🏷️ File Extension Fixer
It detects the TRUE format of files with deleted, misspelled, or corrupted extensions in emails by analyzing the file signature (magic byte): PDF, UDF, DOCX, XLSX, PPTX, PNG, JPEG, TIFF, RTF, and more.
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ℹ️ Server-side tool: 1.000⚡ energy is consumed per operation (3 attempts per day without input). Outputs are permanently deleted after 1 hour — privacy is paramount.
Frequently Asked Questions
Why does a file appearing as ZIP output DOCX?
DOCX, XLSX, PPTX and UDF are actually ZIP containers; the tool distinguishes the true type by looking inside the archive.
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Detailed information about File Extension Fixer
It detects the TRUE format of files with deleted, misspelled, or corrupted extensions in emails by analyzing the file signature (magic byte): PDF, UDF, DOCX, XLSX, PPTX, PNG, JPEG, TIFF, RTF, and more. The file content REMAINS UNCHANGED — you only download a copy renamed with the correct extension.