Free Document Tools
Browser-based utilities for file integrity, metadata inspection, and fraud awareness. Nothing leaves your device.
Checksum Calculator
Calculate SHA-256 or SHA-512 hash of any file to verify its integrity.
File IntegrityQR Code Generator
Generate a downloadable QR code from any URL or text string.
EncodingImage EXIF Viewer
Upload an image to inspect EXIF metadata: GPS, camera model, timestamps, and software.
MetadataBase64 Encoder / Decoder
Encode files or text to Base64, or decode Base64 back to text — entirely in your browser.
EncodingFile Hash Comparator
Upload two files and compare their SHA-256 hashes to confirm they are identical — or detect changes.
File IntegrityPDF Metadata Extractor
Upload a PDF to extract embedded metadata: author, creator, creation date, and modification date.
MetadataDocument Tamper Checklist
Work through 20 visual signs of document tampering and get an instant risk score.
EducationFile Type Detector
Upload any file to identify its true type from magic bytes — not just the filename extension.
File IntegrityTimestamp Analyzer
Upload a file to display its modification date and compare it against embedded metadata dates.
MetadataFraud Red Flags Guide
Select a document type — passport, invoice, contract — and see the top fraud patterns to watch for.
EducationPDF to Image Converter
Convert each page of a PDF into a high-quality PNG or JPEG image — entirely in your browser.
ConversionPDF Password Protection
Add a password to any PDF to restrict who can open it.
ConversionDOCX to PDF Converter
Upload a Word document and download a formatted PDF in seconds.
ConversionPDF to DOCX Converter
Convert a PDF into an editable Word document while preserving layout and formatting.
ConversionNeed automated forensic analysis?
TamperCheck.ai runs 130+ checks on any document and returns a plain-English verdict in seconds.
Get started with $5 free credits