Base64 Encoder Tool
Convert text or files to Base64 format. Generate Data URIs and decode Base64 strings.
Input
How to Use
1
Select Text or File
Enter text or drag & drop a file.
2
Encode or Decode
Click "Encode" to convert to Base64, or "Decode" to revert.
3
Copy Result
Copy to clipboard with the copy button.
About Base64
Base64 is an encoding scheme that represents binary data in text format. It is used for email attachments, Data URIs, and binary data transmission in APIs.
Features
- Text & File SupportConvert not only text but also images and PDFs to Base64.
- Data URI GenerationOutput images as Data URIs for direct embedding in HTML or CSS.
- URL Safe OptionGenerate URL-safe Base64 by replacing + and / with - and _.
- Privacy ProtectedAll processing happens in your browser. Files are never sent to servers.
Use Cases
- Embed images directly in HTML (Data URI)
- Send binary data via APIs
- Encode email attachments
- Decode JWT tokens for inspection
- Embed images in CSS
FAQ
Is the Base64 converter free?
Yes, it is completely free. No registration required.
What file size can it handle?
Within browser memory limits, usually up to several MBs.
Does Base64 increase file size?
Yes, Base64 encoded data is about 1.33 times larger than the original.
Are my files safe?
All processing happens locally in your browser. Files are never sent to our servers.
What is a Data URI?
A format starting with "data:" that allows embedding data directly in HTML or CSS.