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What is Base64?
Base64 maps binary data to ASCII text so it can travel through JSON, URLs, and email. It is not encryption—anyone can reverse it—so never rely on it for secrecy.
How to use this tool
Choose encode or decode. Paste input. Copy the result. Use the full tool for batch workflows and larger strings.
Use cases
Embedding small images in data URLs, debugging JWT segments, handling attachment encodings, quick scripting helpers.
Privacy and security
Editor and conversion workflows run in your browser without uploading your content to our servers for those steps. Clear sensitive data when you finish, especially on shared machines.