Is Base64 secure?
No. Base64 is reversible encoding, not encryption.
Decode Base64 text back into readable Unicode text without uploading it to a server.
Decode a JWT payload and header locally so you can inspect token claims.
Encode guideGuideRepair common JSON syntax errors such as trailing commas, comments, single quotes, missing quotes and unmatched brackets.
JSON guideGuideClean up JSON returned by ChatGPT or other AI tools when the response includes markdown fences, comments or invalid syntax.
AI guideGuideRemove trailing commas from JSON objects and arrays so strict JSON parsers can read the data.
JSON guideGuideConvert Unix seconds or milliseconds into readable local and UTC date strings.
Time guideGuideConvert a readable date into Unix seconds and milliseconds for APIs, databases and logs.
Time guideGuideNo. Base64 is reversible encoding, not encryption.
Yes, but this browser tool is optimized for text output.
Yes. The same tool supports encode and decode.