Base64 Encoder/Decoder
Encode any text string or binary content to Base64 format, or decode Base64 strings back to their original readable content — entirely in your browser. Base64 encoding is essential for developers working with APIs, data URIs, email attachments, JWT tokens, authentication headers, and binary-to-text transmission. It converts binary data into a safe ASCII character set that can be embedded in JSON, URLs, HTML, and other text-based formats without corruption. Our encoder/decoder handles both standard Base64 and URL-safe Base64 variants.
Output appears here...How to Use Base64 Encoder/Decoder
- 1Paste your plain text or Base64 string into the input area
- 2Click "Encode" to convert plain text to Base64 format
- 3Or click "Decode" to convert a Base64 string back to plain text
- 4View the result instantly in the output field
- 5Click "Copy" to copy the encoded or decoded result to your clipboard
About Base64 Encoder/Decoder
Encode any text string or binary content to Base64 format, or decode Base64 strings back to their original readable content — entirely in your browser. Base64 encoding is essential for developers working with APIs, data URIs, email attachments, JWT tokens, authentication headers, and binary-to-text transmission. It converts binary data into a safe ASCII character set that can be embedded in JSON, URLs, HTML, and other text-based formats without corruption. Our encoder/decoder handles both standard Base64 and URL-safe Base64 variants.
Your Privacy is Protected
Base64 Encoder/Decoder runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
Frequently Asked Questions
What is Base64 encoding?
Base64 is an encoding scheme that converts binary data into a safe ASCII string using 64 characters (A-Z, a-z, 0-9, +, /). It allows binary content to be safely transmitted through text-based protocols like HTTP, JSON, and email.
When should I use Base64 encoding?
Use Base64 when embedding binary data in JSON or XML, transmitting images or files in API requests, creating data URIs for inline CSS/HTML images, encoding credentials for HTTP Basic Authentication, or working with JWT tokens.
Is Base64 the same as encryption?
No. Base64 is encoding, not encryption. It does not protect data from being read — anyone can decode a Base64 string. For security, you need actual encryption algorithms like AES.
What is URL-safe Base64?
Standard Base64 uses + and / characters which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _, making it safe to use in URLs and query parameters without additional percent-encoding.
Why Use This Tool?
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