Caption: "A computer simulation shows one possible scenario for how light is spread through the early universe on vast scales (image more than 50 Mly across)." (Somewhat edited.)

The original caption does NOT give complete information, but the image is probably for z ≅ 2.5 (Pontzen et al. 2014, p. 1) which corresponds to near cosmic noon ∼ 3.8 Gyr (lookback time ∼ 10 Gyr, z ∼ 2). Recall in the Λ-CDM model, the age of the observable universe = 13.797(23) Gyr (Planck 2018, p. 15, Plik[1]).

The image is in false color, but probably NOT so far off true color.

We do NOT see any individual galaxies in the image. We are seeing large-scale structure: i.e., the cosmic web consisting of galaxy walls, galaxy filaments, galaxy clusters, galaxy groups, and voids.

Credit/Permission: © Andrew Pontzen, Fabio Governato 2014 (uploaded to Wikimedia Commons by User:Uclmaps, 2014) / CC BY-SA 2.0.
Reference: Pontzen et al. 2014, but this image itself is NOT there.
Image link: Wikimedia Commons: File:Large-scale structure of light distribution in the universe.jpg.
Local file: local link: large_scale_structure_cosmic_noon.html.
File: Cosmology file: large_scale_structure_cosmic_noon.html.