File Hash & Virus Scanner
Check files for malware by generating cryptographic hashes locally. 100% Privacy — your files never leave your computer.
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(Max recommended size: 100 MB)
Reading File & Computing Hashes...
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filename.exe
0 MB application/x-msdownloadCryptographic Signatures
Deep Malware Scan
Click the button below to check this file's SHA-256 signature against 70+ premium antivirus engines (Kaspersky, BitDefender, McAfee, etc.) via VirusTotal's global database.
Check on VirusTotalHow Does a Zero-Upload Virus Scanner Work?
Traditional online virus scanners require you to upload your sensitive files, documents, or software executables to their remote servers. This consumes massive bandwidth and puts your intellectual property at risk of data breaches. The OnlinePaste File Hash Scanner solves this using a zero-trust cryptographic architecture.
100% Client-Side Processing
When you drop a file into this tool, your browser's internal engine reads the raw binary data. It calculates a unique mathematical fingerprint (SHA-256 Hash) of the file using JavaScript. Your file is never uploaded to the internet, keeping your privacy completely intact.
Global Threat Intelligence
Every known virus or malware has a unique SHA-256 fingerprint already recorded by cybersecurity firms. By passing the fingerprint generated by your browser to VirusTotal's database, you can instantly see if top-tier antivirus engines (like Windows Defender, Malwarebytes, or Avast) have flagged the file as dangerous.