Collage Basics2026-07-0718 min read

Custom Layout Builder: Design Any Grid You Want

Preset layouts cover the common cases, but sometimes the story needs a shape that isn't in the list. The Custom layout builder lets you set your own grid and merge cells into larger blocks, so you can design a feature layout, a magazine spread, or a wide banner in a few taps — no design software required.

Where to find it and how it works

In the Layout panel, switch the toggle from Preset to Custom. You get two number inputs — Rows and Columns — and a live grid preview below them. Each supports 1 to 8, so the builder can produce anything from a single frame up to an 8×8 grid of 64 cells.

The grid preview is interactive. Tap one cell, then tap a second cell, and the whole rectangle between them merges into one large block. Tap a merged block again to split it back into single cells. The counter under the grid shows exactly how many photo slots the current layout will create, and Reset grid returns every cell to its own slot.

When the layout looks right, press Apply Layout. The builder hands the shape to the canvas, which fills each slot with your photos in reading order — left to right, top to bottom — so slot order stays predictable no matter how you merged the cells.

Want to follow along as you read? Open the Custom layout builder — the link drops you straight onto the Custom tab so you can test each idea below.

What layouts you can build

Uniform grids are the simplest: set 3×3 for a classic nine-grid, 2×2 for four photos, or 1×5 for a vertical strip. If you never merge a cell, the builder behaves like a clean preset grid at any size up to 8×8.

Merging is where it gets powerful. Merge the top row of a 3×3 into one block and you get a wide hero image above six thumbnails — a feature layout. Merge a 2×2 square inside a 4×4 grid to create a large focal point surrounded by details, the classic magazine collage. Merge an entire row or column to build panorama bands or a tall sidebar next to a stack of smaller frames.

Because merges always form rectangles, the result stays clean and printable. You can combine several merges in one grid — for example a large top-left block, a wide bottom banner, and a column of small frames on the right — to compose an asymmetric layout that still lines up perfectly.

Tips for cleaner results

Start from the photo you want to feature. Decide which image is the hero, give it the largest merged block, and let the remaining cells hold supporting shots. Building around one focal point reads better than a grid of equal squares.

Match the merged block's shape to the photo inside it. A wide block wants a landscape photo; a tall block wants a portrait. Merging cells to fit the image beats cropping a photo to fit a square, especially for faces and product shots.

Keep the slot count close to the number of photos you actually have. Empty slots leave gaps, and a 6×6 grid you can't fill will look sparse. If you are unsure how many photos suit a shape, the nine-grid guide and the composition rules for collages both help you decide before you build.

Custom vs. preset: when to reach for the builder

Presets are faster when your photo count matches a standard shape — four squares, a nine-grid, a simple strip. Reach for the builder when the message needs emphasis: one photo that must be larger than the rest, a panorama that should span the full width, or an odd count like five or seven that no tidy preset covers.

The builder also helps when a preset is almost right but one cell is in the wrong place. Instead of settling, set the same rows and columns as the preset and merge the cells you want combined. You keep the familiar structure and add exactly the emphasis you need.

If you find yourself building the same custom shape repeatedly, save it as a starter project in the local library so future collages begin from your layout instead of a blank grid. The local project library guide covers how saved projects work.

Understanding rows, columns, and merged blocks

Rows and columns define the underlying framework, and every merge happens inside that framework. A 4×4 grid gives you sixteen equal cells to work with; merging four of them into a 2×2 block leaves thirteen slots total. The slot counter always reflects the real number after merges, so you can size your photo selection to match.

Merges only ever consume single cells, which is why every block stays a clean rectangle. You cannot create an L-shape or a staircase, and that limit is deliberate — it guarantees the layout prints and exports without distorted cells or awkward gaps.

If a merge does not behave as expected, the second cell you tapped probably crossed an existing block. Split that block first, or press Reset grid and start the merges again from a clean framework.

Layout recipes to try

Feature-and-thumbnails: set 3×3, merge the top row into one wide block, and drop your best shot there with eight supporting frames below. Great for event recaps and product highlights.

Magazine focal point: set 4×4 and merge the center four cells into a 2×2 block for a large central image ringed by twelve small ones. Works well for mood boards and travel stories.

Panorama with captions: set 3×2, merge the entire top row into a wide banner for a landscape or group shot, and leave the bottom three cells for detail images. For platform-specific dimensions, pair this with the resizing guide.

Practice exercise: build one feature layout from scratch

Pick seven photos where one is clearly the strongest. Open the Custom tab, set 3×3, and merge the top row into one wide hero block. Confirm the slot counter reads seven, then press Apply Layout and place the hero shot in the wide block.

Now rebuild the same set as a magazine layout: reset the grid, set 4×4, and merge the center four cells. Notice how the same photos feel different when the focal point moves from the top to the middle.

Preview both at phone size and keep the one where the hero image reads first and the supporting shots stay legible. Save the winner as a starter project so your next collage of this type begins from the layout, not a blank grid.

Applying the guide inside a collage editor

When you move from planning into editing, make only one major decision at a time: image count, layout, crop, spacing, background, then export. Changing all of them together makes it hard to understand what improved the result.

Use the first draft as a diagnostic tool rather than a final design. If it feels weak, identify whether the weakness comes from image choice, layout hierarchy, or finishing details. Each problem requires a different fix.

Turn the advice into an editing brief

Use "Custom Layout Builder: Design Any Grid You Want" as a practical assignment, not only as reading material. Before opening the editor, rewrite the article's main idea as a one-sentence brief that names the audience, destination, and job of the final image. That brief gives every later choice a reason: which photos belong, which layout fits, how much detail is useful, and what the exported file must prove at first glance.

Because this article sits in the Collage Basics category, judge each candidate image by information value before judging style. Ask whether it supports the key ideas in the article, especially "Where to find it and how it works", "What layouts you can build", "Tips for cleaner results", "Custom vs. preset: when to reach for the builder". A visually pleasant photo is still weak if it does not help the viewer understand the subject, sequence, comparison, texture, result, or decision the collage is meant to communicate.

A useful planning pass separates images into three roles: primary evidence, supporting context, and atmosphere. Primary evidence should carry the first impression. Supporting context explains scale, steps, before-and-after relationships, use cases, or surrounding details. Atmosphere should be used sparingly, only when the collage needs emotional rhythm. This prevents the final layout from becoming a random album of leftovers.

Build the collage in controlled passes

Once you start editing, finish structure before decoration. The first pass should decide image count, canvas ratio, and hierarchy. Avoid spending time on corner radius, background color, filters, or watermark placement until the basic story works. If the structure is weak, decoration only hides the problem temporarily; if the structure is strong, even restrained styling can look polished.

Use the article's section headings as a checklist for the second pass. First ask whether "Where to find it and how it works" is visible in the strongest area of the collage. Then check whether the other ideas have a matching image, crop, spacing choice, or export decision. This turns each paragraph into an editing action instead of leaving the advice as abstract guidance.

The third pass is for refinement: align margins, check tight crops, make screenshots readable, remove repeated information, and compare one focused change at a time. Keep a temporary export before major revisions. Collage editing becomes confusing when layout, crop, background, and format all change together, because you can no longer tell which change actually improved the image.

Review the export in its real context

Before publishing, inspect the collage at the size where people will actually see it. Social posts need to survive phone feeds and thumbnails. Product images need to stay recognizable in listing grids. Tutorial screenshots need readable text. Event and family recaps need faces and gestures that still carry emotion after cropping. The editor canvas proves that the layout exists; the destination preview proves that it works.

Do a separate risk pass for anything that should not be public. Look for names, addresses, order numbers, license plates, private chats, browser tabs, client files, and background details inside screenshots or photos. For commercial work, also confirm that uploaded images, logos, fonts, and source materials are cleared for use. A collage tool can help arrange and export, but it cannot replace privacy and licensing judgment.

Save two kinds of output when the collage matters: a master export directly from the editor and a sharing copy for the platform where it will be posted. Many apps recompress images or soften text without warning. Keeping the master file gives you a clean reference for later resizing, re-exporting, or client revisions, and turns the article's advice into a repeatable workflow rather than a one-time result.

Turn the result into a reusable workflow

After finishing a collage, review the decisions that should be repeated next time. Note the image count, hero-image ratio, spacing, background, export format, and review order that worked. These notes are small, but they prevent the next project from starting from a blank page and make the advice easier to apply under time pressure.

If "Custom Layout Builder: Design Any Grid You Want" describes a type of work you create often, save a clean version of the project as a starter template. Keep the layout and base styling, but remove temporary photos, outdated text, private screenshots, and any campaign-specific details. A reusable template should preserve the method, not quietly carry old information into a new export.

Over time, collage quality comes from a stable process as much as from visual taste. After each article exercise, write down which images were most useful, which layout made the message clearest, and which export size fit the destination best. That record helps future edits move faster, keeps visual style more consistent, and turns a single successful collage into a practical production habit.

Related articles

Continue editing images

After reading the guide, open the collage tool to try nine-grid layouts, long image stitching, side-by-side comparisons, and product collages.

Open Photo Collage Tool
Feedback