Picsova

Image to Base64

Convert an image to a Base64 data URI for inline use in CSS, HTML, or JSON. Decode Base64 back into a downloadable image too. Runs locally.

Runs entirely in your browser. Nothing is uploaded.

Encode images as data URIs

A Base64 data URI turns an image into a string of text you can paste directly into a stylesheet, an HTML attribute, a JSON payload, or an email template. That removes one network request and keeps a small asset travelling with the code that uses it. This converter builds the data URI in the page, which matters when the image is a private asset, and it also runs in reverse to turn a Base64 string back into a downloadable file.

How to convert an image to Base64

  1. 1

    Drop in an image

    Add a JPG, PNG, WebP, SVG, or GIF file and it is read locally by your browser.

  2. 2

    Copy the data URI

    Take the complete `data:` string, ready to paste into CSS, an img tag, or a JSON field.

  3. 3

    Or decode instead

    Paste an existing Base64 string in the other direction to get the image file back.

Good to know

  • Base64 encoding adds roughly 33% to the byte size, so it is a win for small assets like icons and a loss for large photographs.
  • The output includes the correct MIME type prefix, so it works as-is in `background-image` and `src` attributes.
  • Inlined images cannot be cached separately from the file that contains them — keep that in mind for anything reused across pages.
  • Encoding is local, so a private logo or signature image is never transmitted.

What people use it for

  • Inlining a small icon or logo in CSS to remove an HTTP request
  • Embedding an image in a JSON payload or an API request body
  • Putting a signature or header graphic directly into an HTML email template

Frequently asked questions

What is a Base64 data URI used for?+

It lets you embed an image directly in HTML, CSS, or JSON without a separate file request: handy for small icons, email templates, and inline SVGs.

Can I decode Base64 back to an image?+

Yes. Switch to the Base64 → Image tab, paste a data URI, preview it, and download the decoded file.

Should I Base64-encode large images?+

Generally no: Base64 adds about 33% to the size and isn't cached separately. It's best for small, frequently-used graphics.

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