About Encode Base64
Use the Base64 encoder online when a text payload needs an ASCII-compatible representation. It can encode Unicode text to Base64 by first converting it to UTF-8 bytes. Base64 is an encoding, not encryption or a way to hide confidential content.
How to encode text as Base64
- Paste the text you want to encode.
- Select Process to encode its UTF-8 bytes.
- Copy the Base64 result or download encoded-base64.txt.
A practical example
- Input
Hello
- Result
SGVsbG8=
The equals sign is standard Base64 padding. Ordinary Base64 can also contain + and / characters.
Supported input and limitations
- Only text input up to 5 MB is supported. Binary file and image-to-data-URL encoding are not included.
- Output uses standard Base64, not the URL-safe alphabet. Encoding usually increases the byte count rather than compressing it.
Processing happens on your device. Read about local processing and optional workspace recovery.
Frequently asked questions
Is Base64 encoding secure encryption?
No. Anyone can decode it without a secret key. Do not treat a Base64-encoded password, token, or message as protected.
Can I encode emoji and non-English text?
Yes. The encoder converts the input to UTF-8 bytes before applying Base64, allowing Unicode characters to be represented.