Base64 Encoder/Decoder
Encode and decode Base64 strings quickly and easily. Base64 is a binary-to-text encoding scheme commonly used to transmit binary data over text-based protocols.
Useful for encoding images, files, or any binary data into ASCII strings for APIs, URLs, or data URIs.
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Common Use Cases
Data URIs for Images
Embed small images directly in HTML/CSS using Base64-encoded data URIs, reducing HTTP requests.
API Authentication
Encode credentials for HTTP Basic Authentication headers in REST APIs.
Email Attachments
Encode binary files for MIME email attachments or multipart form data.
JSON Payloads
Safely transmit binary data within JSON objects that only support text.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It uses 64 characters (A-Z, a-z, 0-9, +, /) to represent data, making it safe to transmit through text-based protocols like HTTP, email, or JSON.
Is Base64 encryption?
No! Base64 is not encryption — it's encoding. Anyone can decode Base64 without a key. It's designed for data transmission, not security. Never use Base64 alone to protect sensitive data.
Is this tool safe? Does it store my data?
Yes, it's completely safe. All encoding and decoding happens on the server without storing any data. No logs are kept. Your input is processed and immediately discarded after returning the result.