How to use this tool
Use the interface above to process your input. Everything runs locally in your browser.
FAQ
What is Base64 used for?
Base64 represents binary data (images/files/tokens) as plain text. It is encoding, not encryption.
Is Base64 secure?
No. Base64 is reversible. For secrets, use proper encryption (e.g. AES) instead of Base64.
Why does decoded output look broken?
Your input may be invalid Base64, or the decoded bytes may not be UTF-8 text (it might be an image/file).