Stitch in either direction without stretching
Vertical mode gives every image the same width. Horizontal mode gives every image the same height. Both preserve each screenshot's aspect ratio and place files in the exact list order.
Once two readable screenshots are selected, CollagePlus renders the result. Direction, order, size, spacing, color and format changes all refresh it without a separate create button.
Selection, decoding, canvas rendering and export happen on your device. Object URLs are released when images are removed or when you leave the page.
When to use each direction
Use vertical for conversations, webpages and step-by-step screens. Use horizontal for comparisons, panoramic sequences or screens that should be read from left to right.
Long-image limits
Browsers and devices have finite canvas memory. CollagePlus checks total pixels, width and height before rendering. If a result is too large, select the compact 750 px size or split it into two exports.