Paste Base64 and press Decode to file to download the original bytes. Files are read locally, never uploaded.
Frequently asked questions
Is my data uploaded?
No. DevTidy runs entirely in your browser. Your input is processed on your device in a background Web Worker and never sent to a server, so it is safe for API keys, customer data and production configs.
Can it handle large files?
Yes. Heavy work runs in a Web Worker so the page stays responsive, and there is no upload size limit. Multi-megabyte inputs are fine; the practical limit is your device memory.
How much bigger is Base64?
Base64 output is about 33% larger than the original file, which is why it suits small images and icons best.