How-to Guide
Combine PNG Images Online — Free Grid Tool, Lossless Export
PNG images with transparency — logos, icons, UI elements — need special handling when combined into a grid. MergeFrame preserves alpha channels, so your transparent assets stay transparent.
Try MergeFrame — FreePNG is the format for graphics needing transparency and sharp edges. But combining PNGs is tricky: many tools flatten transparency to white, introduce artifacts, or convert to JPG.
MergeFrame handles PNGs correctly: (1) Alpha channel preserved — transparent areas stay transparent. (2) Lossless export — mathematically identical to source pixels. (3) Resolution preserved — export at any resolution.
Use cases: combining app icons for press kits, merging UI components with transparent backgrounds, building logo walls (3×3 partner logos), assembling diagram exports into documentation images.
Pro tip: set a custom background color to preview how your transparent PNG grid will look on its target background.
How to Do It — Step by Step
- 1
Gather your PNG images
Logos, icons, UI screenshots. Transparency is preserved.
- 2
Open MergeFrame
Navigate to mergeframe.com — free, no account.
- 3
Set background color if needed
Match your target display context for transparent PNGs.
- 4
Build your grid
Choose layout, drop PNGs, adjust spacing. Alpha preserved.
- 5
Export as lossless PNG
Full alpha channel support, zero quality loss.
Ready to merge your images?
100% browser-based. No account. No upload. Free.
Frequently Asked Questions
Will PNG transparency be preserved?
Yes. Alpha channels fully preserved. Transparent areas stay transparent unless you set a background color.
Can I mix transparent and opaque PNGs?
Yes. MergeFrame handles alpha blending correctly per cell.
What background for transparent PNG grids?
Leave transparent for later placement on colored backgrounds. Set a color for known display contexts.
MergeFrame — Combine images into a grid. Free. No account. Browser-only.
Try MergeFrame Free →