OverlayCheck
100% in-browser OSINT, image forensics & privacy suite
2 followers
100% in-browser OSINT, image forensics & privacy suite
2 followers
Free, client-side OSINT & forensics workbench. Audit image tampering (ELA), scrub EXIF & Office metadata, inspect steganography bit planes, test WebRTC IP leaks & canvas fingerprinting. 100% in-browser, zero cloud uploads, no signup required.
This is the 2nd launch from OverlayCheck. View more
OverlayCheck
Launched this week
🕵️♂️Meet OverlayCheck: The Zero-Knowledge In-Browser OSINT & Forensics Workbench
Most online forensic utilities, metadata scrubbers, and file converters have a dirty secret: they upload your sensitive files, unredacted documents, and private photos directly to their remote servers.
For investigative journalists, security analysts, incident responders, and privacy-conscious users, uploading evidence or confidential documents to an unknown cloud server is a non-starter.
OverlayCheck changes that.
Free
Launch Team
Render Sandboxes: a computer for every agentRun untrusted code safely. Idle sandboxes cost nothing
Promoted
Hey Product Hunt! 👋
I'm Rutvij, Security Analyst and creator of OverlayCheck.
OverlayCheck originally started as a small, simple utility to preview social media cards and overlays. But as I spent more time working in digital forensics and defensive security, I kept running into a glaring, frustrating reality:
Almost every online tool for digital image forensics—whether checking Error Level Analysis (ELA), scrubbing EXIF data, or analyzing metadata—requires you to upload your files to a third-party server.
If you are a security researcher analyzing suspicious attachments, an investigative journalist handling sensitive leak documents, a privacy advocate removing location data from personal photos, or a CTF competitor inspecting stego challenges, uploading your files to an unverified cloud server completely breaks your chain of custody and compromises your privacy.
I decided to fundamentally pivot and rebuild OverlayCheck into what it is today: an authoritative, 100% in-browser digital forensics and privacy suite.
Here’s our technical commitment:
Zero-Cloud Execution: Everything runs locally in your browser via WebAssembly, Web Workers, Canvas 2D, WebGL, and Web Crypto. Your files never leave your device. You can verify this by checking your browser's Network tab—there are zero file upload requests.
Comprehensive Coverage: We now feature 17 specialized tools spanning EXIF scrubbing, ELA, steganography LSB slicing, PNG chunk repairs, PDF/Office metadata sanitization, and browser fingerprint/WebRTC leak auditing.
Completely Free & Accessible: No accounts, no subscriptions, no credit cards, and no artificial daily limits.
I would love for the PH community to put our tools through their paces!
Try running a photo through the EXIF Scrubber or ELA inspector, test your browser against the Fingerprint Analyzer, or test your damaged PNG files with the IHDR Chunk Fixer.
What other forensic, OSINT, or privacy tools would you like to see built directly into your browser? I’ll be here all day to chat, answer technical questions, and take notes on your feedback! 🚀
🚀 Major Update: We just overhauled OverlayCheck with 17 client-side forensics modules & an interactive sandbox!
Hey everyone! Since our initial launch, we’ve been listening closely to feedback from the privacy and security communities. Today, we just pushed a major release across the entire suite—and uploaded a brand new 30-second motion walkthrough video to the gallery above! 🎬
Here is what’s new in today’s deployment:
⚡ 1. Interactive In-Memory Sandbox
You can now test our EXIF pruner, Error Level Analysis (ELA), and steganography carver right from the homepage using built-in sample files—without even uploading an image.
🎯 2. Dual-Audience Workflow Switcher
One-click toggle between dedicated tool views:
• OSINT & Forensics: For investigators, journalists, and CTF players.
• Privacy Advocates: For everyday users stripping location telemetry and tracker URLs.
🔍 3. Error Level Analysis (ELA) with Live Inspection Loupe
Spot photoshopped documents, forged invoices, and spliced numbers using client-side OffscreenCanvas 2D JPEG quantization deltas.
🗺️ 4. Lossless EXIF Pruner with GPS Sonar Radar
Strip binary APP1/APP13 metadata and geotags with 0% recompression or image quality loss.
🛡️ 5. Auditable Zero-Telemetry Matrix
Don’t take our word for zero server uploads. We published a full 17-tool runtime data-flow matrix with step-by-step instructions on how to press F12 (DevTools) and verify 0 outbound network requests yourself.
📊 6. Comparison Hubs
Detailed technical comparisons showing how OverlayCheck contrasts with FotoForensics, cloud scrubbers, Smallpdf, and AperiSolve.
Everything remains 100% free, client-side, and open source.
👉 Try the live sandbox: https://overlaycheck.com
I’d love to know what you think of the new video and what forensic or privacy utility we should add next! Drop your thoughts below. 👇