Base64 is an encoding scheme, not encryption. It does not hide data; it simply changes the format so it can be safely transmitted over text-based protocols. Anyone can easily decode a Base64 string without a key.
Does this tool handle special characters and UTF-8?
Yes! Our implementation uses the latest JavaScript TextEncoder standards. This ensures that non-ASCII characters, symbols, and various languages are encoded and decoded correctly without data loss.
What are the common use cases for Base64?
Base64 is widely used for including image data in CSS or HTML, transmitting binary files over email (MIME), sending complex data structures in URLs, and basic authentication headers in web development.