The main objective of this work is to analyze the labels assigned to the photographic documents in a specific commercial agency, Agefotostock, in order to know in what aspects they affect and what are the most common characteristics of these free descriptors. Among the nine thematic categories offered, the so-called People was chosen, since it was inferred a priori that it would be the one that could focus more on the same photograph. Finally, it was decided to select, within the aforementioned category, the first 100 photos recovered in the last fortnight of April 2019 ordered according to their popularity, which assured us to have a sufficiently large sample. The study of the sample was approached taking the following elements of analysis: number of labels assigned by photography; type and morphology of the terms; number of terms per label; percentage of content labels versus format tags or techniques; percentage of denotative and connotative labels, coincidence of labels and synonymy