ALZ to 7Z Converter
Convert ALZ to 7Z online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is an ALZ file?
An ALZ file is a proprietary compressed archive format developed by the South Korean software company ESTsoft, specifically for use with the ALZip utility. Introduced to circumvent the file size limitations of early ZIP specifications, the format allows for archives exceeding 4 GB and supports spanning data across multiple split volumes. While ALZ utilizes the Deflate compression algorithm to reduce storage requirements, it is a closed-source format without an official ISO standard or public documentation. Consequently, the format's internal structure and header signatures are distinct from standard ZIP or TAR archives, limiting its compatibility with non-proprietary decompression libraries.
How to open an ALZ file
Operating systems including Microsoft Windows, macOS, and Linux do not provide native file explorer support for the ALZ extension. Users must install third-party archival software capable of parsing ESTsoft's proprietary compression algorithms. The official ALZip software is the primary tool for creating and extracting these files; however, alternative utilities such as Bandizip and The Unarchiver (macOS) have successfully reverse-engineered read capabilities. Standard compression tools like WinRAR or 7-Zip may require specific plugins or fail to process the ALZ binary headers entirely.
ALZ Technical Info
- Full Name
- ALZip Archive
- Developed By
- ESTsoft
- Initial Release
- 1999
- MIME Type
- application/x-alz
What is a 7z file?
The 7z format is a compressed archive container created by Igor Pavlov in 1999, characterized by an open architecture and high compression ratios utilizing the LZMA and LZMA2 algorithms. It supports file sizes up to 16 exbibytes (2^64 bytes), Unicode file names, and strong AES-256 encryption, with solid compression capabilities to enhance efficiency for similar file sets. Distributed under the GNU LGPL, the format's modular design accommodates various pre-processing filters and encryption methods, establishing it as a primary standard for high-efficiency data archival.
How to open a 7z file
While Windows 11 builds utilizing the libarchive project offer native support, earlier Windows versions require the official open-source 7-Zip utility or alternatives like WinRAR and PeaZip for extraction. macOS users typically rely on third-party software such as The Unarchiver or Keka, whereas Linux distributions handle 7z archives via the p7zip package accessed through the command line or GUI managers like File Roller.
7z Technical Info
- Full Name
- 7z Archive Format
- Developed By
- Igor Pavlov
- Initial Release
- 1999
- MIME Type
- application/x-7z-compressed
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Developer API
Convert ALZ to 7Z via API
Automate ALZ to 7Z conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "alz-to-7z",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "7z"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.alz
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.