AI text detection
Examines vocabulary repetition, recurring phrases, sentence-length distribution, punctuation frequency, and unusual characters. More complete text usually produces steadier statistical signals.
Open text detectorFree AI content detector Text · Image · Video
How can you screen text and images—and review video for AI-generated content?
No login or sign-up required. Text, video, and the default image screen run locally; optional remote image checks disclose uploads before use.
- Three content types
- No login or sign-up
- Evidence you can inspect
Content screening and verification
Choose the content to inspect
Results separate heuristic screening signals, file facts, and evidence limitations.
Text content
Paste the text you want to inspect
GenDetect checks repetition, sentence length, punctuation, and character structure.
Your text is not saved or uploaded
Image content
Choose a local image
GenDetect checks sampled color diversity, luminance variance, and adjacent-pixel edge density.
本地启发式不会上传图片。
Local by default; the notice above applies to remote modes
Video content
Choose a local video
GenDetect reads duration, resolution, estimated average bitrate, file extension, and MIME type.
Analysis time depends on file size
Detection methods
What signals does AI content detection examine?
Each content type needs a different analysis. GenDetect separates screening signals, file facts, and limitations.
AI image detection
Examines color distribution, brightness contrast, and edge gradients. Dimensions and file size are shown separately and never affect the index.
Open image detectorVideo metadata check
Reads duration, resolution, average bitrate estimated from total file size, file extension, and MIME type. It does not inspect frames or audio, so it returns no generation score.
Open video metadata checkHow to read the score
The screening index is a rule anomaly score, not a source probability.
This demo uses local text and image heuristics by default while video shows metadata only. Optional remote image modes return provenance or metadata clues. The index is not trained or probability-calibrated and cannot prove origin.
Understand and verify
Move from a screening index to an explainable judgment
Understand the signals and false-positive limits first, then verify the original file, provenance, and editing process. These resources separate methodology, accuracy, and human review.
How do AI detectors work?
See how text and image signals form screening indexes, which video file facts are read, and what browser heuristics cannot determine.
Read methodology and limitationsCan AI detectors be wrong?
Understand false positives, false negatives, thresholds, and sample differences without mistaking an uncalibrated screening score for a probability of origin.
Review accuracy and false positivesHow do you verify AI content manually?
Check original material, content credentials, publishing sources, version history, and contextual facts with separate workflows for text, images, and video.
Read the human verification guideFrequently asked questions
About AI content detection
Understanding the limits of detection scores helps reduce false positives for human and edited content.
Are AI content detection results accurate?
AI content detection provides supporting clues only. Models, rewriting, compression, and input length can all affect the result, so a score alone cannot establish the source.
Why does text detection need longer content?
Longer text contains more samples of sentence structure, repetition, and punctuation, making statistical signals steadier than they are for short snippets.
What does image and video detection analyze?
The current demo examines image color, brightness, and edges. For video it only displays duration, resolution, estimated bitrate, file extension, and MIME facts and makes no AI-origin judgment.
Can the result be treated as a final verdict?
No. Verify the author, publication date, original file, content credentials, and publishing source before reaching a conclusion.
Does GenDetect require a login, sign-up, or content upload?
No login or sign-up is required. Text, video, and the default image screen stay in your browser. Source metadata, SD/Flux, Gemini visual screening, and available external Verify modes upload to the same-origin API. GenDetect deletes completed uploads immediately and retains interrupted jobs for at most one day; Gemini and external Verify also forward the image to the provider named in the interface.