Base64 Encoder/Decoder
Encode and decode Base64 text with full UTF-8 support. All processing happens in your browser - your data remains private and secure. Perfect for data encoding, API authentication, and binary data transmission.
Input
Output
How to Use
- Enter Text: Type or paste your text/Base64 string in the input field
- Choose Action: Click "Encode" to convert text to Base64, or "Decode" to convert Base64 back to text
- Configure Options: Enable URL-safe encoding, remove padding, or format with line breaks
- Copy or Download: Get your result via copy to clipboard or file download
- Share (Optional): Generate a shareable link to send your conversion setup to others
Example: Text to Base64
Input Text:
Hello, World!Base64 Output:
SGVsbG8sIFdvcmxkIQ==Frequently Asked Questions
What is Base64 encoding used for?
Base64 encoding is commonly used to encode binary data for transmission over text-based protocols like email and HTTP. It's also used for embedding images in HTML/CSS, API authentication tokens, and storing binary data in databases.
Is my data secure when using this tool?
Yes, absolutely. All encoding and decoding happens entirely in your browser using JavaScript. Your data never leaves your device or gets sent to any server, ensuring complete privacy and security.
What's the difference between regular and URL-safe Base64?
Regular Base64 uses + and / characters, which have special meanings in URLs. URL-safe Base64 replaces these with - and _ respectively, making it safe to use in URLs and filenames without encoding.
Why does Base64 encoding make text longer?
Base64 encoding converts every 3 bytes of input into 4 characters of output, increasing the size by approximately 33%. This overhead is the cost of representing binary data in text format.
Can I encode non-English text?
Yes! This tool supports full UTF-8 encoding, so you can encode text in any language including emojis and special characters. The tool properly handles multi-byte characters.