An archive tool that also converts formats

Extract, compress, convert documents to PDF and convert images — four jobs in one app.
Runs offline, so the files you work with never leave your computer.

Windows 10 / 11 (64-bit) · .NET Runtime required · No account needed

Four things it does

The free version is fully functional — no locked formats, no locked encrypted archives, no ads.

Extract

Supports zip, rar, 7z, tar, and compound formats such as tar.gz / tar.bz2 / tar.xz. Formats are detected from file headers, so a renamed archive still opens correctly.

No extra software

Create archives

Pack into ZIP / tar.gz / tar.bz2 / TAR / gz with adjustable compression. Works with multiple files and whole folders, subfolders included.

No extra software

Documents to PDF

Convert Word, Excel, PowerPoint and ODF documents to PDF, or to txt / html / csv and more. Conversion uses the office suite already installed on your PC.

Requires Office or LibreOffice

Image conversion

Convert between PNG, JPG, BMP, GIF and TIFF with adjustable quality and size, and combine several images into one multi-page PDF.

No extra software

Details you will actually use

These are not filler for a feature list — they are situations you really run into.

Extract from the right-click menu

Right-click an archive in File Explorer and extract it with UnZipTool without opening the app first. UnZipTool is also added to the "Open with" list, but never changes what a double-click does.

Scheduled auto-extract

Point it at a folder and it will unpack new archives on the schedule you set — handy for keeping a downloads folder tidy. It runs through Windows Task Scheduler, so it still works when the app is closed.

Off by default — enable it in Settings

Search inside archives, extract only what you need

Search by file name inside an archive with thousands of entries, and double-click to preview a file without extracting anything. Select just the files you want instead of unpacking the whole thing.

Encrypted archives

Opens ZipCrypto and AES-256 encrypted zip files, plus encrypted 7z. Enter the password once and it is reused for the rest of the session.

No more garbled file names

File name encoding (GBK / UTF-8) is detected automatically, so older archives do not unpack into a pile of garbled names — a long-standing problem with many tools.

Dark mode · three interface languages

Light, dark or follow-system themes; Simplified Chinese, Traditional Chinese and English interfaces. Switching takes effect immediately — no restart.

Why it is worth using

These are not slogans but design decisions — and you can verify every one of them yourself.

Your files never leave your computer

The app contains no network code at all. Unplug your network cable and every file operation still works — try it.

No personal data collected

No usage analytics, no crash reports, no reading device information. There are no accounts and nothing to sign up for.

Failures leave no debris

Archives are written to a temporary file and renamed only on success, so cancelling or failing never leaves a corrupt half-written archive.

No options it cannot actually do

Conversion checks what your document type can actually become, so impossible combinations are not offered — instead of letting you click and then fail.

Pricing

The free version can be used indefinitely. Buy the full version only when you need the size limits lifted.

1 day
CNY 0.6
A quick trial for a few archives
1 month
CNY 2
Short projects or occasional use
3 months
CNY 5
Long-term use, better value

Free vs. full version

Item Free Full
FormatsAllAll
Encrypted archivesYesYes
Files per extract / compress200Unlimited
Files per document conversion30Unlimited
Image conversionUnlimitedUnlimited
AdsNoneNone
Network requiredNoneNone
The free version is not crippled.Every format and every capability is open; only the number of files per operation is limited. Everyday archives and small document conversions are barely affected.

Download

The app itself is only 4.1 MB. You need to install the .NET Runtime once before first use.

Step 1 · Install the .NET Runtime
Download and install.NET 8 Desktop Runtime(x64)
Provided by Microsoft. About 55 MB, free, and only needed once.
Step 2 · Download and run UnZipTool
Download the app below (about 4.1 MB), put it in any folder and double-click to run.
UnZipTool itself needs no installation and does not write to the registry — but Requires the runtime from step 1
If a missing .NET message appears, step 1 was skipped or the wrong runtime was installed.You need the Desktop Runtime (Desktop Runtime) — not "ASP.NET Core Runtime" and not ".NET Runtime". After installing the Desktop Runtime, double-click this app.
Windows may warn about an unknown publisher on first run.This happens because the app has no code-signing certificate, which is common for new software. Click "More info" → "Run anyway". If you would rather check first, upload the file to VirusTotal.

FAQ

Document conversion says no engine was found — what now?

This feature needs Microsoft Office or LibreOffice installed on your PC. After installing, click "Detect again" in the app — no restart needed.

The other three features (extract, compress, image conversion) need no extra software.

Does it connect to the internet? Does it upload my files?

No. The app contains no network code and your files stay on your machine. Every file operation works with the network disconnected — you can verify it yourself.

My antivirus flags it — what should I do?

Archive tools read and write many files, which triggers heuristic false positives. Add it to your allow list, or upload the file to VirusTotal to double-check.

Can I use my license on another computer?

The license key is bound to a machine identifier. Replacing the motherboard or reinstalling Windows may change it — contact the issuer to have it reissued. Save your key before deactivating.

How do I buy the full version?

Email the issuer with the plan you want and your machine code (shown in the app's activation window). We will reply with payment details and send your license key.

Email:dabangzi2026@outlook.com

Is macOS or Linux supported?

Windows 10 / 11 (64-bit) only, for now.