How to output a JPG/JPEG image in html with low quality for faster browsing?

[hervagello]

I have like 50000 images on my server, and each image is about 7mb of size. I made a gallery script based on the famous html code for displaying image :
<img src="image.jpg" width="200" height="150">
Even after setting the width and the height, the image is till taking time to display, because it's always download the 7mb sized image.

So, I'm here to ask you, Experts, if there is any way to display these images in a form of thumbnail with a lower quality, so it can be displayed quickly. I would like to do that without creating thumbnails of those 50000 images.

I appreciate any help or idea from your behalf.
I hope you all find my question interesting and i hope that we can find out a solution for this problem.
Thank you very much.

[drhowarddrfine]

No. The only thing you can do is have images resized smaller.

[omerbutt]

you can try this simple script if you have the jnow how of GD library

Using Imagecopyresized ()

<?php 
 // The file you are resizing 
 $file = 'your.jpg'; 
 
 //This will set our output to 45% of the original size 
 $size = 0.45; 
 
 // This sets it to a .jpg, but you can change this to png or gif 
 header('Content-type: image/jpeg'); 
 
 // Setting the resize parameters
 list($width, $height) = getimagesize($file); 
 $modwidth = $width * $size; 
 $modheight = $height * $size; 
 
 // Creating the Canvas 
 $tn= imagecreatetruecolor($modwidth, $modheight); 
 $source = imagecreatefromjpeg($file); 
 
 // Resizing our image to fit the canvas 
 imagecopyresized($tn, $source, 0, 0, 0, 0, $modwidth, $modheight, $width, $height); 
 
 // Outputs a jpg image, you could change this to gif or png if needed 
 imagejpeg($tn); 
 ?> 
 

Using Imagecopyresampled ()

<?php 
 // The file you are resizing 
 $file = 'yourfile.jpg'; 
 
 //This will set our output to 45% of the original size 
 $size = 0.45; 
 
 // This sets it to a .jpg, but you can change this to png or gif 
 header('Content-type: image/jpeg'); 
 
 // Setting the resize parameters 
 list($width, $height) = getimagesize($file); 
 $modwidth = $width * $size; 
 $modheight = $height * $size; 
 
 // Resizing the Image 
 $tn = imagecreatetruecolor($modwidth, $modheight); 
 $image = imagecreatefromjpeg($file); 
 imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height); 
 
 // Outputting a .jpg, you can make this gif or png if you want 
 //notice we set the quality (third value) to 100 
 imagejpeg($tn, null, 100); 
 ?> 
 

optionally you an use phpthumb also see here
regards,
Omer Aslam

[seoquake]

I still think the most optimal way is to generate thumbnails right after they're uploaded. Why? Because if you generate thumbnails on the fly, all the 7mb still have to be loaded into memory and considerable amount of processing has to be done each time a user views an image.

[omerbutt]

yes seoquake i agree ,
that is why i have added a link to phpthumb in the end , whatever h likes , choices he have.
regards,
Omer Aslam

[nilswap]

Better way is that u can convert all these images in .png format.Because,Noone is going to use .jpg or .jpeg formats.