What is Base64 Encoder/Decoder?
Base64 turns binary data into plain-text characters you can safely paste into emails, URLs, config files, and more. Drop in text or an image and get the Base64 output instantly — or paste Base64 and decode it back. Everything runs in your browser, so nothing gets uploaded. Handy for API debugging, embedding images in CSS, or figuring out what a Base64 string actually says.
Use Cases
- ◆Sending binary data through text-only APIs
- ◆Embedding images directly in HTML or CSS
- ◆Encoding email attachments the MIME way
- ◆Storing small files inside config files
- ◆Passing data safely through URL parameters
How to Use
- 1Pick encode or decode
- 2Paste your text or drop an image
- 3Watch the result appear instantly
- 4Hit copy — done
Features
- ✓Free
- ✓No account needed
- ✓Runs in your browser
- ✓One-click copy
- ✓Instant conversion
- ✓Text and images
- ✓Nothing uploaded
- ✓Works everywhere
FAQ
Is Base64 encryption?
No — it is encoding, not encryption. Anyone can decode a Base64 string. If you need actual security, use HTTPS or encrypt the data first.
Why does the output look bigger?
Base64 inflates the size by about 33% because every 3 bytes become 4 characters. That is the trade-off for making binary safe to transmit as text.
Does my data go anywhere?
Nope. Everything happens in your browser. Nothing is uploaded.
What operations does this tool support?
This tool supports various operations related to its specific domain. All processing uses modern web APIs for optimal performance.
What are the input limitations?
Input limitations depend on the specific operation. Most tools handle typical use cases instantly with no noticeable delays.
Is my data uploaded to a server?
No. All processing happens locally in your browser using JavaScript APIs. Your data never leaves your device, ensuring complete privacy.