How to use it
Enter UTF-8 text and choose Encode, or paste a standard Base64 value and choose Decode. For an image, use the upload control to create a data URL. Check the output before copying it into HTML, CSS, configuration, or logs.
Base64 Encoder Help, Examples, and FAQ
Use the Base64 tool to wrap UTF-8 text or image bytes in a text-safe representation, or decode Base64 back to text. Image uploads produce data URLs for small inline assets. Base64 is encoding, not encryption, so anyone with the value can decode the original content.
Worked example
Input
GoTools ✓
Output
R29Ub29scyDinJM=
Useful scenarios
- Convert a tiny SVG or icon into a Data URL for a quick CSS background prototype.
- Decode an API field to confirm whether the actual payload is JSON, text, or a binary marker.
- Encode a short config snippet before placing it in an environment variable that dislikes special characters.
Supported behavior and limits
- Supports UTF-8 text, standard Base64, text decoding, and image-to-data-URL conversion.
- Uses browser TextEncoder, TextDecoder, btoa, atob, and FileReader APIs. URL-safe Base64 normalization is not automatic.
- No fixed file limit is enforced; image conversion keeps the complete data URL in browser memory.
Privacy and data handling
Text and image files are processed in the current browser and are not uploaded to GoTools servers.
Frequently asked questions
- Is Base64 secure? No. It is encoding, not encryption.
- Why does decoded text look broken? The original bytes may not be UTF-8 text, or the string may be truncated or escaped.
- Should every image be Base64? No. Use it for small inline assets; use normal file URLs for larger images.