Thanks. But I get this feedback:

[WARNING] Could not fetch resource 'WritersglenLogo_Color.png': replacing image with description
[WARNING] Could not fetch resource 'WritersglenLogo_Color.png': replacing image with description
Error producing PDF.
! Package pdftex.def Error: File `WritersglenLogo\T1\textunderscoreColor.png' n
ot found: using draft setting.

See the pdftex.def package documentation for explanation.
Type  H <return>  for immediate help.

Here's m YAML declaration:
---
...
date: December 23, 2020
header-includes:
   - \usepackage{wallpaper}
   - \ThisCenterWallPaper{1}{WGLogo.png}
---

And here's my source directory:

-rw-r--r-- 1 lloyd lloyd 25516 Aug  1 00:31 WGLogo.png
-rw-r--r-- 1 lloyd lloyd   871 Dec 24 12:23 Writersglen.md

LRP

On Thu, Dec 24, 2020, at 9:43 AM, gnpan wrote:
> You could use the wallpaper package (https://ftp.cc.uoc.gr/mirrors/CTAN/macros/latex/contrib/wallpaper/wallpapermanual.pdf).
> Put the following in your YAML block:
> header-includes: 
>   - \usepackage{wallpaper}
>   - \addtolength{\wpYoffset}{12cm} 
>   - \ThisCenterWallPaper{1}{logo.png}
> 
> Change logo.png to whatever you logo is called (make sure it's in the same folder as your txt file) and adjust the Y offset to a value that gets the logo in the required position. You can also change the scale factor {1}. 
> On Wednesday, 23 December 2020 at 23:38:58 UTC+2 LRP wrote:
>> I'd like to center a logo before the title on my PDF title page.
>> 
>> I found a recipe on the web using \usepackage{titling} in the metadata, but it failed. Can some kind soul show me how?
>> 
>> Many thanks,
>> 
>> LRP
> 

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