A way to embed an image directly inside text — HTML, CSS or JSON — as a long Base64 string prefixed with its type, like data:image/png;base64,iVBOR… Instead of linking to a separate file, the picture travels inside the document itself.

When should I embed an image as Base64?

For small images: icons, logos in email signatures and HTML emails, tiny placeholders, and single-file demos. Base64 inflates size by about a third, so big photos belong in real files — embedding a 2 MB photo makes a ~2.7 MB string that slows everything down.

Is my image uploaded to a server?

No. Your browser reads the file you picked and encodes it on your device. Nothing is transmitted — you can prove it by loading this page and switching to airplane mode.

What is the difference between the two outputs?

The data URI includes the type prefix (data:image/png;base64,) so browsers know what the string is — that is the version you paste into HTML or CSS. The raw Base64 is just the encoded bytes, for APIs and code that add the prefix themselves.

Image to Base64 Converter

Turn any image into a Base64 string or a ready-to-paste data URI — encoded on your device, never uploaded.

Private by design: this tool runs entirely in your browser. Your files are never uploaded to a server, and nothing is stored.

Tap to choose an image — or drop it here

PNG, JPG, WebP, GIF, SVG — any image your browser can open

How to use it

Choose an image. Any format your browser opens — PNG, JPG, WebP, GIF, SVG and more.

Read the two outputs. The data URI for HTML/CSS, the raw Base64 for code and APIs; the label shows sizes before and after encoding.

Copy and paste. Drop the string where you need it — no file to host, nothing uploaded.

One file instead of two

Embedding small images as data URIs removes a whole class of annoyances: no separate file to upload, no broken link when a folder moves, no extra request slowing a page. It is the standard trick behind self-contained HTML emails, embedded report logos, offline demos and icon sprites in a single stylesheet. The trade-off is size — Base64 costs about 33% more bytes than the binary — which is why this tool shows you both sizes up front, so the decision is yours and informed.

Image to Base64 Converter

How to use it

One file instead of two

Related tools