À ma connaissance, la version web de Word est limitée ; j’ai téléchargé le fichier que je testais sur OneDrive et je l’ai ouvert depuis là, sans même pouvoir voir l’image pour la copier.
Je pense qu’il s’agit d’un cas où la version web de Word fait quelque chose d’inapproprié.
MODIFICATION : Je l’ai testé en créant un nouveau document dans Word Online et en l’enregistrant localement.
Ouvrir dans LibreOffice (désolé, pas de Word natif sous Linux), les formats disponibles fournis par la copie de l’image dans le presse-papiers sont :
TIMESTAMP,TARGETS,MULTIPLE,SAVE_TARGETS,application/x-openoffice-svxb;windows_formatname="SVXB (StarView Bitmap/Animation)",application/x-openoffice-objectdescriptor-xml;windows_formatname="Star Object Descriptor (XML)";classname="8BC6B165-B1B2-4EDD-aa47-dae2ee689dd6";typename="LibreOffice 6.4 Text Document";displayname="file:///home/michael/scratch/Document1.docx";viewaspect="1";width="35033";height="27704";posx="0";posy="0",image/png,application/x-openoffice-gdimetafile;windows_formatname="GDIMetaFile",application/x-openoffice-emf;windows_formatname="Image EMF",application/x-openoffice-wmf;windows_formatname="Image WMF",application/x-openoffice-bitmap;windows_formatname="Bitmap",image/bmp,application/x-libreoffice-internal-id-109262
Alors que la copie de l’image depuis Word Online nous donne les formats disponibles :
TIMESTAMP,TARGETS,SAVE_TARGETS,MULTIPLE,text/html
c.-à-d. il n’y a aucun format d’image disponible dans le presse-papiers pour que nous puissions l’utiliser. Si je récupère les données du presse-papiers au format text/html, j’obtiens (pour une petite image d’exemple) ce qui suit :
<meta http-equiv="content-type" content="text/html; charset=utf-8"><img class="WACImage SCXW69312358 BCX0" unselectable="on" src="data:image/png;base64,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" style="margin: 1px; padding: 2px; user-select: text; -webkit-user-drag: none; -webkit-tap-highlight-color: transparent; border: none; white-space: pre !important; vertical-align: baseline; color: rgb(0, 0, 0); font-family: "Segoe UI", "Segoe UI Web", Arial, Verdana, sans-serif; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; width: 44px; height: 29px;">\x00
ce qui se transforme en ceci :
