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Detector de Imagens IA

Detecte imagens geradas por IA ou manipuladas com análise avançada

Try It Now — Free

What is Detector de Imagens IA?

Analyze images for signs of AI generation or digital manipulation using Error Level Analysis (ELA), Fast Fourier Transform (FFT), and noise pattern detection. Identify deepfakes, edited photos, and AI-generated content instantly in your browser.

Key Features

Error Level Analysis (ELA) to highlight inconsistent compression artifacts

Fast Fourier Transform (FFT) frequency analysis for grid patterns

Noise pattern analysis to detect sensor inconsistencies

EXIF metadata inspection for tampering clues

Clone detection to find copy-pasted regions

AI probability score with confidence meter

Side-by-side comparison view

100% browser-based — your images never leave your device

How It Works

1

Upload Image

Drop your image onto the tool or click to select a file. Supports JPEG, PNG, WebP, and TIFF up to 20 MB.

2

Multi-Layer Analysis

The tool simultaneously runs ELA compression analysis, FFT frequency decomposition, and statistical noise mapping across the image.

3

AI Scoring

Results from each analysis layer are combined into an overall authenticity score, flagging suspicious regions with visual overlays.

4

Review Results

Examine the detailed report with annotated heatmaps, metadata summary, and a plain-language explanation of each finding.

Who Is This For?

  • →Fact-checkers verifying news photos before publication
  • →Social media moderators identifying manipulated viral content
  • →Legal teams authenticating evidence images
  • →Journalists investigating potentially altered imagery
  • →Researchers studying AI image generation artifacts

Why Use Detector de Imagens IA?

Unlike cloud-based image checkers that require you to upload potentially sensitive photos to a remote server, Zeraku's AI Image Forensics runs every analysis step directly in your browser. Your images never leave your device — critical when checking news photos, private images, or confidential documents. No account, no subscription, no upload size cap. Powered by the same signal-processing techniques used by digital forensics professionals, wrapped in a UI anyone can use.

Beginner's Guide

AI Image Forensics is a tool that helps you check whether a photo is genuine, AI-generated, or edited. If you've seen a suspicious image on social media or in the news and want to verify it, this tool is for you. Simply drag and drop the image onto the page — no technical knowledge needed. The tool analyses the photo and shows you an "authenticity score" along with visual highlights of any suspicious areas. Everything happens inside your browser, so your image is completely private.

Technical Details

Runs entirely in WebAssembly and WebGL with no server communication. Error Level Analysis (ELA) re-encodes the image at JPEG quality 70 via an off-screen canvas and amplifies the pixel-level difference to reveal inconsistent compression — a classic sign of localised editing. The Fast Fourier Transform (FFT) decomposes the image into frequency components using a radix-2 Cooley–Tukey algorithm; AI-generated images often exhibit characteristic grid artefacts in the frequency domain. Noise mapping computes local variance in 8×8 pixel blocks and compares it against the expected photon-shot noise curve for the estimated ISO level. A weighted ensemble of all three signals produces the final authenticity score. All computation runs inside a dedicated Web Worker so the UI remains fully responsive.

Frequently Asked Questions

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