Photo layout design is a discipline that spans graphic design, photography, and UX — and the grid is its most fundamental tool. Every magazine spread, every portfolio website, every product catalog, and every social media feed relies on grid-based layouts to organize visual information. A well-designed photo layout grid does several things simultaneously: it establishes visual hierarchy (which image gets attention first), creates rhythm (how the eye moves from cell to cell), provides structure (consistent spacing and alignment signal professionalism), and communicates relationships (the spatial arrangement implies connections between images). MergeFrame approaches photo layout as a design tool, not just a utility. The five grid presets provide starting points that cover the most common arrangement patterns, but the real power is in the customization: adjust cell spacing from 0 to 20 pixels to control the visual density of your layout — tighter spacing conveys urgency and intimacy, looser spacing conveys elegance and restraint. Add cell borders in any width to define boundaries or create a framed-gallery aesthetic. Choose export resolution that matches your output medium — low resolution for email attachments and web previews, medium for social media and blog posts, high for print and large-format display. Because every change renders instantly in the browser via Canvas API, you can experiment freely: try three different spacing values, test with and without borders, rearrange your photos into different cells, and compare the outputs side by side before committing to a final export. This rapid iteration capability is what separates a design tool from a simple utility. For specific layout design patterns that professionals use: the Z-pattern layout — arrange photos so the viewer's eye traces a Z across the grid, starting top-left, moving right, then diagonally to bottom-left, ending bottom-right. This leverages natural reading patterns in left-to-right languages and ensures every image gets viewed. The center-weight layout — place the most important image in the center cell of a 3×3 grid and surround it with supporting images, creating a visual focal point that anchors the entire composition. The timeline layout — use a 1×3 or 1×4 horizontal strip to create a chronological visual narrative, with each cell representing a stage in a progression. The contrast layout — alternate between light and dark, warm and cool, or wide and close-up images to create dynamic visual tension that keeps the viewer engaged.