Conversion instructions below
How to convert DOS to ZIP file?
Here are the steps to convert DOS to ZIP archive using ezyZip.
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Select files to convert To select the DOS file, you have two options:
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Click "Select DOS file to convert" to open the file chooser
- Drag and drop the DOS file directly onto ezyZip
Click "Select DOS file to convert" to open the file chooser
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Convert your fileClick "Convert to ZIP". It will start the conversion process which will take some time to complete.
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Save the converted fileClick on "Save ZIP File" to save the converted ZIP file to your selected destination folder.
More how-to guides
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Click the Dropbox iconClick on the Dropbox logo () in the DOS file selector button.
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Authorise and pick filesThe Dropbox file chooser will appear. You will need to authorise access to ezyZip the first time.
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Files appear in the listingOnce you have selected the DOS file, it will download it to your browser and initiate the conversion.
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Save back to DropboxTo save the converted ZIP file to Dropbox, click on "Dropbox" dropdown under the "Save ZIP File" button. This will require authorisation the first time you run it.
The file will be stored in /Apps/ezyZip folder.
Frequently asked questions
ezyZip is an online tool that supports any OS that can run a modern browser. We have tested it to work with Windows, MacOS, Linux (e.g. Ubuntu, Mint, Debian), Android, ChromeOS (Chromebook), iOS (iPhone, iPad & iPod Touch).
We are continuously updating the system, so ensure you are using the latest version of one of the popular browsers or their variants. (e.g. Chrome, Firefox, Safari, Opera).
Please let us know via the feedback form if you have any issues.
We are continuously updating the system, so ensure you are using the latest version of one of the popular browsers or their variants. (e.g. Chrome, Firefox, Safari, Opera).
Please let us know via the feedback form if you have any issues.
Yes. ezyZip utilises the processing power of your own computer and browser to complete the task. No file data leaves your browser. Unsure? Turn off your WiFi when completing the uncompression. It will continue to work as no data is uploaded to the internet.
ezyZip is a free online DOS to ZIP converter that runs in your browser. No need to install any additional converter software. It supports a myriad of other file conversion options too.
Unlike other online archive conversion utilities, ezyZip does not require uploading files to a server. Use it as many times as you want, completely free. It runs locally as a browser app, thus making it much quicker than other online conversion tools. This also ensures your privacy will be protected as no file data will leave your browser.
DOS-era archive files are compressed archives created by the many archiving tools that were popular in the 1980s and 1990s, during the days of DOS and bulletin board systems, before the ZIP format won out. Dozens of competing archivers appeared during those years, each with its own compression method and file layout, and many can no longer be opened by modern archive tools. This tool automatically detects the format and extracts a wide range of them, including the mainstream archivers PKZIP (ZIP), ARC, ARJ, LHA, LZH, ZOO, RAR, ACE, PAK and LArc, plus many rare and obscure ones such as PC-Shrink, ChiefLZ (LZA and LZZ), HPACK, AMG, CP Shrink, ARX, UHARC, LIMIT, Squeeze It (SQZ), Hyper, QuARK, Zet, JRchive, BOA Constrictor, DWC, HAP, ChArc, ARQ, CMZ and ARG.
Just select a DOS-era archive and this tool identifies the format and extracts its files, so you can recover old data without tracking down the original DOS software.
Just select a DOS-era archive and this tool identifies the format and extracts its files, so you can recover old data without tracking down the original DOS software.
ezyZip processes files directly in your browser. Unlike most online tools, your files are not uploaded to our servers, which means faster processing and better privacy. Take a look at the feature comparison below and we think youll agree that ezyZip is the better choice for your file conversion needs.
| Feature | ezyZip | Other Online Tools |
|---|---|---|
| No Software Installation | Works Directly in Browser | Works Directly in Browser |
| Processing Location | Your Browser (No Upload) | Their Servers (Upload Required) |
| Privacy & Security | 100% Private (Files Never Leave Your Device) | Files Uploaded, Accessible by Others |
| Processing Speed | Fast (No Upload/Download Time) | Slow (Upload + Process + Download) |
| Registration Required | Never | Often Required for Large Files |
| Works Offline | Yes (After Page Load) | No |
| Supported Formats | 130+ Archive Formats | Limited Format Support |
| Cost | 100% Free | Free with Limitations / Paid Tiers |
| Established | Since 2009 (15+ Years) | Recent (May Disappear) |
Why client-side DOS to ZIP conversion is faster and more private
ezyZip converts DOS to ZIP entirely within your browser's WebAssembly runtime. Here is why local conversion outperforms server-based converters:
- Optimal Engine RoutingThe system automatically selects the best decompression and compression engine for each format combination. For large archives, streaming conversion stages data through the Origin Private File System to avoid memory exhaustion while maintaining throughput.
- No Double TransferServer-based converters require uploading the source archive and downloading the converted result — local processing eliminates this double-transfer overhead. For a 1 GB archive on a typical connection, this saves 30+ minutes of transfer time alone.
- Single-Pass TranscodingDecompression and re-encoding happen in a single pipeline within WASM, avoiding intermediate temporary files. The input format is decoded and the output format is encoded in one continuous pass, minimizing disk writes and processing time.