Base64 to CSV
Paste a Base64 string and get the original CSV back — with a table preview and one-click .csv download.
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Decode Base64 into a CSV file
Spreadsheets ferried through JSON payloads or signed URLs usually arrive as Base64. This tool decodes the string back into the original CSV, renders a quick table preview so you can sanity-check the rows, and gives you a one-click download as .csv.
Going the other way? CSV to Base64 handles the encode direction.