Decode a Base64 string into editable text, then inspect, copy or save the recovered contents. Follow the exact input and settings below to reproduce this example. Open Base64 Decode Text.
Prepare the source text
Open Base64 Decode Text and choose Write or paste text, or upload a supported UTF-8 text file. The upload opens the editor; it does not run the tool. This example uses the exact source shown in the comparison.
Maximum input and result: 1 MB of UTF-8 text, with a 1,048,576-character input ceiling. Expanding transformations must also fit the result limit.
Use the exact example input
SGVsbG8sIHdvcmxkIQ==
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Check how the tool works
This tool has no extra transformation options to set. Keep the source exactly as shown to compare the result.
The tool first decodes Base64 into bytes, then reads those bytes as UTF-8. Invalid Base64 and byte sequences that are not valid UTF-8 cannot produce a text result. A Base64-encoded image or other binary file is outside the purpose of this text decoder.
The example in this guide
Verified in the i2TEXT browser workflow on November 11, 2026.
- Input
- example.txt
- Output
- base64-decode-text.txt
- Saved result
- 13 bytes
Apply and inspect the result
Select Base64 Decode Text when the input and settings are ready. In the saved example, the result begins: "Hello, world!".
A successful decode is not a security or authenticity check. Review unfamiliar decoded content before using it elsewhere.
Check the decoded text in the monospaced result and compare its UTF-8 byte size with the encoded input in Result overview. Invalid Base64 or decoded bytes that are not valid UTF-8 produce an error instead of a text result.
Result overview distinguishes changed, unchanged and empty results. An unchanged result means the selected operation did not alter the text; an empty result can be the expected outcome of removal or extraction. Open Show spaces and tabs to reveal spaces as ·, tabs as ⇥ and line endings as ↵. These marks are only a preview; copied and downloaded text keeps its actual whitespace. The whitespace preview shows at most 12,000 Unicode code points. This preview limit does not shorten the editable result or its TXT download.
Save the version you reviewed
Review the current result, then use the download icon to save a TXT file. The actual download in this example is named base64-decode-text.txt. Copy and download use the current result, so make any final wording changes before saving. Continue to can carry the result into a compatible next tool, where you review it before running another operation.
Editing the result hides the calculated details until you run the tool again. Copy and TXT download use the edited text; return to the source and reapply the tool to refresh the report.
example.txtbase64-decode-text.txt
Common questions
Which settings produced this example?
No extra transformation settings were required. The source and actual output are shown in the comparison.
What should I check before using the result?
A successful decode is not a security or authenticity check. Review unfamiliar decoded content before using it elsewhere.
Where is this text processed?
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Try Base64 Decode Text with your own text.
Use your own source and review the result before sharing.
