Independent Photo Service • Verified Against Official Government Rules
官方护照生物识别诊断 · 100%免费

免费护照照片合规检测工具

在提交护照申请前,免费在线检测您的护照照片是否符合全球190多个国家的官方生物识别标准与ICAO Doc 9303规范。

Select Document Criteria
🇺🇸United Statespassport Photo
Popular:
Official Standards:51 × 51 mm (600 × 600 px)White Background26 – 35 mm Head Height
ICAO Doc 9303 Compliant

Upload photo for instant biometric validation

Drag and drop your selfie or portrait here. Runs full biometric check against official United States rules in seconds.

✓ 100% Free Diagnostic✓ 256-Bit SSL Encrypted✓ Auto-Deleted for Privacy
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需要检测签证照片?

使用针对DS-160与申根签证的专属检测工具。

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256-Bit SSL Encrypted
Instant Scan < 10s
ICAO Doc 9303 Compliant
190+ Country Presets

Official Passport Photo Inspection Standards

Our diagnostic engine audits key biometric requirements mandated by national passport agencies and ICAO Doc 9303.

Head Proportion & Face Ratio

Checks that head height from chin to crown satisfies official ratios: 50%–69% (1–1⅜ in) for US passports, 70%–80% (32–36 mm) for European/Schengen/UK passports, and 60%–80% for Indian passports.

ICAO Doc 9303 Standard

Plain Background & Shadow Elimination

Audits background color compliance (Plain White vs Off-White vs Light Gray) and detects harsh shadows under the chin, behind ears, or across the backdrop.

Zero Shadow Guarantee

Expression, Gaze & Eyewear Rules

Confirms eyes are open and directed into the lens, mouth closed in a neutral expression, no eyewear reflection, and face unobstructed by hair or accessories.

Passport Agency Ready

Frequently Asked Questions

Everything you need to know about our free biometric passport photo checker.

免费护照照片检测工具如何工作?

我们的生物识别检测引擎依据国际民航组织(ICAO Doc 9303)及各国护照管理机构标准实时分析照片:毫米尺寸、头部高度占比(下巴到头顶)、纯色背景均匀度及面部光线。

护照照片被驳回的最常见原因有哪些?

最常见的驳回原因包括:头部比例不符(面部过大或过小)、背景或面部存在阴影、佩戴眼镜反光、露齿微笑或非中立表情,以及照片分辨率不足。

可以使用手机拍摄的照片进行护照合规检测吗?

完全可以!只要在自然光线下、站在浅色背景前,由他人协助在视线平齐位置拍摄清晰人像,即可直接上传检测。

如果检测报告显示护照照片存在问题怎么办?

系统报告会列出具体的调整建议。您只需点击“在工作坊中一键调整”,AI技术将自动更换背景并裁剪为符合官方护照尺寸的文件。

上传的护照照片安全且会自动删除吗?

是的。所有上传均通过256位SSL端到端加密传输,并在24小时内从服务器中自动安全销毁(符合GDPR规范)。