Distorted/Blurred saved file

[tridoan]

Hi folks,
I'm having a bit of an issue with saving the generated QR code to the server, vs echoing the image to the browser (for testing). Displaying on the browser appears fine, however, the saved file always ends up distorted like the attached. Does anyone know why?

Here's the real relevant code snippet. QR code generates fine as when i display it, it works. Any one might know what the issue may be? Thanks in advanced

` $qroptions->cachefile = $filename;

        $content = (new QRCodeEx($qroptions))->render(urldecode($data_to_qrcode));

        /*echo $content;
        exit();*/

        // Save the base QR code
        file_put_contents($filename, $content);`

[codemasher]

Hey, where's the rest of the $qroptions? Can you please post all settings you were using?

[tridoan]

Sure thing. I didnt think it mattered because even when i use all default options, it would be the same result

`
$qroptions = new QROptions;
$qroptions->outputInterface = $outputInterface;
$qroptions->outputBase64 = false;
$qroptions->eccLevel = $eccLevel;
$qroptions->quietzoneSize = 2;
$qroptions->circleRadius = 0.4;
$qroptions->scale = 20;
$qroptions->imageTransparent = true;
$qroptions->drawCircularModules = false;

        $qroptions->keepAsSquare = [
            QRMatrix::M_FINDER_DARK,
            QRMatrix::M_FINDER_DOT,
            QRMatrix::M_ALIGNMENT_DARK,
        ];

        $moduleValues = [
            QRMatrix::M_FINDER_DARK => $options['foreground'],
            QRMatrix::M_FINDER_DOT => $options['foreground'],
            QRMatrix::M_FINDER => $options['background'],
            QRMatrix::M_ALIGNMENT_DARK => $options['foreground'],
            QRMatrix::M_ALIGNMENT => $options['background'],
            QRMatrix::M_TIMING_DARK => $options['foreground'],
            QRMatrix::M_TIMING => $options['background'],
            QRMatrix::M_FORMAT_DARK => $options['foreground'],
            QRMatrix::M_FORMAT => $options['background'],
            QRMatrix::M_VERSION_DARK => $options['foreground'],
            QRMatrix::M_VERSION => $options['background'],
            QRMatrix::M_DATA_DARK => $options['foreground'],
            QRMatrix::M_DATA => $options['background'],
            QRMatrix::M_DARKMODULE => $options['foreground'],
            QRMatrix::M_SEPARATOR => $options['background'],
            QRMatrix::M_QUIETZONE => $options['background'],
        ];
        
        $qroptions->moduleValues = $moduleValues;
        
        $qroptions->version = Version::AUTO;
        $qroptions->quality = 90;

`

[codemasher]

Ok, we're getting closer, but what is the value of this $qroptions->outputInterface = $outputInterface;?

[tridoan]

For png images, it would be: QRGdImagePNG::class;

[codemasher]

The above image looks as it is a jpeg, though. I'll try to reproduce the issue here with your settings above and see if I can find anything.

[codemasher]

Ok, i cannot reproduce the issue here. Can you please post a full, self-contained example that produces the issue?

[tridoan]

Thanks for trying. I'll see what I can do. I was hoping someone had encountered this issue before--which I do not suspect to be the fault of this library. Something during the save operation, perhaps even server config, I can't figure it out

…

On Thu, Aug 21, 2025, 2:14 AM smiley ***@***.***> wrote: Ok, i cannot reproduce the issue here. Can you please post a *full, self-contained* example that produces the issue? — Reply to this email directly, view it on GitHub <#312 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAI772XQR4HB2G2EMYALXS33OWEWBAVCNFSM6AAAAACENDV7Z6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMJXGU4TSOA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[codemasher]

Sometimes the cause can be an an issue with the combination of underlying image processing library and operating system (I had that with ImageMagick before), but honestly without a working example that reproduces the issue I can't tell what exactly went wrong here.

[tridoan]

Just wanted to update here that i FINALLY figured this out and the issue is fixed. It turns out, no matter what output format (file extension) i selected in my UI, the rendered file was always SVG, but saved with my intended extension. This was because, this option was not set:

$qroptions->outputType = $imageFormat;

Once i assigned this explicitly, then my saves worked fine.

[codemasher]

Sounds like you mixed up the examples from dev-main with the latest release version, a classic. Glad you found the error and it worked out.