File Validator
Inspect file metadata, verify magic bytes against extension, and check image dimensions.
Deep Dive
Validate files against specific requirements before uploading them to government portals or applications. Check file size (KB/MB), dimensions (pixels), and MIME types instantly. The tool alerts you to common security issues and format mismatches. No files are uploaded.
Who uses this?
- Checking passport photos for portal upload compatibility
- Ensuring tax documents are under the 2MB size limit
- Validating signatures for online application forms
- Verifying file extensions match the actual file content
Expert FAQ
Is my document safe?
Yes. The validation is performed entirely using JavaScript in your browser. Your sensitive documents never leave your device.
Does it support PDF validation?
Yes. It checks PDF page counts, file size, and basic integrity to ensure compatibility with portal uploaders.
Can I create custom rules?
Yes. Use the 'Custom' mode to define your own size limits and allowed extensions.
Alternatives
Online File ValidatorCheckFileType.comVirusTotal (for security)