Add Image Trace presets for QR codes and other barcodes
One of the most common issues I have is receiving QR codes or barcodes from a customer as low-resolution JPEGs or PNGs. Asking customers to understand which formats from online generators are vector formats is always an issue.
While I know I can technically regenerate the QR code with an online generator, it feels like a natural extension of the existing Image Trace function to be able to recognise QR codes or barcodes and to snap the vector artwork to a proper grid.
This could be implemented with something like "snap points to 90° angles" or something, but I think the better outcome would be built-in support for recognising the QR code or UPC codes and re-rendering it nicely as part of the operation.
 Kit Grose
    
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Kit Grose
    
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      Kit, clip the image first, then rasterize it again, before using Object Mosaic. 
 Plus you can crop an embedded image directly in Illustrator (although it’s kinda wonky) — try Crop Image button in the Control Panel (or Object > Crop Image command, it’s the same thing).
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       Kit Grose
    
 commented Kit Grose
    
 commentedObject Mosaic is an ingenious suggestion, although it seems to flatly ignore clipping paths, so the image would need to be cropped in Photoshop or similar. 
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      Kit, it’s an interesting request actually! 
 With QR codes currently I utilize the existing Object > Create Object Mosaic command. The tricky thing is to crop it (clip and rasterize solves its) and then count how many squares a code has (for some reason the dialog has no Preview option (therefore this request: http://illustrator.uservoice.com/forums/333657/suggestions/48661520). Then I just Recolor it into strict black-and-white (it takes some times to set up a preset to do it fast), or isolate the result and use Magic Wand to select almost-blacks and remove almost-whites.Here is a related request about creating these directly in Ai: 
 http://illustrator.uservoice.com/forums/333657/suggestions/20556163
 ...but I recall only one plugin that was able to read codes (EAN-13 specifically) directly within Ai.
 
          