Methodology
How It Works
A transparent, layered methodology — and an honest account of what it cannot do.
- 1
You add content
Paste text or a public URL, or drop an image, audio or video file. The real file type is checked from its content, not its name.
- 2
Technical facts are extracted
Container, codecs, resolution, duration, bitrate, EXIF/XMP, color profile, C2PA manifests, encoding and text statistics — only what is really in the file.
- 3
Algorithms measure signals
Local statistical and signal-processing methods compute indicators. Each is compared with a threshold and rated none, weak, moderate or strong.
- 4
The report explains everything
A cautious assessment, a confidence level, the evidence, the limitations and practical recommendations.
What is measured, by content type
| Type | Level 1 — facts | Level 2 — indicators | Where it runs |
|---|---|---|---|
| Text | Characters, words, sentences, paragraphs, language estimate, encoding, invisible characters, page metadata for URLs | Sentence length variation, paragraph uniformity, MATTR diversity, repeated phrases, sentence openers, connector density, assistant-style phrases, AI self-references, Markdown artifacts | Server (in memory) |
| Image | Format, dimensions, JPEG quality and subsampling, EXIF, XMP, ICC profile, PNG text chunks | C2PA and IPTC provenance, generator signatures, generator-typical sizes, texture-normalized error level analysis, noise statistics | Server (in memory) |
| Audio | Container, codec, sample rate, channels, bitrate, duration, ID3/INFO/Vorbis tags | Effective bandwidth, digital silence, pause regularity, noise floor, dynamics, clipping | Your browser |
| Video | Container, video/audio codecs, profile, resolution, FPS, frames, keyframes, bitrate, device and encoder metadata | C2PA provenance, short silent clip format, frame sampling (sharpness, temporal changes, block artifacts), audio track indicators | Your browser |
What no detector can do
AI generators improve constantly and their output can be edited, compressed or re-recorded. Heuristic indicators produce false positives and false negatives. That is why every result is phrased as an indicator and accompanied by its limitations.
- We never show “100% AI” unless verifiable provenance says so.
- We never simulate a result or a feature that is not ready.
- We never send your content to a third party without telling you first.
Check your next file in seconds
Technical and algorithmic analysis are free. No account required.