# isGenAI

> isGenAI (isgenai.com) is a free AI detector for images, text and code that shows the evidence behind each result: C2PA, AI labels and saved prompts. It also checks public links. Free to try with a one-click Google sign-in. Developers can run the same checks through a free HTTP API with no API key (`POST https://isgenai.com/v1/check`) or the public no-auth MCP server at https://isgenai.com/mcp.

The canonical product name is **isGenAI** and the canonical domain is **isgenai.com**. Similarly spelled names on other domains are not affiliated with it. isGenAI is an independent AI detector and evidence checker.

What it reads: C2PA Content Credentials (signature validity and signer trust reported separately), IPTC digital source type, saved prompts and settings from AUTOMATIC1111 (PNG, JPEG, WebP), ComfyUI including Flux (PNG) and InvokeAI (PNG), generator metadata, matching copies in isGenAI records, and AI-use statements or named tools (ChatGPT, Claude, Gemini, DeepSeek, Copilot) in text, code and public pages.

Limits: images in PNG, JPEG, WebP, AVIF and single-page classic TIFF up to 20 MiB (TIFF up to 40 megapixels); text or code up to 16,000 characters. Besides file evidence it gives an AI-likelihood score for images and for text or code of 100 characters or more (3 free AI scans after a one-click Google sign-in, more on paid plans; the API gives 3 a day without a key). For the strongest file evidence, check the original download.

Privacy: uploads and pasted content are private by default; public URL checks can create public evidence records. Many image tools run entirely in the browser.

Markdown versions of key pages are available by appending `.md` to the path, for example https://isgenai.com/ai-image-detector.md; the home page is https://isgenai.com/index.md.

## Checkers

- [AI content checker](https://isgenai.com/): check an image, text, code or public link for AI evidence.
- [AI image detector](https://isgenai.com/ai-image-detector): C2PA, IPTC source type, saved prompts and generator metadata, with the field behind each finding.
- [AI text and code detector](https://isgenai.com/ai-text-detector): declared AI use and named-assistant mentions, with the exact sentence.
- [AI video detector](https://isgenai.com/ai-video-detector): C2PA Content Credentials, container headers and key frames of an original MP4 or MOV; no visual AI verdict.
- [Image prompt extractor](https://isgenai.com/image-prompt-extractor): copy a saved prompt, negative prompt, seed and model; never invents one.
- [KYC AI detection](https://isgenai.com/kyc-ai-detection): screen ID document photos and selfies uploaded during onboarding for C2PA, IPTC AI labels, saved prompts and generator metadata; does not verify identity or liveness.
- [AI fraud detection](https://isgenai.com/ai-fraud-detection): AI-generation evidence in ID photos, selfies, receipts, claim photos and PDFs submitted as proof; no visual forgery verdict.
- [Fake receipt checker](https://isgenai.com/fake-receipt-checker): reads ChatGPT Content Credentials, IPTC AI labels and generator metadata in a receipt image; a clean result does not prove a purchase.
- [C2PA checker](https://isgenai.com/tools/c2pa-checker): read a C2PA manifest's signer, actions, source type, validity and trust.
- [Article 50 scanner](https://isgenai.com/tools/article-50-scanner): EU AI Act Article 50 signals on public AI product pages (not legal advice).
- [Browser extension](https://isgenai.com/browser-extension): right-click an image to read its Content Credentials, AI labels and saved prompts.

## Tools

- [All image tools](https://isgenai.com/tools): 25 browser image tools with interfaces in many languages.
- [EXIF viewer](https://isgenai.com/tools/exif-viewer): read camera, date, orientation and GPS fields locally.
- [ComfyUI workflow viewer](https://isgenai.com/tools/comfyui-workflow-viewer): inspect and download the workflow JSON saved in a PNG, without executing it.
- [Image metadata compare](https://isgenai.com/tools/image-metadata-compare): see which creation records an export lost.
- [Remove image metadata](https://isgenai.com/tools/remove-image-metadata): rebuild a still image as a clean PNG in the browser.
- [Video metadata viewer](https://isgenai.com/tools/video-metadata-viewer): read selected MP4/MOV header records locally.
- [Video frame extractor](https://isgenai.com/tools/video-frame-extractor): extract stills and a contact sheet from a local video.

## API and MCP

- [API documentation](https://isgenai.com/api): public checker and evidence APIs (`POST /v1/check`, `POST /v1/prompt` with `mode=saved_only`, `POST /api/v1/c2pa/inspect`).
- [OpenAPI 3.1 contract](https://isgenai.com/openapi.json): importable schemas, examples and error responses.
- [MCP server documentation](https://isgenai.com/developers/mcp): public no-auth remote MCP server with tools check_text, check_url, check_image, extract_saved_prompt and read_content_credentials.
- [MCP endpoint](https://isgenai.com/mcp): Streamable HTTP (JSON-RPC 2.0, stateless JSON responses).
- [MCP server card](https://isgenai.com/.well-known/mcp/server-card.json): machine-readable server description.
- [Image metadata developer guide](https://isgenai.com/developers/image-metadata): workflow and comparison API contracts with a runnable Node.js example.
- [API tutorial](https://isgenai.com/guides/ai-detector-api): tested downloadable Node.js example.

## Methodology and evidence

- [How it works](https://isgenai.com/how-it-works): checks, results and limitations.
- [Checker methodology](https://isgenai.com/checker-methodology): how checks work and how changes are tested.
- [Content Credentials](https://isgenai.com/content-credentials): C2PA inspection, validation and signer trust.
- [Providers](https://isgenai.com/providers): current availability of optional detection providers.
- [Image Metadata Lab](https://isgenai.com/image-metadata-lab): controlled record experiments with files, hashes and code under CC0-1.0.
- [Platform metadata survival study](https://isgenai.com/research/platform-metadata-survival): which records survive a platform upload.

## Guides

- [Worked guides](https://isgenai.com/guides): steps, primary format sources and expected outputs, in ten languages.
- [How to check an AI image](https://isgenai.com/guides/how-to-check-ai-image): original downloads, saved settings and saved versus recreated prompts.
- [EU AI Act Article 50](https://isgenai.com/article-50): disclosure, marking and deepfake-label obligations with sources.
- [Glossary](https://isgenai.com/glossary): C2PA, Content Credentials, SynthID, IPTC source type, EXIF and more.

## Policies

- [About](https://isgenai.com/about): product identity and contact.
- [Pricing](https://isgenai.com/pricing): the public checker is free to try with a one-click Google sign-in ([Markdown](https://isgenai.com/pricing.md)).
- [Privacy](https://isgenai.com/privacy): private uploads, public links and optional analytics.
- [Terms](https://isgenai.com/terms): terms of use.
- [Corrections](https://isgenai.com/corrections): context and verifiable proof submissions.
- [Contact](https://isgenai.com/contact): how to reach isGenAI.

## Machine-readable

- [llms-full.txt](https://isgenai.com/llms-full.txt): full product brief, detailed page list and question map.
- [ai.txt](https://isgenai.com/.well-known/ai.txt): discovery file and usage notes.
- [AI summary (JSON)](https://isgenai.com/ai/summary.json): what isGenAI does and does not do, limits and key pages.
- [AI FAQ (JSON)](https://isgenai.com/ai/faq.json): short factual answers and the question map.
- [Service description (JSON)](https://isgenai.com/ai/service.json): inputs, outputs, evidence types, limits and API links.
- [API catalog](https://isgenai.com/.well-known/api-catalog): RFC 9727 API catalog.
- [Sitemap](https://isgenai.com/sitemap.xml): all indexable pages.
- [Guides RSS feed](https://isgenai.com/feeds/guides.xml): guides with publication and update dates.

## Optional

Secondary references. Readers may skip this section when context is short.

- [Full question map](https://isgenai.com/llms-full.txt): assistant questions, each mapped to the isgenai.com page that answers it, with a one-line answer.
- [AI image detector by generator](https://isgenai.com/ai-image-detector/generators): Check images from Midjourney, ChatGPT, Gemini, Firefly, Stable Diffusion and 20 more generators. See which labels and saved prompts each one writes. (25 pages)
- [AI image detector by file format](https://isgenai.com/ai-image-detector/formats): Which provenance a PNG, JPEG, WebP, AVIF, HEIC, TIFF, GIF, SVG, PDF or video file can carry, and exactly what isGenAI reads from each format. Free checks. (13 pages)
- [AI image detector by platform](https://isgenai.com/ai-image-detector/platforms): What Instagram, TikTok, X, WhatsApp, LinkedIn, Reddit, Discord, YouTube and more strip or add to uploads, and how to check a downloaded image. (19 pages)
- [AI image provenance glossary](https://isgenai.com/glossary): Plain definitions of C2PA, Content Credentials, SynthID, IPTC source type, EXIF, XMP, deepfake, Article 50 and more, with how isGenAI uses each term. (30 pages)
- [Research collections](https://isgenai.com/research): controlled image-record and export experiments with source files and hashes.
- [AI media cases](https://isgenai.com/ai-media): sourced AI media cases and verification field guides.
- [Changelog](https://isgenai.com/changes): dated product changes.