Steps
- Open the Base64 Encoder.
- Paste text to encode — or Base64 to decode.
- Click Encode/Decode and copy the result.
Example
Helloencodes to
SGVsbG8=Where devs use it
- Embedding small images in HTML/CSS
- JWT tokens and API keys
- Email attachments (MIME)
Related tools
- Base64 Encoder — encode and decode.
- JWT Decoder — inspect tokens.
- Hash Generator — one-way fingerprints.
Frequently Asked Questions
What is Base64?
A way to represent binary data (images, files) as plain ASCII text so it can travel safely in URLs, JSON and emails.
How do I encode to Base64?
Paste text in the free Base64 Encoder, click Encode, copy the output. Decoding works the same in reverse.
Is Base64 encryption?
No. It is encoding, not encryption — anyone can decode it. Never use it to hide passwords.
Why is my Base64 so long?
Base64 inflates size by ~33%. That is normal — it trades size for text-safety.
Is my data uploaded?
No. Encoding runs in your browser — your data never leaves your device.