IOS background image SignaturePad

Hello Dario,
Would you please clarify whether you enabled the applyImageFit PDF configuration option?

Hello,

Thanks, I hadn't seen that.
Can you tell me why when I try with this json for example the 1st time when saving in PDF I only have one image out of 4 then 2nd saving without change 2 images out of 4 then 3rd saving 4 images out of 4
I want all my images (logo, background, background with signature, image) from the first save.

JSON
const json = {
  "logo": "https://api.surveyjs.io/private/Surveys/files?name=56f6cf87-472f-4886-b8ba-0a90222beab5",
  "logoWidth": "150px",
  "logoHeight": "100px",
  "logoPosition": "right",
  "pages": [
    {
      "name": "page1",
      "elements": [
        {
          "type": "signaturepad",
          "name": "question1",
          "title": "Veuillez indiquer sur le dessin l'endroit où vous avez mal",
          "isRequired": true,
          "showPlaceholder": false,
          "backgroundImage": "https://api.surveyjs.io/private/Surveys/files?name=56f6cf87-472f-4886-b8ba-0a90222beab5"
        },
        {
          "type": "image",
          "name": "question2",
          "imageLink": "https://api.surveyjs.io/private/Surveys/files?name=aed6942e-5548-427c-8947-aff4ddb08955",
          "imageFit": "cover",
          "imageHeight": "auto",
          "imageWidth": "100%"
        },
        {
          "type": "signaturepad",
          "name": "question3",
          "showPlaceholder": false,
          "backgroundImage": "https://api.surveyjs.io/private/Surveys/files?name=f9c9e3cc-fa1f-45ca-bab6-5549e072a680"
        }
      ]
    }
  ],
  "showQuestionNumbers": "off"
}

Thanks

Hello,
Thank you for the update. Unfortunately, I didn't completely get it from your message whether or not you enabled the applyImageFit PDF configuration option. Would you please confirm this?

For the record: we researched a related issue in the past: Signature Pad - Signatures are not exported to PDF when applyImageFit: true. When the applyImageFit option is enabled, the SurveyJS PDF library uses an HTMLCanvasElement element to render images, apply the desired image fit and produce the resultant PDF image element. However, it appears that Safari is unable to properly handle it. As a result, images may not be available on the first PDF export call. Here are related issues:

• Image is often missing on first render on Safari iOS
• SVG to PNG not render images in Safari browser

To resolve the issue, we suggest that you disable the applyImageFit option.

I look forward to your reply.

Hello,

No, I hadn't enabled the applyImageFit option.

Before enabling it only on iOS, I had a problem when rendering to PDF: just the signature background doesn't display. The signature, logo, and other images generally display correctly.
After enabling this option, the background images appear, but the rest (logo, image, etc.) appear subjectively, potentially from the first rendering, but sometimes not after several renderings.

Do you have a solution for this? When surveys are completed by iOS users, I want all my images to appear in the PDF from the first rendering.