Developer Tool
Base64 Encode/Decode
Encode or decode Base64 strings for testing, debugging, integrations, and quick data checks.
Tool Area
Everything runs in the browser.
Use this Base64 encoder and decoder when you need to inspect an encoded value, create a quick test string, or sanity-check a payload without opening a terminal. It is built for text snippets used in everyday debugging, documentation, API testing, and support workflows.
- Base64 is encoding, not encryption; do not treat decoded values as secure.
- Avoid pasting real secrets, credentials, or private customer data into browser tools.
- If decode fails, check for missing padding, line breaks, or copied whitespace.
How to use
- Paste plain text or a Base64 string into the input field.
- Choose encode or decode mode depending on the direction you need.
- Copy the result and verify it before using it in code or documentation.
Common use cases
- Inspect encoded API payloads, basic auth examples, or config snippets.
- Generate quick Base64 strings for documentation, tests, or support notes.
- Decode pasted values during debugging without switching to a terminal.
FAQ
Does it support binary files?
No. This version is designed for text content pasted into the browser, not file uploads.
Is Base64 secure?
No. Base64 only changes the representation of data. Anyone can decode it if they have the string.
What happens with invalid Base64 input?
The tool returns an error instead of a decoded result so you can catch invalid input immediately.