Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back into readable text with quick copy and sample actions.
Input text
Paste text, then choose Encode or Decode.
Output
Use Copy Output after a successful conversion.
Base64 conversion
How to use
Follow these simple steps to use the tool.
Paste plain text when you want to encode, or paste Base64 when you want to decode it.
Use Encode to convert text into Base64. Use Decode to turn valid Base64 back into readable text.
Check the result, review the status message, and copy the output when it looks right.
What it does
See what this free online tool can help with.
Encodes plain text into Base64.
Decodes valid Base64 into readable UTF-8 text.
Shows clear feedback when the input does not match the action you selected.
Conversions run in your browser, so no upload is required.
Supported formats and limits
Review supported inputs, outputs, and practical limits for this tool.
Formats and options
- Plain text input
- Base64 text input
- UTF-8 text output
- Modern desktop and mobile browsers
Things to know
- This tool focuses on text input and output, not file conversion.
- Decode expects valid Base64 that resolves into UTF-8 text.
- Very large text blocks may feel slower on older devices because conversion happens in the browser.
FAQ
Answers to common questions about this tool.
Does this work with normal text and not just code snippets?
Yes. You can encode or decode any normal UTF-8 text that fits in the text box.
Can this decode invalid Base64 anyway?
No. If the input is not valid Base64 text for decoding, the tool shows an error instead of guessing.
Does Bukmrk upload my text anywhere?
No. The conversion happens in your browser, so your text stays on your device.
Why use a free online Base64 tool?
Base64 conversion is useful when you are debugging payloads, working with APIs, or moving text through systems that expect encoded data.
This Bukmrk tool focuses on the simple common use case: quick text encoding and decoding without installing anything. Paste text, convert it, copy the result, and move on.