Base64 Encoder & Decoder
Encode plain text into Base64 format or decode Base64 strings back to readable UTF-8 text. Includes URL-safe encoding options for developer workflows.
Encode and decode Base64 strings and data URI payloads directly in your browser. Fast, private UTF-8 binary conversion utility with zero server calls.
Key Features
Explore performance capabilities engineered for in-browser execution.
How to Use This Tool
Follow these 3 simple steps to use Base64 Encoder / Decoder directly in your browser.
Paste the plain text you want to encode, or paste a Base64 string you want to decode.
Click 'Encode' to convert text to Base64, or 'Decode' to convert Base64 back to plain text.
Click the 'Copy' button to copy the result to your clipboard instantly.
Universal Base64 Encoding and Decoding for Text & Binary Data
Base64 encoding translates 8-bit binary data into a restricted 64-character ASCII alphabet, allowing binary files and images to travel safely through text-only transmission channels like JSON payloads, HTML data URIs, and email MIME bodies. This tool supports UTF-8 safe text conversion as well as direct binary file encoding.
Encode small icons and SVG graphics directly into base64 data URIs to eliminate extra HTTP requests on high-performance web pages.
Encode "username:password" pairs for HTTP Basic Authorization headers or decode incoming webhook payload secrets.
Our text engine uses UTF-8 byte encoding, ensuring accents, emojis, and international characters encode and decode without mojibake errors.
Frequently Asked Questions
Clear, verified answers to common technical and workflow questions about Base64 Encoder / Decoder.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into an ASCII string. It is commonly used to embed binary data in text-based formats like JSON, XML, and HTML.
What is the difference between Standard and URL-safe Base64?
Standard Base64 uses '+' and '/' characters which are not safe in URLs. URL-safe Base64 replaces them with '-' and '_' so the encoded string can be safely used in URLs and filenames.
Can I decode any Base64 string?
Yes, as long as the Base64 string is valid. If it contains invalid characters, the tool will display a decoding error.
Related Guides & Tutorials
In-depth technical guides, step-by-step walkthroughs, and best practices for Base64 Encoder / Decoder.
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