— Image forensics · calibrated verdicts
Forensic-grade AI image detection.
A detector fine-tuned for current generators scores your image and returns a verdict at a capped false-positive rate: 5% for triage, 1% for evidence. Thresholds are calibrated per condition, and every limit is stated on the report itself.
No human sees your image · removed after the report · verified chain of custody
387,072
scored evaluations
64,512
benchmark test images
8
real-world conditions
6
detectors on the calibration grid
— How it works
Three steps between an image and a defensible answer
01 · Hash
Fingerprinted in your browser
Chain of custody is enforced by hashing. Your browser computes the SHA-256 of the exact bytes before upload and rejects any report that doesn't match, so the image you uploaded and the image that was tested are provably the same one.
02 · Score
A calibrated primary, corroborated
A peer-reviewed detector (CVPR 2025 lineage), fine-tuned on 2024–26 generators and pinned by checkpoint hash, drives the verdict; independent supporting signals corroborate it.
03 · Decide
A verdict with a false-positive budget
Thresholds are calibrated so at most 5% of real photos would be flagged. You can choose to be stricter and drop that to 1% for evidentiary work.
— Why Vestige
Confidence, including its limits
Detection tools love to quote lab-bench numbers. We publish what survives contact with reality: recompression, messenger re-encodes, screenshots of screenshots.
- The same detector that scores 0.93 AUC catches ~55% of AI images under a social-media re-encode chain when false positives are capped at 5%, and ~43% at the strict 1% standard.
- No tool on the market clears the ~90% evidentiary gate under realistic conditions. Anyone implying otherwise is selling you a liability.
- So every report quantifies exactly what a flag, or its absence, is worth for your image under its estimated condition. That number is your defensible ground.
— Who it's for
Built for the lab. Useful far beyond it.
For specialists
Digital forensics & legal
FPR-capped verdicts, chain of custody, and the caveats a defense expert will raise, already printed on the report.
Learn more →
For enthusiasts
OSINT & fact-checking
Triage viral images with calibrated scores instead of vibes. Built for the recompressed screenshots you actually encounter.
Learn more →
For private users
Personal checks
A dating photo, a marketplace listing, a too-perfect “family emergency” picture. Get a straight, plain-language answer.
Learn more →
— In development
Next on the same engine
For law firms, PIs & HR investigations
Evidence review for legal teams
Court-ready reports on disputed images, with error rates a cross-examination can’t shake.
For insurers & TPAs
Claim-photo verification
Generation, splice, and recycled-photo signals on claim photos, after the re-encode chain.
For journals & research-integrity offices
Scientific-image integrity
Batch figure screening for manipulation, duplication, and generation. Humans decide.
Also on the roadmap: video & voice detection, API access, continuous model refresh →
— The report
Every claim on it is auditable
SHA-256 of the exact bytes analyzed. Thresholds tied to a named calibration run. A hash of the report itself. Built to be attached to a case file, not a slide deck.
Privacy, in three commitments
- We analyze your image and remove it as soon as your report is written. No human ever sees it, and nothing is written to disk, logged, or kept.
- Chain of custody is enforced: your browser hashes the bytes before upload and rejects any report that hashed different bytes.
- There is nothing to delete server-side. The report is returned to you and exists only where you keep it.
— FAQ
Fair questions, straight answers
Can you tell me definitively whether an image is AI?+
No, and be suspicious of anyone who says yes. We return a calibrated statistical verdict at a false-positive rate you choose, with the detection rate and every known limit printed on the report. That is the strongest honest claim current science supports.
What kinds of images work?+
JPEG, PNG, and WebP. Re-shared, recompressed, screenshotted images are exactly what the pipeline is calibrated for. Our benchmark includes a “screenshot of a WhatsApp image” condition because that is what real cases look like.
Do you keep my images?+
No. We analyze your image on our servers and remove it as soon as your report is written. No human ever sees it, and it is never written to disk, logged, or used for training. The report is returned to you and exists only where you keep it.
What does the free trial include?+
The complete forensic report: calibrated verdict, primary and supporting detector scores, robustness panel, limits, and chain-of-custody hashes. 2 images per account per week on the free trial, or 100 a month on Vestige Pro ($2.99). API access is included with both and spends the same quota.
Analyze images free
Create an account and read the full forensic report: thresholds, limits, hashes and all. Free trial, no card required.