Attachments
Publications can carry supplementary files – datasets, slides, code, high resolution figures, anything a reader needs alongside the text.
Adding files
Open the publication for editing, find the attachments section, and either choose files or drag them in. Give each one a description while you are there; a filename alone rarely tells a reader whether the file is worth downloading.
You can rename attachments, reorder them, and delete them from the same place.
Limits and formats
The limit is 100 MB per file. There is no restriction on format – any file type is accepted.
For anything substantially larger than the per-file limit, put the data in a repository built for it (Zenodo, Dryad, OSF, an institutional archive) and link to it from your publication. Those give you a DOI and a citable record, which a file attached to a publication does not.
Who can download them
Attachments follow the visibility of the publication they belong to. Make a publication private and its attachments stop being reachable; make it public and they are public too.
They also inherit the publication's licence. If you attach a dataset you want treated differently from the text, say so explicitly in the description.
Choosing formats
Prefer formats that will still open in ten years, and that do not require software your readers may not have:
- CSV or Parquet rather than a proprietary spreadsheet format
- PDF for documents meant to be read rather than edited
- PNG for screenshots and raster figures, SVG for anything drawn
- Plain text, JSON, or YAML for structured data
Name files so the name survives being downloaded into someone else's cluttered
downloads folder. survey-responses-2026-cleaned.csv is useful there;
data.csv is not.
Figures in the text
Attachments sit below a publication as a list. If what you want is an image inside your text, that is a figure – see Links and images and Figures.