Contact Engineering & Support
Have technical questions about our 17 forensic modules, feature requests, CTF challenge feedback, or research inquiries? We're here to assist.
Direct Support Channel
For all technical communications—including bug reports, tool proposals, CTF suggestions, and research correspondence—reach us directly at:
Inquiries We Support
We actively review and support feedback across all operational suites:
- •OSINT & Forensics: ELA recompression tuning, EXIF tags, bit-plane carving.
- •CTF & Steganography: PNG IHDR bruteforce issues, pixel XOR math, magic bytes.
- •AppSec & Defensive: SVG XSS detection, decompression bombs, QR restorer.
- •Privacy & Media: PDF metadata scrubbing, HEIC/WebP conversion, target file size compression.
- •Forensic Knowledge Hub: Inquiries regarding briefings by Rutvij Khatri.
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Frequently Asked Questions
Are my images or payload bytes uploaded to any remote server?
No. Every one of our 12 forensic tools operates 100% locally inside your web browser using HTML5 Canvas, Web Workers, TypedArrays, and Web Crypto. Your images, GPS coordinates, carved files, and secret keys never leave your machine.
What tools are included across the platform?
OverlayCheck provides 12 specialized tools divided into two suites: (1) Image OSINT & Verification Suite (EXIF Scrubber, Error Level Analysis, Stego Bit Slicer, File Carver, Visual Filters, Reverse OSINT) and (2) CTF & Pentesting Suite (PNG IHDR CRC32 Bruteforcer, Pixel Math XOR, Magic Byte Doctor, Security Auditor, Pixel Flood DoS Auditor, Forensic QR Restorer).
Which image formats are supported?
Depending on the tool, we support JPEG/JPG, PNG, WebP, GIF, BMP, TIFF, Apple HEIC, SVG vector files, and binary container polyglots.
Can I test the tools without uploading my own evidence?
Yes! Every single tool includes a 'Load Demo Sample' button that synthesizes realistic in-memory test files (spliced invoices, CTF flags, corrupted headers, damaged QR codes, and decompression bomb headers) instantly.
Can OverlayCheck be used for commercial, journalistic, or CTF competitions?
Yes. OverlayCheck is completely free for individual researchers, incident response teams, journalistic organizations, and academic CTF competitors.
Who conducts the technical research and writes the briefings?
All 36 in-depth guides in the Forensic Knowledge Hub are authored by Rutvij Khatri and published under OverlayCheck Research.