Helpful Toolbox

Image to Base64

Drop in an image and get a ready-to-paste Base64 data URI, CSS snippet, and <img> tag — all encoded right here in your browser.

📖 How it works & FAQ

What is a Base64 image?

Base64 encoding turns the raw binary bytes of an image into plain text made of letters, numbers, and a few symbols. When you wrap that text in a data: URI, the whole picture lives inside a single string you can paste directly into your HTML or CSS. The browser decodes it back into pixels — no separate image file and no extra network request needed.

When to use an inline data URI

Embedding an image as Base64 is handy for tiny icons, email templates, single-file HTML pages, or anything that must travel without external assets. It removes an HTTP round-trip, which can speed up small images. The trade-off: Base64 makes the data roughly 33% larger than the original file, and inlined images are not cached separately, so it is best kept for small graphics rather than large photos.

How to use it

  1. Click the file picker and choose any image — PNG, JPG, GIF, SVG, WebP, or ICO.
  2. Your image appears as a preview along with its original and encoded size.
  3. Copy the full Base64 data URI to paste anywhere a URL is accepted.
  4. Or grab the ready-made CSS background snippet or <img> tag with one click.

FAQ

Is my image uploaded anywhere?
No. The file is read locally with your browser's FileReader and never leaves your device. Everything happens in-page, so it works offline too.
Why is the Base64 string bigger than my file?
Base64 represents 3 bytes of data with 4 text characters, adding about 33% in size. That is normal and expected for the encoding.
What image formats are supported?
Anything your browser can read as an image — including PNG, JPEG, GIF, SVG, WebP, BMP, and ICO. The data URI keeps the correct MIME type automatically.
Can I use the output in an email?
The <img> tag works in many contexts, but note some email clients (notably Outlook) block or strip Base64 images, so test before sending.