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How to get the best upload quality

 

Thank you for commenting on the improvement. The slight difference in quality you noticed between the basic and Flash/HTML5 uploaders only occurs if the original image is considerably larger than our largest stored image size (its longest dimension more than about twice our upper limit of 1280 pixels), and if the original image has a lot of important fine detail. 

This slight decrease in quality will disappear if you can first resize your images before uploading them with the Flash/HTML5 uploader. This can be done using a program like Photoshop, iPhoto, Aperture, or Paint Shop Pro to resize your original images so that their longest dimension is 1280px before using the uploader. This will also be much faster than using the basic uploader, which can be quite slow with large images.

See the example in my next test case, where I do exactly what I just described.

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18 Comments view entire thread 

Testing Uploader Image Quality

 
By: john : May 14th, 2015-17:11
This set was uploaded using the HTML5 uploader:...  

Continuing uploader quality test

 
By: john : May 14th, 2015-17:22
This set was uploaded using the basic uploader ...  

Continuing test with new Aurigma uploaders...

 
By: john : May 14th, 2015-20:51
..and some significant code changes of our own. Here goes, using the HTML5 Aurigma uploader first: ...  

Continuing test with basic uploader

 
By: john : May 14th, 2015-20:59
...which also uses the code changes related to how Imgscalr is used. Here goes: ...  

testing original image sizing

 
By: carl : May 15th, 2015-06:00
html5 loader manually scaled to 1280 original 2.5M 5K image manually scaled to 800 prior to upload ...  

Thank you john

 
By: Mark in Paris : May 17th, 2015-03:34
I've just uploaded one today and it is much better! ...  

The last picture and

 
By: Mark in Paris : May 17th, 2015-05:03
theone on this are the 2 best results to me. Tell me please which final process I should follow when you know. It seems the Basic uploader is better than Flash version. Thanks! Cheers, Mark

How to get the best upload quality

 
By: john : May 18th, 2015-15:21
Thank you for commenting on the improvement. The slight difference in quality you noticed between the basic and Flash/HTML5 uploaders only occurs if the original image is considerably larger than our largest stored image size (its longest dimension more t... 

Perfect, thank you very much John

 
By: Mark in Paris : May 19th, 2015-06:32
It is much easier to know how things work to do them well :) Thanks for your work. Cheers, Mark

Test HTML5 Uploader Wih Pre-sized Images

 
By: john : May 18th, 2015-13:17
These were resized by Photoshop to have a largest dimension of 1280px before being uploaded: ...