Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to text instantly.
About Base64 Encode & Decode Online
Encode text or files to Base64 or decode Base64 strings back to plaintext. Works in-browser with no data upload. This page is part of UtilsNest's Developer Tools, so you can move between related workflows without leaving the browser.
How to use it
- Enter or adjust the values, text, or file input needed for Base64 Encode & Decode Online.
- Review the generated result instantly and compare outputs until the result fits your use case.
- Copy, download, or continue to a related developer tools workflow if you need the next step.
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Open Developer ToolsFrequently Asked Questions
What is Base64 encoding used for?
Base64 is used to encode binary data (images, files) as ASCII text for safe transmission in emails, APIs, and HTML data URIs.
How is Base64 different from encryption?
Base64 is not encryption — it is just encoding. Anyone can decode a Base64 string without a key. Do not use it to protect sensitive data.
Can I encode images to Base64?
Yes. Upload an image file and the tool will generate a data URI Base64 string you can embed directly in HTML or CSS.