免费 AI 图片检测器 本地信号检查
无需上传文件

在浏览器中运行 AICheck 元数据、水印和 C2PA 证据检查。结果会给出数字证据置信分,但不能作为确定结论或真实性证明。

默认本地处理: 图片字节只保留在当前浏览器标签页中,不会发送给 SugarCube。

Check an image’s source clues

PNG, JPEG, or WebP · maximum 20 MB · you can also paste an image

Use the original download when possible. Screenshots and re-saved files can lose useful evidence.

This checks retained evidence, not whether a picture is true. No signals does not mean human-made.

Checking supported file signals…

This work happens locally in your browser.

01 Validate the image file signature
02 Run AICheck metadata detectors
03 Verify embedded C2PA credentials locally
04 Run AICheck pixel detectors
Local signal report
Calculating…

Evidence confidence score
0/100
AICheck grade: None
No specific generation source identified
Local image views

Preview views are exploratory only and do not affect the evidence score.

Preview of the selected image

What to do with this result

Inspect the individual signals below and ask the source for the original file or creation history. Save the report to keep the evidence together.

Evidence found by AICheck

如何使用本页工具

  1. 选择原始图片

    选择 PNG、JPEG 或 WebP;本地检查,无需登录或积分。

  2. 分别阅读检查项目

    分别查看元数据、凭证状态与像素线索。

  3. 审阅证据并保存报告

    阅读解释,需要时保存 JSON;线索不等于真伪证明。

何时需要检查图片来源线索

一次实际扫描的信号

处理前
处理前1440 × 810 · 796.6 KB

这张已知由 AI 生成的插画,在实际本地扫描中未返回信号,分数为 0,结论为 inconclusive(无法判断)。未检出线索不代表图片由人工创作。

初筛投稿人像

用于说明来源初筛的人像示意

检查原始肖像是否保留来源字段,再向投稿者询问制作过程。报告提供追问线索,不对人物本身作结论。

记录商品素材线索

香水商品素材示意

将商品图片加入素材库前,记录可用元数据,并一同保留供应方原文件与说明。

核查新闻场景素材

虚构社区游行场景示意

查看活动图片是否保留来源信号,再通过原始来源和其他报道核实事件。工具不能证明图中事件真实发生。

整理建筑参考资料

建筑概念模型示意

在资料集中区分概念效果图与项目实拍。嵌入信息可帮助整理文件,但不能证明建筑实际存在。

AI image signal check FAQ

Does SugarCube upload my image?
No. This page reads the selected file in your browser and does not send its image contents to SugarCube.
Can a low score prove an image is real?
No. A low score only means this check found weak or no currently supported evidence.
Does this verify C2PA Content Credentials?
Yes, when an embedded manifest is present. The official C2PA browser SDK parses and validates it locally; validation warnings are shown separately.
Do the color and edge views detect AI generation?
No. They are local visual aids and do not contribute to the evidence score.

选择图片,检查来源线索

文件留在本机。回到功能区选择文件,处理后检查结果。

选择文件