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ID Image Best Practice

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Image Quality Requirements

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Resolution and Clarity

• Minimum Resolution: 300 DPI (dots per inch)
• Recommended Resolution: 600 DPI or higher
• Image Clarity: Sharp, clear images with good contrast
• Focus: All text and details must be clearly readable

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Lighting and Exposure

• Lighting: Even, diffused lighting to avoid shadows and glare
• No Flash: Avoid direct flash which can cause glare and wash out details
• Natural Light: Use natural daylight when possible
• No Reflections: Ensure no reflections obscure important information

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Image Composition

• Full Document: Capture the entire document within the frame
• No Cropping: Include all edges and corners of the document
• Proper Orientation: Document should be straight and level
• No Obstructions: Ensure no fingers, hands, or other objects cover the document

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Supported File Formats

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Recommended Formats

• JPEG (.jpg, .jpeg): Most common, good compression
• PNG (.png): Lossless compression, better for text

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Not Supported

• GIF (.gif): Limited color depth
• BMP (.bmp): Large file size
• WebP (.webp): Limited browser support
• TIFF (.tiff, .tif): Too large for web processing
• PDF (.pdf): Not supported for image processing

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File Size Guidelines

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Size Limits

• Minimum Size: 100 KB
• Recommended Size: 1-5 MB
• Maximum Size: 50 MB
• Optimal Size: 2-3 MB for best quality/speed balance

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Compression Guidelines

• JPEG Quality: 80-90% for optimal balance
• PNG Compression: Use standard compression
• Avoid Over-compression: Don’t compress below 70% quality

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Document-Specific Guidelines

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National IDs and Driver’s Licenses

• Front Side: Capture entire front face
• Back Side: Capture entire back face
• Security Features: Ensure holograms and security elements are visible
• Barcode/QR Code: Include any machine-readable codes

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Passports

• Data Page: Focus on the main data page
• Machine Readable Zone: Ensure MRZ is clearly visible
• Photo: Passport photo should be clear and recognizable
• All Text: All printed text should be legible

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Residence Permits and Visas

• Full Document: Include all pages if multi-page
• Stamps and Stickers: Ensure all official stamps are visible
• Dates and Numbers: All dates and identification numbers must be clear

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Technical Specifications

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Image Processing Requirements

• Color Depth: 24-bit color (16.7 million colors)
• Color Space: sRGB or Adobe RGB
• Aspect Ratio: Maintain original document proportions
• No Digital Alterations: Do not edit, crop, or modify images

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Upload Guidelines

• Base64 Encoding: Images must be properly base64 encoded
• No Data URI Prefix: Remove data:image/jpeg;base64, if present
• Line Breaks: Remove any line breaks from base64 string
• Character Encoding: Use UTF-8 encoding

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Common Issues and Solutions

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Blurry Images

• Cause: Camera shake or poor focus
• Solution: Use tripod or steady surface, ensure proper focus

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Glare and Reflections

• Cause: Direct lighting or flash
• Solution: Use diffused lighting, avoid direct flash

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Poor Contrast

• Cause: Insufficient lighting or dark background
• Solution: Improve lighting, use light background

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Cropped Documents

• Cause: Camera too close or poor framing
• Solution: Step back to capture entire document

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Over-compressed Images

• Cause: Excessive compression to reduce file size
• Solution: Use higher quality settings, balance size vs quality

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Best Practices Summary

1. Use High Resolution: 300 DPI minimum, 600 DPI recommended
2. Ensure Good Lighting: Even, diffused lighting without glare
3. Capture Full Document: Include all edges and corners
4. Maintain Quality: Use appropriate file formats and compression
5. Follow Size Guidelines: Stay within 1-50 MB range
6. Avoid Digital Alterations: No editing, cropping, or modifications
7. Test Before Upload: Verify image quality and readability
8. Use Proper Equipment: Good camera or scanner for best results

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Quality Checklist

• Image is sharp and clear
• All text is readable
• No glare or reflections
• Entire document is captured
• File size is within limits
• Format is supported (JPEG/PNG)
• No digital alterations made
• Proper base64 encoding
• Good contrast and lighting
• Document is properly oriented