Make a seamless Instagram carousel

What a seamless carousel is, and who it’s for

A seamless carousel is an Instagram post with several slides where one image runs across all of them, so each swipe reveals the next part of the picture. It’s a way to show a wide landscape without shrinking it into a thin strip, or to tell a story with several photos that overlap the cuts between slides and pull people along.

Lightframes’ carousel maker is for photographers, travellers and small brands who want that effect without slicing images by hand. Because it’s part of the photo editor, you can develop your RAW files or apply a preset, then lay them out and export the slides, all in one place.

How it works and what happens to your photos

The carousel is built and exported entirely in your browser; your photos are never uploaded. You place photos on one long strip that is as wide as all your slides together. When you export, Lightframes develops each photo once with its edits, at the resolution its frame needs, draws the whole strip at full size, and cuts it into slides at exact slide widths. A photo that crosses a cut therefore continues perfectly on the next slide.

Each photo keeps the edits you made in the editor, so you don’t need to export them first. If you shoot RAW, see the RAW photo editor; for a consistent look across the post, apply the same preset to every photo first.

Sizes

Aspect	Slide size	Notes
4:5 (Portrait)	1080 × 1350 px	The default; takes the most room in the feed
3:4 (Tall)	1080 × 1440 px	Taller portrait slides
1:1 (Square)	1080 × 1080 px	The classic square post

Choose from 2 to 10 slides. The sidebar shows the total, for example “3 × 1080 × 1350”. Slides are exported as JPEG and named in posting order (carousel-01.jpg, carousel-02.jpg…). On a computer they download as one ZIP; on a phone you get Save and Share buttons when the browser supports sharing files.

Layouts

The Layout buttons rearrange the carousel’s photos in one click:

• Panorama: one photo across every slide.
• Framed: a panorama with a margin around it.
• Bridges: a photo over every cut, alternating high and low.
• Staggered: photos zig-zagging across the cuts.
• Row: photos side by side, centred.
• Columns: full-height strips that ignore the cuts.
• Grid: two rows running across the strip.
• Hero: one big photo over the first cut, a grid after it.
• Cover: a full first slide, then a row.
• Scattered: loose prints, some overlapping the cuts.
• Per slide: a full-bleed photo on each slide.

After applying a layout you can change anything. Select a photo to set its Zoom (100–400%), Reframe it inside its frame, Fill slide to make it cover the slide it sits on, bring it to the front or send it to the back, or Remove it. Edges snap to the slide cuts; hold Alt to place a photo freely. Background sets the colour behind the photos: white, black, two muted tones or any colour you pick.

Tips

• Shoot or crop wide. For a 3-slide panorama in 4:5, the strip is 3240 × 1350 px, a ratio of 2.4:1. A photo much wider or narrower than the strip gets cropped; use Zoom and Reframe to choose what stays.
• Keep faces and key details away from the cuts. Use Preview swipe to see each slide as it will appear.
• Make the first slide work alone. It’s the one people see in the feed before they swipe; the Cover and Hero layouts help with that.
• Post in order and don’t apply the app’s own crop or zoom when uploading, or the slides won’t line up.
• Want grids instead of one continuous picture? Use the photo collage maker, which shares the same mode.

Limitations

The carousel maker exports JPEG only, at a fixed 1080 px width. It has no text, stickers or video. Layouts are kept while the tab is open, but unlike your photos and edits they aren’t restored after a page reload, so export before you close the tab. Very long strips with many large RAW files take longer to export, since each photo is developed at full quality.

Questions about privacy or installing the app? See the FAQ, or open the editor and build your first carousel.