isGenAI — Free AI Detector for Images, Text & Code

# 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. No account is required. 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 evidence checker, not a guarantee of authorship or factual truth. 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. A missing AI signal does not establish human authorship. isGenAI publishes no accuracy percentage, gives no visual-only verdict, does not score writing style and does not detect SynthID. Screenshots, exports and most social uploads remove file records, so check the original download. No result establishes whether depicted events or claims are true. 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 t

{ "openapi": "3.1.1", "info": { "title": "isGenAI public checker API", "version": "1.2.0", "description": "Importable contract for the public evidence checker, saved-prompt extraction/optional reconstruction, C2PA Content Credentials inspection, the public remote MCP endpoint and the health endpoint. Other endpoints documented on /api are outside this contract. Evidence checks and image quality measurements do not establish human authorship. Saved records can be edited; reconstru