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

Batch Process Images into Grids for AI Vision Models

Your workflow has dozens of images to analyze, and every separate upload costs you an attachment or an API call. Batching images into grids turns 9 separate API calls into 1, saving time and tokens.

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Processing large volumes through vision APIs: 27 product photos individually = 27 API calls. The same 27 batched into 3 grids of 9 = 3 API calls. Beyond cost savings, a batch is one grid and one prompt: the same criteria are stated once for the whole set instead of re-typed per image.

Practical workflows: (1) E-commerce: batch 9 product photos for AI quality control, (2) Content moderation: batch 9 user-submitted images, (3) UI testing: batch 9 app screens for regression detection, (4) Data extraction: batch 9 receipts for OCR.

For API automation, generate grids programmatically with canvas libraries (sharp, Pillow). Pass the merged grid as a single image input. Include grid structure in your system prompt: 'You will receive a 3×3 grid of 9 images. Analyze each individually.'

How to Do It: Step by Step

1
Organize into logical batches
Group by category or analysis type. 9 images per 3×3 grid is the sweet spot.
2
Open MergeFrame, build 3×3
4px spacing. Logical order for consistent AI analysis.
3
Export at 3000px
Larger grids need higher resolution. ~1000px per cell in a 3×3.
4
Feed to your AI workflow
Upload with batch processing prompt specifying analysis per cell.
5
Parse and use results
AI returns per-cell analysis. Map results back to original images.

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100% browser-based. No account. No upload. Free.

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Frequently Asked Questions

How many images can I batch into one grid?

Up to 12 images per grid on the free plan (48 with Pro). For simple classification, denser grids can work at very high resolutions.

Can I automate grid creation?

Yes. Node.js with sharp or Python with Pillow for production pipelines.

Does batching reduce analysis accuracy?

For most tasks, no. For comparative tasks, it improves accuracy. For extreme detail tasks, use single images.

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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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Combine Images Into a Grid, Free Online Tool