Layered, interactive documents. Click to explore at your own depth.
A meta-document that explains the Fathom format by demonstrating it. Every feature described is demonstrated in-line — inline replacements explain inline replacements, block insertions explain block insertions.
A service incident report at three levels: press release, engineering detail, and legal/compliance. Demonstrates how a single document serves communications, engineering, and legal teams.
Einstein's theory from overview to full mathematical detail. Layers progress from accessible summary through conceptual explanations to equations and experimental data.
A clinical product overview at three depths: patient summary, clinical detail, and research methodology. Shows how layered documents can serve patients, clinicians, and researchers from a single source.
A complete PC assembly guide at three depths: step-by-step instructions, contextual explanations of each part and choice, and detailed troubleshooting for when things go wrong.
Write your own layered document and share it with others. Drag and drop your .fathom file or use the file picker to load any document you've created.