How to open a .0 file online
No extra software to download or install.
Pick your .0 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 .0 files
What a .0 file is, and what's inside it.
A .0 file is the first numbered piece of a larger file that was split into parts so it could fit an upload limit, email attachment cap, or multiple storage drives. You cannot open it alone - collect all the parts (.0, .1, .2...) into one folder and rejoin them using Hacha, HJSplit, or 7-Zip. The original filename before ".0" tells you what kind of file you will get back (e.g., movie.avi.0 rejoins to a video).
Programs that open .0 files
| Full name | Numbered split-archive volume (first part, .0) |
|---|---|
| Developer | No single owner — '.0' is a generic 'first numbered part' suffix; Hacha (Spanish freeware splitter) is one common source |
| First released | Numbered split-part naming predates the web; Hacha released c. 2000 (still maintained, v3.5.0 Oct 2025) |
| Category | Archives |
| MIME type | application/octet-stream |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .0 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 .0 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.
Was this tool helpful?
Your rating helps us decide which tools to improve next.