Question2Answer Q&A - Recent questions tagged png

How i can add after all blob image .jpg or .png

Fri, 23 Jan 2015 07:55:39 +0000

How i can add after all blob image .jpg or .png

Now i load image link http://www.question2answer.org/qa/?qa=blob&qa_blobid=558964680035738723

How i load all image add .jpg or .png

http://www.question2answer.org/qa/?qa=blob&qa_blobid=558964680035738723.jpg

http://www.question2answer.org/qa/?qa=blob&qa_blobid=558964680035738723.png

Why is function qa_image_constrain_data() returning a JPEG? [solved]

Wed, 06 Nov 2013 04:08:03 +0000

Question closed! → Just 15 min later I realized that the JPG format is only used when resizing!

This way I have implemented it in my old plugin as well :) good work gidgreen!

I disagree with the solution of always throwing back a JPEG.

With PNG you can save a lot of data and compress much better if it is an appropriate image. E.g. make a screenshot, you will notice PNG is much better in compressing it. Jpeg is better for real life photos.

I suggest changing the: function qa_image_constrain_data($imagedata, &$width, &$height, $maxwidth, $maxheight=null)

so that it returns a PNG image if the image uploaded was PNG. Code example:

$src = imagecreatefrompng($file['tmp_name']);

// create new image
$newImage = imagecreatetruecolor($newwidth,$newheight);

// do the image resizing by copying from the original into $newImage image
imagecopyresampled($newImage,$src,0,0,0,0,$newwidth,$newheight,$width,$height);

    // write image to buffer and save in variable
   ob_start(); // stdout --> buffer
    imagejpeg($newImage,NULL,90); // do JPG instead of PNG
    $newImageToSave = ob_get_contents(); // store stdout in $newImageToSave
   ob_end_clean(); // clear buffer

    // remove images from php buffer
   imagedestroy($src);
   imagedestroy($newImage);

$blobid=qa_db_blob_create($newImageToSave, $extension, @$file['name'], $userid, $cookieid, qa_remote_ip_address()); // v1.5.4

About PNG image created in qa_blob table

Wed, 01 May 2013 04:51:15 +0000

I would like to process rounded corners avatar image(Alfa-channel PNG). The PNG registered into qa_blob table is displayed by JPEG. Is it difficult to display according to PNG format?

Avatars are converted to JPEG

Wed, 28 Nov 2012 01:47:35 +0000

I cannot understand why all uploaded PNG avatars are converted to JPEG??? For what? The images loos ther transparency. Please make support of PNG avatars.

Why does q2a outputs BMP image instead of PNG image? Bug?

Mon, 29 Oct 2012 07:30:27 +0000

I checked qa_blobs table and see that the uploaded images are in file format PNG. However, q2a displays them as BMP? Is this a bug?

Check this example graphic, if you save it, it has extension BMP and is quite big:

However, it was uploaded as PNG!

Can we convert uploaded BMP images to PNG? + Bug?

Mon, 29 Oct 2012 07:14:14 +0000

I just realized that some of my users start uploading BMP files that are quite big (up to 1 MB).

Is there any option to convert uploaded BMP images to PNG?

-- EDIT:
Absolutely weird, I download the file that was uploaded by one of my users. Now I try to upload it here and in my forum as well. Both give me the error notice:

The image could not be read. Please upload one of: GIF, JPG, PNG

So how was my user able to upload the image?

-- UPDATE:
I checked qa_blobs table and see that the uploaded images are in file format PNG. However, q2a displays them as BMP? Is this a bug?