China Visa Photo Resizer & COVA Compressor
Crop to official 33 × 48 mm (390 × 567 px) dimensions and calibrate file weight strictly inside the 40 KB to 120 KB COVA portal bracket in your browser.
Supports JPG, PNG, HEIC, WEBP, PDF, SVG, TIFF, AVIF, GIF, BMP
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Chinese Embassy COVA Digital Upload Standards
Automated biometric rules verified by the COVA online form checker:
| Parameter | Official COVA Requirement | Common Rejection Cause | PixelKit Calibration |
|---|---|---|---|
| Dimensions | 354×472 px to 420×560 px (33×48 mm) | Standard 2×2" square US photo uploaded | Locks 390 × 567 px portrait aspect |
| File Weight | 40 KB minimum to 120 KB maximum | Over-compressed (<40 KB) or heavy (>120 KB) | Targets ~90 KB sweet spot automatically |
| Color Space | 24-bit True Color sRGB JPEG | CMYK or iPhone Display P3 HEIC container | Normalizes to standard sRGB baseline JPG |
| Head Margins | 3–5 mm top crown gap, ≥ 7 mm chin-to-bottom | Cropped too tight at top of hair | Top-anchored biometric head framing |
How to Pass the COVA Automated Photo Validator on First Upload
China’s COVA portal runs one of the strictest automated biometric geometry checks among global consular systems. Even when a photo looks clear to the human eye, COVA rejects images if file bytes fall under 40 KB, exceed 120 KB, or carry unstripped EXIF orientation tags.
PixelKit pre-selects the China Visa (33×48 mm) preset together with the 40 KB – 120 KB range compressor. Your photo is cropped, resampled with high-sharpness Lanczos/bicubic filtering, stripped of conflicting camera EXIF rotations, and encoded strictly inside the accepted kilobyte window without leaving your device.
Strict 40–120 KB Range Engine
Prevents both "file too large" (>120 KB) and "file too small" (<40 KB) COVA upload errors automatically.
No Glasses or Jewelry
Chinese consular rules prohibit eyeglass frames (even clear lenses), hats, and reflective earrings.
100% Local Biometric Privacy
Visa portraits never touch remote cloud servers—processing executes entirely in local browser RAM.
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