Every file we publish has a SHA-256 checksum: a string of 64 characters calculated from its content. If the file you downloaded gives exactly the same checksum as the one published here, it is bit for bit the file we put online. If it gives a different one, don't open it.
The calculation is done entirely on your device, in your browser. The file is not sent, copied or transmitted to KDL TECH or to anyone else.
Drag the downloaded file here, or click to choose it.
A matching checksum proves that the file was not modified or corrupted between our server and your computer: an incomplete download, a failing drive, or a file replaced along the way.
It does not replace a code signing certificate. A signature is a guarantee issued by a third party, attesting to the publisher's identity; a checksum only compares two files. Both are useful, but they don't answer the same question.
If you'd rather not trust a web page with this, your system can do it on its own. Open a terminal in the file's folder, replace NOM_DU_FICHIER with the actual name, and compare the result with the published checksum.
certutil -hashfile NOM_DU_FICHIER SHA256
sha256sum NOM_DU_FICHIER
shasum -a 256 NOM_DU_FICHIER
Run the command. It shows 64 characters (digits and letters from a to f).
Open our official list: SHA256SUMS.txt, and find the line for the file you downloaded.
The two strings must be strictly identical, character for character. Case doesn't matter, everything else does: a single different character means the file is not the right one.
If there's a difference, delete the file and download it again. If the mismatch persists, write to us before opening it.
Our Windows installers are currently distributed without a code signing certificate. Windows SmartScreen may therefore show a warning on first launch, and Smart App Control may refuse to open the file on the most recent Windows 11 installations.
This message doesn't flag a problem detected in the file: it flags a lack of reputation. A new program, distributed by a small publisher, has none until it has been downloaded a large number of times.
We will never ask you to disable SmartScreen, Defender or any Windows protection, and we don't try to bypass these screens. What we give you instead is a way to check for yourself: the file comes from kdl-tech.fr over HTTPS, and its SHA-256 checksum is published above. A signing certificate will be added as soon as possible.