Guides
Short answers to common file questions
How to open the file in front of you, what the format is, and what to watch for — written by the people who build the viewers.
MedicalHow to view scans from a hospital CD at homeWhat is on the disc, which folder to copy, and how to find your series.6 min readMedicalWhat is a DICOMDIR file?Why it does not open on its own, and what to do instead.3 min readOfficeHow to open a DOCX file without Microsoft WordFour free ways, and which one keeps the document private.4 min readOfficeHow to open a PowerPoint on your phoneSlides, speaker notes and a full-screen show — no app to install.3 min readResearchWhat is a NIfTI (.nii) file?The MRI format of neuroscience, and how to look inside one.5 min readPrivacyHow to check that a site does not upload your filesA two-minute test with your browser’s developer tools.3 min read