Scan Core

Scan a file locally

Drop a file into the scan area or choose one. Analysis runs in your browser and does not send the file to a server.

Files stay in your browserNo uploadNo executionClient-side analysisClean copies with reduced riskNot a replacement for antivirus

Local in your browser

This file is checked with File API, ArrayBuffer, and client-side scanners. There is no upload route for file processing, and files are never executed.

Drop file here

Save it. Do not open it. Scan first.

Maximum 50 MB. Large files can take longer.

Security principles

The app does not upload files, execute files, open links, or render original files unsafely. Parser errors are treated as warnings.

Limits

ScanBeforeOpen does not replace professional antivirus or a malware VM. It analyzes known risk patterns locally in the browser.

No false promises

The result deliberately says no obvious risks found, not safe, when no known pattern is detected.

Supported MVP file types

PDF

DOCX/XLSX/PPTX

CSV

ZIP

JPG/PNG/WebP/GIF

SVG/HTML/XML

TXT/MD/JSON/LOG