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.
Is this tool free?
Yes — completely free. No accounts, no paywalls. Just open the page and go.
Does my data get sent to a server?
No. Everything runs in your browser. Your data never leaves your device.
Does it work on my phone?
Absolutely. Works great on phones, tablets, and desktops alike.