Drag and drop images from file explorer, ACDSee application, Windows comander into Thumbnail's factory table grid.
Right click table grid to launch pulldown menu and load image into cell.

Arrange table by dragging images between cells. Delete image or load another.

Set thumbnail size, style and background color or file
Look at thumbnail and picture styles

Set picture size, bevel, feather mask and shadow.
Look at thumbnail and picture styles

Choose HTML page properties as text, link, active link, followed link colors, page title and back link.

Set table properties: columns, rows, alignment, table title. Include information about file name, size and dimensions.

You can manage multiply profiles of settings and choose various options of application.

You can view generated HTML page with default HTML browser before saving final work.

Finally upload all project files to any FTP location