Free Online Image & Base64 Converter
Convert images to Base64 and Base64 back to images in one click. 100% in-browser, no data uploaded.
Key Features
Image to Base64
Upload or drop an image to instantly get a data URI, ready to embed in HTML/CSS or store in a database.
Base64 to Image
Paste a Base64 string to restore it into an image, with preview and original-file download.
Instant Conversion
Switch direction or paste content and it processes automatically β no repeated clicks.
100% Local
All conversions run in your browser; images never leave your device.
How to Use
Choose Direction
Click Encode to turn an image into Base64, or Decode to turn Base64 back into an image.
Upload or Paste
In image mode, drop a file; in Base64 mode, paste the string into the input box. Results appear in real time.
Copy or Download
Copy the Base64 result in one click, or download the restored image file.
Frequently Asked Questions
What is converting an image to Base64 used for?
It is commonly used to embed images directly in HTML/CSS, store them in JSON or databases, or cache small images locally in the frontend without extra requests.
How much larger does Base64 make the data?
Base64 encoding inflates the data by about 33%. For large images, it is recommended to compress first before encoding.
Is my data uploaded to a server?
No. All conversions happen locally in your browser; images and Base64 strings never leave your device.
Which image formats are supported?
Any format the browser can display, including JPG, PNG, GIF, WebP, SVG, and ICO.