Managing the size of image files when uploading to ASP.Net

I have a couple of inquiries to share. I am currently in the process of uploading images to our website using an ASP.Net control. After the image is uploaded, I generate 3 smaller versions using GDI+. My main questions are as follows:

  1. The original size of the image from the camera exceeds 2MB (JPEG). When I save it without any modifications, the file size reduces to around 800Kb. Is this reduction affecting the quality, or is there some unnecessary data added by the camera causing this decrease?

  2. Uploading a 2MB image on a site tends to be slow. Is there a way to decrease the file size as mentioned in question 1 on the client's end before initiating the upload?

Thank you.

javascriptasp.netimage

Answer №1

  1. Instead of saving the incoming stream into a Bitmap and risking changes in parameters like compression, consider saving the stream directly.

  2. There are various flash upload scripts or java applets available for resizing images. One example is

I can't recall the specific Java Applet I used previously.

Answer №2

Be sure to visit for the ability to zip data before sending it to your server. While it may not fully compress the data, it's a helpful step in the right direction.

Answer №3

  1. Most cameras save JPEG images with minimal compression to retain as much original information as possible. If you re-save the image as a JPEG, it will increase the compression rate and create a smaller file size, but this also means sacrificing some of the initial details. It ultimately depends on how much quality you want to maintain.

  2. To achieve this result, using a standard upload won't suffice; instead, you'll need to utilize a component or applet that functions within the client interface.

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