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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

  • 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

Before uploading your ID images, verify:
  • 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