Base64 Encoder & Decoder
Quickly convert text to Base64 and back again.
Our Base64 Encode / Decode tool allows you to convert text, binary data, or code
into Base64 format instantly. Whether you’re a developer, designer, security
researcher, or simply handling encoded strings, this tool helps you transform
data quickly and safely without installing any additional software.
What Is Base64 Encoding?
Base64 is a widely used encoding method that converts binary data into a readable
string format made up of letters, numbers, and symbols. It is not a
cryptographic method, but a reversible way to represent data using printable
characters. This makes it ideal for transmitting files, images, or code through
channels that only support text.
Why Do Developers Use Base64?
- To embed images directly inside HTML or CSS files.
- To safely transfer data through APIs or JSON without breaking formatting.
- To encode files for email attachments or URL-safe transmission.
- To avoid data corruption during network transfer.
- To convert binary output into readable text for debugging.
How Base64 Encoding Works
Base64 takes groups of three bytes and converts them into four characters.
Each character represents a 6-bit value. Since all characters are printable,
the encoded output becomes safe for use in environments that don’t support raw
binary. Although the encoded size increases by roughly 33%, it ensures maximum
compatibility across systems.
What Is Base64 Decoding?
Decoding is the reverse process. It takes encoded Base64 text and converts it
back to its original format—whether it was an image, a text value, a file, or
any binary data. Our tool performs this instantly and completely in your browser,
ensuring full privacy and data security.
Common Use Cases
- Embedding Base64 images in HTML
<img>tags. - Decoding JWT tokens for debugging.
- Encoding API keys or credentials during development (not for security).
- Preparing data for email MIME formats.
- Testing encoded strings when working with encryption libraries.
Benefits of Using This Base64 Encoder / Decoder
- Instant results — no delays or server processing.
- 100% browser-based — your data never leaves your device.
- Supports large input sizes for images or long strings.
- Clean, modern interface optimized for fast productivity.
- Developer-friendly output with auto-formatting options.
Is Base64 Safe?
Base64 is not a security feature. Anyone can decode Base64 using
a simple tool. It should not be used for encrypting passwords, secrets, or
sensitive information. Its primary purpose is formatting and compatibility, not
protection. For security, always use proper encryption methods instead.
How to Use the Tool
- Paste your text or binary data into the input box.
- Select Encode or Decode.
- Click the button to generate instant results.
- Copy the output or download it as needed.
Final Thoughts
Base64 encoding remains one of the simplest and most reliable ways to convert
binary data into plain text for storage and transmission. Whether you are
debugging an issue, building a web application, or analyzing encoded strings,
this tool offers a fast, accurate, and secure solution right inside your browser.