Corrupt a 7z Archive Online
Corrupt a 7z archive online for free. Destroys the signature header and packed stream index so 7-Zip cannot list or extract the contents.
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7z dosyanızı bozun
.7z için ayarlandı ve diğer tüm biçimlerde de aynı şekilde çalışır.
7z dosyalarını düzgün bozmak neden zordur
7z keeps its metadata in a compressed header at the end of the file, with a small signature header at the start pointing to it. That indirection makes 7z particularly brittle once either end is damaged, and particularly reliable to break.
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- The signature header. The
7z\xBC\xAF\x27\x1Cmarker and the offset it carries to the end header are destroyed. - The end header. The compressed metadata block listing every file, folder and coder is overwritten.
- The packed stream index. The structure mapping compressed streams to their contents is destroyed.
- Compressed payload. Entropy is scattered through the LZMA streams so nothing is recoverable by carving.
Sonrasında ne göreceksiniz
| Uygulama | Davranış |
|---|---|
| 7-Zip | "Cannot open the file as archive" or an unexpected end-of-data error. |
| PeaZip / Keka | Reports an unsupported or damaged archive. |
7z l | Fails with "Headers Error" and a non-zero exit code. |
| Windows Explorer | No preview and no extraction option beyond a generic error. |
Bunu yapmanın yaygın nedenleri
- Testing an extraction service against malformed archives.
- Verifying a software distribution pipeline validates its packages.
- Simulating a partially downloaded archive for a retry-logic test.
- Checking that unpacking failures are reported rather than silently skipped.
7z dosyası nasıl bozulur
- .7z dosyanızı yukarıdaki kutuya bırakın veya seçmek için tıklayın.
- Kısmi hasar (Light) istemiyorsanız ya da kurtarma yazılımını alt etmeniz (Heavy) gerekmiyorsa seviyeyi Standard bırakın.
- Dosyayı boz düğmesine basın. İşlem cihazınızda yapılır, bu yüzden neredeyse anında biter.
- Sonucu indirin. Varsayılan olarak özgün dosya adını ve bayt uzunluğunu korur.
7z hakkında sık sorulanlar
Why is 7z easy to break?
Because it stores its file listing in a compressed header at the end and reaches it through an offset at the start. Damage either and the archive has no map of itself.
Does 7-Zip have a repair mode?
Not a real one. Unlike RAR it has no recovery records, so a damaged 7z is generally unrecoverable, which is why this tool is so effective on it.
Are encrypted 7z archives supported?
Yes. Encryption protects the contents, but the signature and end headers we target sit outside it.
Will the archive size change?
Not by default. The output is byte-for-byte the same length as the original.