FG1

I also need the ability to delete images. 
I initially uploaded all my portfolio photos as high resolution images  - but the large files make the website too slow. I need to replace all images with lower res ones for faster page display. But I cant delete the first set of images. I'm going to have to sort through TWO of every image each time I want to select an image. 

I also need the ability to delete images. 
I initially uploaded all my portfolio photos as high resolution images  - but the large files make the website too slow. I need to replace all images with lower res ones for faster page display. But I cant delete the first set of images. I'm going to have to sort through TWO of every image each time I want to select an image. 

It will be easier to use javascript since it will help fetching the caption from the image/slide, that you can edit the text directly in editor. 
But there is a trick that require more effort from you to find the slide id and manually adding the caption into custom css. Each slide has unique id that can be used to target like so

For js solution, join this topic for previous answer
 

Thank you @bangank36for your great help - the code you recommended worked to display captions on the lightbox! THANK YOU 😄

@bangank36 see attached screenshot of lightbox css code in header section

Thank you for your reply 🙂
Sorry my site isn't finalized yet so it isn't live/publicly accessible yet.  sorry :[]  I've attached screenshots instead. 
I created my site 2 weeks ago (June 2021) so I assume I'm using 7.1 . 
I have my photography portfolio in a Gallery - Grid: Masonry. I have entered Description text for each image. I have enabled Ligthbox. I have added I HAVE NO OTHER CUSTOM CODE ADDED. 
I'm trying to do the following: I want NO captions on the main gallery page (like now), but when I click an image, I want the lightbox to display with the caption (name of the model from the image Description text) for that image to show beneath the bottom left corner of the image. Make sense?
Thank you so much!

@tuanphan @bangank36 here's my site pw .
On my "Portfolio" page, I'm trying to get captions to appear below lightbox in bottom left corner:
https://turtle-fish-48mt.squarespace.com/
pw: foto4321!
thank you again!

both the sample images have Description text. Do I need to add another caption somewhere else too?

You can setup access password & share url

Hi 🙂 I'm also tryin to get captions on a Lightbox in 7.1 using Grid gallery. its driving me nuts. 
This is a long thread and I cant tell what specific css code to put in the code injection section.
Can someone help? Many thanks!!