Recommended
Windows installer
The usual setup experience for your own Windows PC.
- Download the setup file from the official release.
- Close NativePrep if it’s already running, then open the installer.
- Follow the setup steps, then launch NativePrep.
Getting started · 1.0.5-beta.3
A few steps. Then you’re in.
Choose how you want to run NativePrep, open a sample, and start exploring. Your data work stays on your computer by default.
Windows x64Free early betaNo account requiredEngine included
Choose your download
Portable ZIP
Run from an extracted folder without installing the app.
- Download the ZIP and extract the entire archive into a writable folder, such as Downloads\NativePrep.
- Open the extracted folder and run
local-prep-studio.exe. - Keep the
binariesfolder beside the app. Don’t run it inside the ZIP.
This is an unsigned early beta. Windows may show a SmartScreen prompt on first launch. Read setup questions below if you see a warning.
Your first flow
- 01
Open a sample
Start with a built-in sample pipeline or copies of your own files. Keep your originals while evaluating the beta.
- 02
Run and review
Run the pipeline, inspect the data preview, and export the result. Check the output before using it in your work.
- 03
Save your flow
Save your project to reuse the steps next time. Keep project backups alongside your original datasets.
Setup questions
A little more detail, only when you need it.
Windows or my browser shows a security warning
New unsigned apps can have insufficient publisher or download reputation. A generic unfamiliar-app warning alone does not establish malware, but it does not guarantee safety either.
Download only through NativePrep.com or the official GitHub release. After checking the source and release file, if you choose to proceed with the standard Windows SmartScreen prompt, select More info → Run anyway.
Do not disable antivirus, SmartScreen, or your organization’s protections. If antivirus names a specific threat, stop and report the detection name and app version, without private datasets. The portable ZIP also contains unsigned executables; it is not a warning bypass.
Microsoft’s SmartScreen guidanceHow do I verify a download?
The official release includes SHA256SUMS.txt. In PowerShell, check your downloaded file with:
Get-FileHash -Algorithm SHA256 "path-to-your-download"Compare the result to the matching filename in the release checksums. A match confirms you have the published release file, not that the software is safe.
Do I need to install anything else?
Windows x64 is required. The processing engine is bundled: you don’t need Python, Node.js, or Rust.
The desktop shell needs Microsoft WebView2 Runtime. An unmanaged Windows machine may need it installed before NativePrep can launch. Use Microsoft’s official WebView2 download, or ask your IT administrator on a managed device.
How do updates work? What if a file is locked?
Updates are manual: download a later beta and close the current app before updating.
If setup reports a locked DLL, cancel setup, close NativePrep and its processing engine, then retry. Don’t skip a required file. Keep project and dataset backups before updating.
What are the beta limits?
The import cap is 1 GiB per file. CSV and Excel imports can require substantially more memory than their file size. macOS and Linux downloads are not available yet.
Installation, upgrade, and uninstall on a separate clean Windows machine have not yet been verified. Start with samples or copies, and check your exported results.
Something not working?
Include your app and Windows versions, steps to reproduce, and expected vs. actual results. Help → Export Diagnostic Logs creates a ZIP—review it before sharing. Never attach private datasets, API keys, or license keys.