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Instagram does not have a built-in collage maker for feed posts. You need a third-party tool — but you do not need an app. The browser-based collage maker works on iPhone and Android without downloading anything. Here is exactly how to create collages optimized for each social platform.
Make a social media collage in 30 seconds — works on phone, no app needed.
Open Collage Maker| Platform | Recommended Size | Best Layout | Photos |
|---|---|---|---|
| Instagram Feed | 1080 x 1080px (square) | 2x2 or 3x3 | 4 or 9 |
| Instagram Story | 1080 x 1920px (vertical) | 1x2 or 1x3 | 2 or 3 |
| Facebook Post | 1200 x 1200px (square) | 2x2 | 4 |
| Facebook Cover | 820 x 312px (wide) | 3x1 | 3 |
| Twitter/X Post | 1200 x 675px (landscape) | 3x1 or 2x1 | 2-3 |
| Pinterest Pin | 1000 x 1500px (tall) | 1x3 | 3 |
| LinkedIn Post | 1200 x 1200px (square) | 2x2 | 4 |
Stories are 1080x1920px (9:16 vertical). Use a 1x2 or 1x3 layout for a vertical arrangement. Resize photos to matching widths before uploading. The collage tool creates a tall image that fills the story frame.
The collage maker runs in any mobile browser. On iPhone (Safari) or Android (Chrome):
No app download. No account creation. The same tool works on desktop and mobile identically.
Instagram-ready collages in 30 seconds. No app, no signup.
Open Collage Maker
David spent ten years as a software developer before shifting to technical writing. He covers developer productivity tools — JSON formatters, regex testers, timestamp converters — writing accurate, no-fluff documentation.
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