ZenovayTools

Image to Base64

Convert images to Base64 encoded strings. Get data URIs, CSS backgrounds, and HTML img tags ready to use.

Drop your image here

Supports PNG, JPEG, WebP, SVG, GIF — up to 10 MB

How to Use Image to Base64

  1. 1Upload or drag and drop an image file.
  2. 2The image is encoded to a Base64 string instantly in your browser.
  3. 3Copy the data URI, CSS background snippet, or HTML img tag.
  4. 4Paste the encoded string directly into your code.
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Frequently Asked Questions

What is Base64 encoding for images?▾
Base64 is a way to represent binary data (like images) as ASCII text. This lets you embed images directly in HTML, CSS, or JSON without needing a separate image file.
When should I use Base64 images?▾
Base64 is great for small icons, logos, and thumbnails that you want to inline in HTML or CSS. It eliminates an extra HTTP request. Avoid it for large images as it increases file size by ~33%.
Is my image uploaded to a server?▾
No. The conversion happens entirely in your browser using the FileReader API. Your image never leaves your device.
What output formats are available?▾
You get the raw Base64 string, a data URI (for img src), a CSS background-image snippet, and an HTML img tag — all ready to copy and use.
How much larger is a Base64-encoded image?▾
Base64 encoding increases file size by approximately 33%. A 100 KB image becomes about 133 KB in Base64. This is why it is best used for small images like icons and logos.
Does this work on mobile devices?▾
Yes. The Base64 encoder runs entirely in your browser using the FileReader API and works on any device with a modern browser.
Can I convert multiple images at once?▾
Currently the tool processes one image at a time. Upload each image separately to get its Base64 encoding.