All free flowsBase64 Message to Readable Text
Decode a standard Base64 UTF-8 message, clean its whitespace and download a readable TXT copy with the decoded intermediate retained.
Source and processing remain in this browser; no upload/account is required. Base64 is encoding, not encryption. The encoded original and decoded intermediate may contain the same sensitive content as the final reading copy.
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About this flow
Paste standard padded Base64 or choose a UTF-8 TXT copy. Decode it strictly as UTF-8, then select explicit whitespace cleanup. Download the readable copy, original encoded input and unchanged decoded intermediate. Message content is not sorted, deduplicated or redacted.
Limitations
- One text input, at most 1,048,576 UTF-16 units and 4 MiB. Standard alphabet and complete padding required; ASCII spaces/tabs/CR/LF accepted.
- Invalid alphabet, padding, padding bits or decoded UTF-8 reject. MIME/email containers, data-URL prefixes, Base64url and arbitrary binary files are unsupported.
- Cleanup intentionally normalizes whitespace; bounded synchronous decoding cannot be interrupted mid-call.
- Native other-browser/physical-device behavior, hidden heap reclamation and forensic erasure remain unproven.
