The depicted text is ineligible for copyright and therefore in the public domain because it is not a “literary work” or other protected type in sense of the local copyright law. Facts, data, and unoriginal information which is common property without sufficiently creative authorship in a general typeface or basic handwriting, and simple geometric shapes are not protected by copyright.
This tag does not generally apply to all images of texts. Particular countries can have different legal definition of the “literary work” as the subject of copyright and different courts' interpretation practices. Some countries protect almost every written work, while other countries protect distinctively artistic or scientific texts and databases only. Extent of creativeness, function and length of the text can be relevant. The copyright protection can be limited to the literary form – the included information itself can be excluded from protection.
This image is used on a user page of a Wikimedia user and is stored on Commons according to the rules set out in Commons:Project scope#File in use on Commons only: the uploading of small numbers of images (e.g. of yourself) for use on a personal Commons user page is allowed or Commons:Project scope#File in use in another Wikimedia project: the uploading of small numbers of images (e.g. of yourself) for use on a personal user page of another project is allowed as long as that user is or was an active participant on that project. If the image ceases to be used it may be eligible for deletion as it may have no educational purpose.