Repair your 7Z Online

Do you have an archive/7Z file that will not open correctly? If so, our free-to-use 7Z repair tool may be able to help. Our tool analyses the content of your 7Z file and is able to determine if the compressed file content is valid. Our tool will let you know what is wrong with your 7Z file and attempt to fix it.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your 7Z, once uploaded to our server, will be deleted 15 minutes after upload.
If our tool offers the option to repair your file, please ensure you download the repaired file within this time period.

How to Repair your 7Z Online?

Here are 3 simple steps to repair your 7Z using our fast and free repair tool.

Upload your 7Z

Click the "Select File" button, then select a 7Z file. The maximum file size is 100MB.

Analysis and Repair

Your 7Z file will be analysed, and our tool will attempt to repair your 7Z file if possible.

Repair or Convert your 7Z

Select an option to either repair or convert to receive your repaired 7Z file.

Frequently Asked Questions

Is it free to use the 7Z file repair tool?

Yes! Our 7Z repair tool is 100% free to use.

Are there any usage limits when repairing my 7Z file?

No, you can repair as many files as you wish. We do not have any limits when using our 7Z repair tool.

How long does it take to repair my 7Z?

We aim to process 7Z repairs as quickly as possible; this usually takes around 5 seconds; however, this may be longer depending on the file size and data needed to be repaired.

What does the 7Z repair process involve?

Once your 7Z has been selected, it will undergo some initial checks to verify that the file has some basic information. If the initial checks pass, we then upload the file to our servers for more detailed analysis.

Is it safe to repair my 7Z on FabConvert.com?

Yes, of course it is! Your 7Z, once repaired, is deleted 15 minutes after upload, and any download link will expire after this time.

Can I repair my 7Z on Windows, Linux, Android, iOS or Mac OS?

Yes! Our 7Z repair tool will run on any system with a modern web browser.

7Z file format information

Extension7Z
Full Name7z Archive
TypeArchive
Mime Typeapplication/x-7z-compressed
FormatBinary

A file with the 7Z extension is a compressed archive. It was created by Igor Pavlov in the late 1990s with the intention of making it easy to allow many files to be grouped together and compressed into a single, easy-to-distribute archive.

Along with individual files, the 7Z format allows multiple files and whole directory structures to be compressed and packed into a single container format. The compression algorithm used enables high compression ratios without any data loss.

To open 7Z files, there are several archive processing applications available. Some examples, such as 7-Zip and WinRAR, are able to open 7Z files.

Repairing a 7Z File

7Z File Header Data

7Z file types aim to provide a highly compressible container in which to place other files with the aim to reduce storage space used or to conveniently distribute many files. The format for 7Z archive file types is binary and, as such, contains a rigidly defined set of sequential bytes to identify the file type, regardless of what the filename extension may be.

Compression Algorithms

Our 7Z repair tools can read several archive formats and algorithms; this is necessary to retrieve potentially damaged data from an archive file. If the 7Z file does need to be repaired, the actual compression algorithm will not be altered; only the data contained within will be changed.

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