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

Merge Images into a Grid for Twitter and X Posts

Twitter limits you to 4 images per tweet, but what if you need to show 8? Merge them into two grids of 4, and suddenly you're sharing twice the visual context.

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X (Twitter) is text-first, but visual content outperforms text-only tweets in engagement. The limitation: 4 image attachments per tweet. Grid merging is the power user's solution.

Strategies: (1) Merge 4 analytics charts into 2×2 → add summary dashboard as separate image, (2) Merge 4 event photos into grid → add banner and headshots, (3) Merge 3 UI states into Strip of 3 → still have 3 attachment slots free.

Twitter compresses heavily. Compensate: export at 2× display size (2400px for 1200px display), use PNG for text, avoid fine details near cell borders where compression artifacts are worst.

How to Do It: Step by Step

1
Select images to pack
4–8 images. Plan grid-to-attachment ratio.
2
Open MergeFrame
Visit mergeframe.com: free, instant.
3
Build your grid(s)
2×2 for 4 images, Strip of 3 for strips. Keep simple.
4
Export at 2400px wide
2× display size to beat Twitter compression.
5
Attach and write compelling copy
Upload grid(s). Caption describing what the grid shows.

Ready to merge your images?

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

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Frequently Asked Questions

How does Twitter crop grid images?

16:9 in feed. Square shows fully on click. Avoid critical content near top/bottom edges.

Can I use grids in threads?

Yes, most powerful use case. Each tweet carries 1–4 grids, multiplying visual info 4×.

Does compression ruin grid quality?

It degrades. Compensate with 2× resolution and PNG. Avoid gradients and subtle transitions.

Related Free Tools

🖼️ Make a Photo Grid for Free, No Software 🔲 Online Picture Grid Maker, Free & Instant 📐 Free Image Grid Maker 📸 Combine Photos for Instagram 🟦 Put Pictures in a Square Grid 🔗 Merge Images Together Free

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