Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 to text
How to Use Base64 Encoder/Decoder
1 Encode Text
- โข Select "Encode" mode
- โข Type or paste your text into the input box
- โข Click "Encode to Base64"
- โข Copy the Base64-encoded result
2 Decode Base64
- โข Select "Decode" mode
- โข Paste your Base64 string into the input box
- โข Click "Decode from Base64"
- โข View the decoded text result
Common Base64 Use Cases
Data URIs
Embed images and files directly in HTML and CSS using base64 data URIs to reduce HTTP requests.
API Authentication
Encode credentials and tokens for Basic Authentication headers in API requests.
Email Attachments
Email systems use Base64 encoding to send binary attachments as text in MIME messages.
Data Storage
Store binary data as text in databases or JSON files when binary storage is not available.
Web Development
Encode serialized data, configuration files, and small assets for web applications.
Token Encoding
JWT tokens and various API keys are base64-encoded for safe transmission over text protocols.
Frequently Asked Questions
What is Base64 encoding?
Base64 is an encoding method that converts binary data into ASCII text using 64 printable characters. It is commonly used to transmit data over text-based protocols like HTTP and SMTP.
Is Base64 encryption?
No, Base64 is encoding, not encryption. It does not provide any security. Data encoded in Base64 can be easily decoded by anyone. Always use proper encryption for sensitive data.
Does Base64 increase file size?
Yes, Base64 encoding increases data size by approximately 33%. This is because it encodes 3 bytes of binary data into 4 ASCII characters.
When should I use Base64 encoding?
Use Base64 when you need to transmit binary data through text-only channels like JSON APIs, email, or HTML data URIs. It is ideal for small to medium-sized data.
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