Il existe un certain nombre de logiciels qui permettent de "transformer" un fichier quelconque (de type Word, ou jpeg dans ton cas) en fichier pdf.
https://pdftojpg.me/ https://itstillworks.com/13340256/how-to-convert-a-jpg-to-pdf-in-windows-vista https://pdftoimage.com/ https://png-to-jpg-converter.fr.softonic.com/ https://free-pdf-to-all-converter.fr.softonic.com/ https://jpg2png.com/fr/
https://www.linternaute.fr/hightech/guide-high-tech/1412963-comment-convertir-un-pdf-en-image-jpeg-gif-png/ https://play.google.com/store/apps/details?id=com.camscanner.pdfscanner&hl=fr https://www.zamzar.com/convert/jpg-to-pdf/ https://fr.pdf24.org/jpg-2-pdf.html https://www.pdfpro.co/jpg-to-pdf https://fr.dopdf.com/ https://convertir-une-image.com/changer-le-format/en-pdf/?s=jpg-vers-pdf
https://free-pdf-to-all-converter.fr.softonic.com/ https://jpg2png.com/fr/ https://jpg_to_pdf_software.en.downloadastro.com/ https://www.conv2pdf.com/ https://forum.openoffice.org/fr/forum/viewtopic.php?f=13&t=33266 https://www.wideanglesoftware.com/support/pdfconverter/save-pdf-document-as-jpg-image.php
https://www.linternaute.fr/hightech/guide-high-tech/1412963-comment-convertir-un-pdf-en-image-jpeg-gif-png/ https://play.google.com/store/apps/details?id=com.camscanner.pdfscanner&hl=fr https://www.zamzar.com/convert/jpg-to-pdf/ https://fr.pdf24.org/jpg-2-pdf.html https://www.pdfpro.co/jpg-to-pdf
https://docs.zone/pdf-to-jpg