Image to Base64 Converter

Encode an image as a Base64 data URI to embed it directly in HTML, CSS, JSON or email templates.

FreeNo sign-upRuns in your browserMobile-friendly

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What does the Image to Base64 Converter do?

A data URI puts the image’s bytes, encoded as text, straight into your code: data:image/png;base64,iVBORw0…. This removes a separate file request, which can help for tiny icons, and makes self-contained HTML files possible.

The file is read exactly as it is (not re-encoded), so quality is unchanged. Base64 makes data about 33% larger, so it suits small images only. The tool shows the overhead and warns for images over 100 KB.

How to use the Image to Base64 Converter

  1. Choose an image.
  2. Pick the output format: data URI, raw Base64, HTML tag or CSS background.
  3. Copy the code or download it as a text file.

Examples

Inline icon

A 1.2 KB SVG or PNG icon embedded in CSS as background-image avoids an extra HTTP request.

Common use cases

  • Embedding small icons in CSS
  • Creating single-file HTML documents
  • Including images in JSON APIs
  • Email templates (support varies)

Features and benefits

  • Private by design — your data is processed on your device and never uploaded.
  • Free with no account, no watermark and no usage limits.
  • Works on phones, tablets and desktops in any modern browser.

Limitations to know

  • Some email clients block data-URI images.
  • Large Base64 strings slow down HTML and CSS parsing.

Helpful guides

Frequently asked questions

Why is Base64 bigger than the file?

Base64 represents every 3 bytes with 4 text characters, adding about 33%.

Is the image re-compressed?

No, the original file bytes are encoded unchanged.

Can I convert it back?

Yes, with the Base64 to Image tool.

Embed this tool on your website

Add the free Image to Base64 Converter to your blog or website. Paste the code into your page’s HTML; the tool runs in your visitors’ browsers and stays up to date automatically. Please keep the credit line below the tool.

Free to use on any website. The tool runs inside an iframe served from viptools.pk; nothing your visitors type is sent to your site or ours. Preview the embedded version.

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