Decode Base64 to a file

No. The conversion runs entirely in your browser. The file never leaves your device – there is no server that could see it. Once the page has loaded, the tool even works offline.

A text file containing Base64 – with or without line breaks, with or without the trailing “=” padding, in the standard or the URL-safe alphabet – or a complete data URL such as “data:image/png;base64,…”. Save the text as a .txt file and drop it here.

We look at the decoded bytes, not at the label: a PNG signature gives you a .png, a PDF a .pdf, a font a .ttf or .woff2, readable UTF-8 a .txt. Unknown binary content is saved as .bin so you can rename it yourself.

The text contains characters outside A–Z, a–z, 0–9, + and / (or - and _). Common causes: surrounding quotes, a “data:” prefix without “;base64”, or a copy that stopped halfway. Copy the string again in full.