Base64 Encoder
Encode text and files into Base64 instantly. Convert UTF-8 content, copy encoded output and download results directly from your browser.
Encode to Base64
Convert text or file content into Base64
Text Input
Paste, type, upload or drop content
Base64 Output
Encoded Base64 result
Waiting
Ready to Encode
Enter text or upload a file, then click Encode Base64.
Input Size
0 B
Output Size
0 B
Characters
0 B
Expansion
0%
Browser-Based Base64 Encoding
This implementation encodes text and file content directly in your browser with JavaScript. Encoding, copying and size calculations do not require your content to be sent to a server.
Encoder Features
Encode Base64 in Seconds
Convert text and file content into Base64 with fast browser-based processing.
Instant Encoding
Convert UTF-8 text into Base64 with one click.
File Support
Upload a file and encode its binary content into Base64.
UTF-8 Safe
Correctly encode Unicode text, symbols and multilingual content.
Copy & Download
Copy Base64 output or save it as a text file.
Three Simple Steps
How to Encode Base64 Online
Enter Content
Paste or type text into the editor, upload a file or drag and drop content.
Encode Base64
Click Encode Base64 to validate the input and remove unnecessary formatting.
Copy or Download
Review the encoded output, copy it to the clipboard or download a text file.
Base64 Encoding Guide
What Is a Base64 Encoder?
A Base64 Encoder converts text or binary data into an ASCII text representation using the Base64 encoding scheme. It is commonly used when data must travel through systems designed primarily for text.
Base64 output uses letters, numbers and a small set of symbols. Encoding is reversible, but it is not encryption and should not be treated as a security mechanism.
Base64 Encoding Example
Plain text:
Hello WorldBase64 output:
SGVsbG8gV29ybGQ=Why Use Base64 Encoding?
Base64 is useful when binary or special-character data needs to be represented as plain text. Common examples include email attachments, data URLs, API payloads and embedded resources.
Base64 usually increases data size because binary information is represented with text characters. It is intended for compatibility and transport, not compression.
How Does Base64 Encoding Work?
Base64 processes input bytes and maps groups of bits to a 64-character alphabet. Padding characters may be added at the end when the input byte length does not align with complete encoding groups.
This page uses UTF-8 conversion for text so Unicode characters can be encoded correctly. Uploaded files are read as binary data before Base64 conversion.
Base64 Encoding vs Encryption
Base64 encoding is not encryption. Anyone with a Base64 decoder can reverse encoded content. Do not use Base64 alone to protect passwords, secrets or confidential information.
Encryption is designed to protect data using cryptographic keys. Base64 is designed to represent data in a text-friendly form.
Common Uses for Base64 Encoding
API Payloads
Represent data as text inside compatible request and response formats.
Data URLs
Embed small resources directly in text-based documents and styles.
Email Content
Represent attachment data in text-oriented message transport.
Developer Workflows
Encode test values, tokens and binary content for compatible systems.
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Base64 Encoder FAQs
Encode to Base64 Now
Paste text or upload a file and generate Base64 encoded output in seconds.
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