How to convert an image to Base64
- Choose an image file from your device.
- Click Convert to Base64.
- Copy the generated data URL or download it as a text file.
- Paste it into a project that accepts a data URL, such as an HTML
srcattribute or a CSSurl().
What is a Base64 image data URL?
A data URL stores the image's encoded data together with its media type. It can be useful for small icons, prototypes and self-contained examples. Base64 is an encoding format, not encryption, so it does not make an image secret.
Privacy and file limits
This converter uses your browser's FileReader API. The selected image is not sent to a Tolvix server or a third-party conversion service. Files larger than 5 MB and non-image files are rejected to keep the tool manageable. Do not assume that encoding a file protects confidential content.
Frequently asked questions
Does this upload my image?
No. The conversion happens locally in your browser. The website still loads its normal analytics script for site measurement.
Why is the Base64 result bigger than my image?
Base64 represents binary data using text characters, so the encoded output is typically around one-third larger than the original binary file, before any additional markup.
Can I convert any file?
No. This tool accepts image files only and has a 5 MB size limit.
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