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Decode Base64

Decodes Base64 text back into a new binary file and rejects malformed input.

Illustration · Change the representation

At a glance

Input
Select local .b64 or .txt files containing Base64 text.
Selection
At least 1 item
Result
Decodes Base64 text back into a new binary file and rejects malformed input. Source files stay unchanged.
Before it runs
You see the options and a preview first.
Pack
File Tools · Included in every installation

How it works

  1. Select local .b64 or .txt files containing Base64 text.
  2. Press Alt + Space and type “Decode Base64”.
  3. A .b64 input restores the embedded filename extension; a .txt input produces a .bin file.
  4. Start the action and check the result.

A practical example

Restore a file that was previously encoded as Base64.

All actions in File Tools →
Encode as Base64Encodes each file as Base64 text in a new .b64 file; Base64 is not encryption.Add to ZIPCreates a new ZIP containing the existing archive entries plus the additional selection.Create Checksum FileSaves SHA-256 or SHA-512 checksums in a new checksum file to help detect later changes.CompareCreates an HTML report comparing two text files line by line so differences are easier to inspect.Copy File NamesCopies the selected filenames to the clipboard so they can be pasted into a list.Copy PathsCopies the selected paths to the clipboard for use in another application.