Base64 Encoder/Decoder Online - Free Base64 encoder and decoder with batch support.
Free online Base64 encoder and decoder. Encode or decode Base64 strings instantly with batch support, all in your browser.
How to Use Base64 Encoder/Decoder
- 1Choose "Encode" or "Decode" mode.
- 2Paste your text or Base64 string.
- 3Click the action button and copy the result.
Frequently Asked Questions
What is Base64 encoding?
Base64 encoding converts binary or text data into an ASCII string format using a set of 64 characters (A-Z, a-z, 0-9, +, /). It is commonly used to embed data in URLs, HTML, and CSS.
Is Base64 encoding secure?
No. Base64 is an encoding scheme, not encryption. It does not protect data — anyone can decode it. Use encryption for security, not Base64.
Can I encode multiple strings at once?
Yes. This tool supports batch encoding — enter one string per line and encode them all in one click.
Found a bug or have a suggestion? Report it on GitHub