The standard for professional-quality printing is . Using a high-resolution file prevents the "blurry" look often seen when downloading low-quality preview images from the web.
If your request for a "300 essay" refers to the word count rather than image resolution, here are the standard specs for a : Download 300dpi zip
: For functional templates rather than just posters, TeachersPayTeachers is a major hub for "Five Paragraph Essay Outline" PDFs and editable templates. Why Use 300dpi for Writing Resources? The standard for professional-quality printing is
Radiology Publication Instructions for Authors - RSNA Journals Download 300dpi zip
: If you are writing a scientific paper, journals often require that all figures be submitted at a minimum of 300dpi to ensure clarity in publication.