Is MergeFrame really free?

Yes, MergeFrame offers a free version with PNG + JPG 4000px export, 2 exports per day and 8 grid types. The Pro version ($7/month) unlocks unlimited exports, all import formats and customizable grids.

Are my images uploaded to a server?

No. MergeFrame processes your images exclusively in your browser via the Canvas API. No images are uploaded to a third-party server. MergeFrame cannot see, store or access your images.

What image formats are supported?

MergeFrame supports all common image formats: PNG, JPEG, WebP, SVG, GIF and BMP. Export is in high-resolution PNG at up to 4000px, on the free plan and on paid plans alike.

Can I use MergeFrame on mobile?

Yes, MergeFrame is responsive and works on all modern browsers (Chrome, Firefox, Safari, Edge) on desktop, tablet and mobile.

How-to Guide

Create Image Grids to Structure Your AI Prompts

The difference between 'describe this image' and detailed, structured AI analysis often comes down to how you present visual data. An image grid is a prompt engineering technique that consistently produces better results.

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Prompt engineering isn't just about text. It's about how you structure all inputs, including images. An image grid is a 'spatial prompt'. It tells the model how the pieces relate.

Grid-as-prompt strategies: (1) Comparison prompt: 1×2 with Option A left, Option B right signals comparison without text. The spatial layout IS the instruction. (2) Process prompt: Strip of 3 Start → Middle → End tells the AI to analyze a sequence. (3) Hierarchy prompt: 2×2 with Overview → Detail A → Detail B → Summary establishes information hierarchy.

The best AI prompt grids combine visual and text structure: the grid layout communicates 'what to compare,' the text prompt communicates 'how to analyze.' Together, they produce dramatically more precise responses.

For team workflows, standardize grid formats. When every bug report uses the same Strip of 3 (expected → action → broken), the AI learns to expect that structure.

How to Do It: Step by Step

1
Define what you want the AI to do
Compare, analyze sequence, review hierarchy, or extract data.
2
Build the grid encoding your intention
1×2 = comparison, Strip of 3 = sequence, 2×2 = multi-dimension analysis.
3
Number cells, add labels
Cell numbers for precise prompt references. Labels for explicit context.
4
Write complementary text prompt
'In this 2×2 grid, compare the top row against the bottom row for...'
5
Iterate on grid + prompt together
If the AI misses something, adjust both layout and text. They work as a system.

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Frequently Asked Questions

Is building a grid really 'prompt engineering'?

Yes. Spatial arrangement communicates task structure (comparison, sequence, hierarchy) through visual structure.

Always use grids for AI image prompts?

For single images, no. For 2+ images analyzed together: yes. Grids consistently improve multi-image analysis.

Can I use grid prompts with AI agents?

Yes. Include grid-building as preprocessing in agent pipelines. Build programmatically, feed to vision model.

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Free step-by-step guides from the same use case and from adjacent ones.

Optional: 10 social media grid templates you can import in one click, plus occasional MergeFrame tips. The tool stays 100% free and account-free: it is a bonus.

MergeFrame: Combine images into a grid. Free. No account. Browser-only.

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