What this tool does
It handles standard Base64, URL-safe Base64, Data URLs, text payloads, and raw file bytes in one browser-only workspace.
Base64 Toolkit
Work with standard Base64, URL-safe Base64, Data URLs, and file bytes directly in your browser. Nothing is uploaded, nothing touches server memory, and the conversion stays on the page.
Encode turns plain text into Base64. Decode turns Base64 back into readable UTF-8 text.
Standard Base64 uses +, /, and optional = padding.
Choose a file to generate Base64 from its raw bytes.
Why it is private
Your text and files are encoded or decoded locally in the browser and never sent to the server or stored in server memory.
What it is useful for
- Working with APIs or tools that expect standard or URL-safe Base64.
- Encoding local files into Base64 or Data URLs without uploading them.
- Decoding Base64 or Data URL payloads back into downloadable files.
- Inspecting Base64 strings you receive from other systems.
Important note
Base64 is encoding, not encryption. Anyone can reverse it, so it should not be used to protect secrets by itself. Data URLs are just another packaging format around the same idea.