How to open a .A00 file online
No extra software to download or install.
Pick your .A00 file
Drag it in or click to choose it. We read its contents list first, so it opens right away without unpacking everything.
Browse what's inside
See every file with its size, how much it's compressed and its date, and search by name across all the folders.
Preview or download
Click a file to preview text or images, or save just that one. Need everything? Download it all as a single ZIP.
About .A00 files
What a .A00 file is, and what's inside it.
An .a00 file is the second volume of a multi-part ARJ compressed archive. The first volume carries the .arj extension; .a00 comes next, then .a01, .a02, and so on. You cannot extract it alone - put all parts in one folder and open the .arj file with 7-Zip or WinRAR, which will pull in the remaining volumes automatically.
Programs that open .A00 files
| Full name | ARJ Multi-Volume Archive — Part 2 (.a00) |
|---|---|
| Developer | ARJ Software, Inc. (Robert Jung) |
| First released | 1990 (ARJ 1.0 by Robert Jung) |
| Category | Archives |
| MIME type | application/octet-stream |
| Signature | 60 EA |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .A00 file?
No. The viewer reads its table of contents first and only unpacks a file when you click it. That works even with multi-gigabyte archives, because we read just the bytes we need.
Can I open password-protected archives?
Yes, for ZIP (ZipCrypto and AES) and 7Z. You'll be asked for the password,. We can't recover forgotten passwords.
Is my .A00 file uploaded anywhere?
No. The code that unpacks the file is downloaded once and then reused.
Why does a .docx or .apk open as an archive?
Because they are ZIP archives under the hood. Office documents, Android apps, Java programs and EPUB books all use ZIP as their container.
What about split archives (.001, .z01, .part1.rar)?
Multi-part archives need all their parts. Today you can open the first part to see the file list; joining parts is on our roadmap.
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