Image to Base64 Encoder
Convert an image to Base64 or a data URI online. Instantly copy or download the result — encoded locally in your browser, nothing is uploaded.
How to use
Four steps from image file to reusable encoded data.
- UploadDrop an image into the upload box or browse your device.
- Generate Base64The data URI appears instantly — encoded locally.
- Copy or downloadCopy the raw Base64 or full data URI, or save a .txt file.
- Use the encoded dataPaste the full data URI into an HTML attribute — `<img src="data:image/png;base64,…" alt="Example image">` — or a CSS `url("data:image/png;base64,…")`. Swap in your own MIME type and payload so both match the output above.
- Every step runs locally in your browser.
Key Features
Encoding happens entirely in your browser — nothing is uploaded.
- Data URI supportGet the full data:image/…;base64, URI ready to paste.
- Copy to clipboardOne click copies the raw payload or the full URI.
- Processed on your deviceEncoding happens in the browser — nothing is uploaded.
- Image metadataFile name, size, dimensions and MIME type at a glance.
Frequently asked questions
Base64 represents binary image data as plain text so it can travel inside HTML, CSS or JSON — commonly as a data:image/…;base64, URI.
No. Encoding happens in your browser with FileReader; the image never leaves your device.
Yes — copy just the raw payload or the complete data URI, whichever your destination expects. A .txt download is also available.
Yes — Base64 represents every 3 bytes as 4 characters, so the text output is roughly 33% larger than the file. That is expected.
JPEG/JPG, PNG, WebP, AVIF, BMP, GIF and SVG. The output is the file's exact bytes as text — no re-encoding, no quality change.