How To
How to Encode Text or Files to Base64 Online
Convert text strings or binary files to Base64 encoding in your browser. No upload required.
Base64 encoding converts binary data to ASCII text for safe transmission in text-based protocols like JSON, XML, and HTML. FileCraft encodes text and files locally.
Step-by-Step Guide
1
Open FileCraft Base64 Encoder
Go to filecraft.tools/base64-encode.
2
Choose input type
Select "Text" for encoding strings or "File" for encoding binary files (images, PDFs, etc.).
3
Enter your data
Paste text or drop a file.
4
Copy the Base64 output
The Base64 string is generated instantly. Copy it for use in your application.
Try it now — free, no account, no upload
Open Base64 Encode →Pro Tips
- 💡Base64 output is approximately 33% larger than the input — this is normal
- 💡For large files, use Base64 only when required by the API — binary transfer is more efficient
Frequently Asked Questions
What is Base64 used for?
Embedding images in CSS/HTML (data URLs), sending binary data in JSON APIs, storing binary data in text databases, and encoding email attachments (MIME).