Base64 to Image
Decode a Base64 string or data URI back into a downloadable image file. Sniffs JPEG/PNG/WebP when the MIME type is missing.
How to use this tool
Paste Base64
Raw Base64 or a full data:image/...;base64,... URI works.
Decode
atob rebuilds the binary Blob in this tab.
Download
Preview and save the reconstructed image.
Frequently Asked Questions
More on quality loss: conversion quality guides · compression guides
Is this tool free?
Yes. Format Convertly tools run free in your browser with no signup required.
Do you store my files?
No. Processing stays on your device — there is no tool upload to our servers.
Does it work on mobile?
Yes. Use any modern phone, tablet, or desktop browser.
Need a format conversion instead?
Open the converters catalog for JPG, PNG, PDF, MP4, and hundreds of other pairs.
Does compressing or converting images reduce quality?
Lossy compression can. Use higher quality settings when fidelity matters, and keep an original master. Lossless workflows preserve pixels.
Can you recover quality after compressing?
Not from the compressed file alone. Keep the original upload/export and recompress from that master if you need a better result.
What is generational loss?
Quality damage from repeatedly re-encoding lossy images. Avoid save→compress→save loops; work from a master.
Ready to convert more formats?
Browse converters or jump back to the tool above.