How to submit additional charts, pictures or datasets in a journal?

Submitting supplementary figures, images, or datasets typically occurs electronically via the journal's manuscript submission system. Most reputable journals explicitly permit and provide specific procedures for such supplementary materials during the initial submission process. Carefully consult the journal's detailed "Instructions for Authors" section prior to submission. Key requirements typically include using designated file-naming conventions, employing acceptable file formats (e.g., high-resolution TIFF/JPEG for images, CSV/XLSX for datasets), adhering strictly to maximum file size limits, and ensuring each supplementary item is clearly labeled and sequentially referenced within the main manuscript text. Ethical considerations regarding data accessibility and anonymization must also be observed. During manuscript submission via the online portal, locate the specific section dedicated to uploading supplementary files; select the appropriate file category. Clearly list and describe each uploaded item within the designated field or a separate supplementary file list document. The core value lies in enriching the research evidence presented without overwhelming the manuscript's narrative flow while significantly enhancing accessibility, verifiability, and reproducibility for the academic community.