Common use cases
- API debugging
- Read encoded values found in payloads or headers.
- Token inspection
- Understand encoded token segments.
- Configuration examples
- Prepare encoded sample values for docs or tests.
Text · free tool
Base64 encoder and decoder for text, APIs and tokens
Encode text to Base64 and decode Base64 back to readable text.
Your tool
Base64 Encoder / Decoder
Use it well
How to use Base64 Encoder / Decoder
Steps
- Paste text or Base64.
- Edit either side of the converter.
- Check the decoded readable value.
- Copy the encoded or decoded output.
Limits and good practices
Good practices
- Use realistic test values when validating forms, exports or API payloads.
- Keep real customer, banking and production secrets out of public tools.
- Check the output format before copying it into a production workflow.
- Document whether a value is generated, validated, converted or only estimated.
Common mistakes
- Confusing valid format with real-world validity
- A generated or locally validated value can match a format without proving that it exists in an official system.
- Using real production data
- Public utilities are best for test data, demos, fixtures, QA and quick checks, not for confidential values.
FAQ
Frequently asked questions
Is Base64 encryption?
No. Base64 is reversible encoding and does not protect sensitive data.
Why is Base64 used?
It helps transport data through systems that expect plain text characters.
Can Base64 contain secrets?
Yes, but it does not hide them. Treat decoded sensitive values carefully.
Are my inputs sent to a server?
OnSubmit tools run in the browser whenever the task can be processed locally. Avoid pasting production secrets, real banking details or personal data into public tools.