Base64 Encoder

What is Base64 Encoder?

Base64 Encoder is a free online tool that converts text and files into Base64 format. It transforms your data into a string of letters and numbers that can be safely transmitted or stored as text.

Why Would You Need to Encode Base64?

Base64 encoding is essential for many tasks:

• Embed images in HTML: Include images directly in web pages as data URLs
• Send binary data: Transfer files through text-only systems
• API requests: Send images and files in JSON payloads
• Email attachments: Encode files for email transmission

How to Encode Base64 - Step by Step

1. Add your content: Enter text or upload a file to encode
2. Click Encode: Press the button to convert to Base64
3. Copy the result: Use the encoded string in your application

Key Features

• Text and file support: Encode both text and binary files
• Data URL generation: Creates ready-to-use data URLs for images
• URL-safe option: Generate URL-compatible Base64 strings
• One-click copy: Easy button to copy encoded result

Tips for Best Results

• Base64 increases data size by about 33 percent
• Use data URLs for small images only to avoid large HTML files
• Consider compression before encoding large files

Frequently Asked Questions

How much larger is Base64?

Base64 encoded data is about 33 percent larger than the original. A 100KB file becomes about 133KB when encoded.

Can I encode any file type?

Yes, Base64 works with any binary data including images, documents, audio, and video files.

Is Base64 encoding secure?

No, Base64 is not encryption. It just changes the format. Anyone can easily decode Base64 text. Use proper encryption for sensitive data.