Afterlog is a Japanese architecture and renovation portal that helps people discover and compare before-and-after construction projects, contractor information, and job listings. Its searchable directory covers homes, shops, and offices, with projects organized by location, type of work, building type, and area of the property. Visitors can explore examples of renovations, renovations and full remodels, new construction, exterior and landscaping work, and interior projects for homes and commercial spaces.

For construction companies, Afterlog offers profile and project pages to showcase services, expertise, and completed work. Contractors can present before-and-after photos alongside project details and share published pages with prospective customers. The platform uses AI to draft project titles and descriptions from photos and work information; companies can review and edit the text before publication. Company pages and up to three project listings are available free of charge, while additional paid features are described in its pricing plans. Users can also create free accounts to save projects for later.