Base64 to Image Converter
Paste a Base64 string or data URI and render it back into a downloadable image, entirely inside your browser.
What is Base64-to-image decoding?
A Base64 string is a text representation of an image's raw bytes. Decoding reverses that encoding — the text is converted back into actual image data and rendered as a preview, which can then be saved as a normal image file.
If the pasted text doesn't already include a data:<mime-type>;base64, prefix, selecting the correct image type reconstructs one so the browser knows how to render it.
GuideHow to use it
Features & benefits
Why this runs entirely in your browser
Images and Base64 data handled here can be personal photos or unreleased design assets, so nothing is uploaded to a server. Everything is processed locally in the tab using the browser's own file reading and image rendering, which means it keeps working offline once the page has loaded.
A note on Base64 image size
Base64 encoding increases the size of the data by roughly a third compared to the original binary file, since every three raw bytes become four text characters. That trade-off is worth it for small icons embedded inline, but for larger images a normal image file with a proper URL is usually the better choice for page load performance.
Frequently asked questions
A few things people usually want to know before trusting the numbers.
Select the correct image type from the dropdown — it's used to reconstruct a data URI so the browser can render a preview.
The pasted text isn't valid Base64, or doesn't decode into a real image for the selected (or detected) image type. Double-check nothing was cut off when copying it.
Yes. Once a valid preview renders, use the Download image button to save it as a file.
Yes — switch to the Image to Base64 tab, or use the dedicated Image to Base64 Converter page.
No. All decoding happens locally in your browser. Nothing pasted here is sent to a server, stored, or shared.