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TDE (.tde)

.tde file signature | application/octet-stream

Tableau Data Extract (TDE) is a compressed data extract file format developed and maintained by Tableau Software for use with Tableau products. It is used to store structured data for analytics, reporting, and offline querying in workbooks, dashboards, and data preparation workflows. TDE is a legacy format that has largely been replaced by the Hyper extract format; it is generally safe, though extracts should still be trusted only from reliable sources.

Safe

Magic Bytes

Offset 0
20 02 01 62 A0 1E AB 07

Sources: Wikipedia

All Known Signatures

2 signature variants are documented for .tde files across multiple sources.

Hex Signature Offset Sources
20 02 01 62 A0 1E AB 07 0 Wikipedia
02 00 00 00 0 Wikipedia

Extension

.tde

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .tde files in Python

Python 
def is_tde(file_path: str) -> bool:
    """Check if file is a valid TDE by magic bytes."""
    signature = bytes([0x20, 0x02, 0x01, 0x62, 0xA0, 0x1E, 0xAB, 0x07])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .tde files in Node.js

Node.js 
function isTDE(buffer: Buffer): boolean {
  const signature = Buffer.from([0x20, 0x02, 0x01, 0x62, 0xA0, 0x1E, 0xAB, 0x07]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .tde files in Go

Go 
func IsTDE(data []byte) bool {
    signature := []byte{0x20, 0x02, 0x01, 0x62, 0xA0, 0x1E, 0xAB, 0x07}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/tde
curl https://filesignature.org/api/v1/tde

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .tde file?

A .tde file is identified by the magic bytes 20 02 01 62 A0 1E AB 07 at byte offset 0. Tableau Data Extract (TDE) is a compressed data extract file format developed and maintained by Tableau Software for use with Tableau products. It is used to store structured data for analytics, reporting, and offline querying in workbooks, dashboards, and data preparation workflows. TDE is a legacy format that has largely been replaced by the Hyper extract format; it is generally safe, though extracts should still be trusted only from reliable sources.

What are the magic bytes for .tde files?

The magic bytes for TDE files are 20 02 01 62 A0 1E AB 07 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .tde file?

To validate a .tde file, read the first bytes of the file and compare them against the known magic bytes (20 02 01 62 A0 1E AB 07) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .tde files?

There is no officially registered MIME type for .tde files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .tde files?

TDE (.tde) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.