A photo strip is the wrong aspect ratio for almost every Instagram surface. The feed wants 4:5, Stories want 9:16, and a strip is closer to 1:3 — much taller and thinner than any of them. Posting a raw strip without thinking about this is how you end up with the top and bottom frames cut off, or three centimetres of empty white above and below, or a Reels cover that shows a postage-stamp of four unrecognisable faces.
The fix is not to reshoot the strip. It is to know each Instagram surface's exact dimensions and pad or split accordingly. Below is the full breakdown, one surface at a time.
Stories: 1080 × 1920, with padding
For Stories, do not crop the strip. Place it on a 1080 × 1920 background, centred, with even space above and below. The padding can be solid black, a soft gradient, or a blurred copy of one of the frames — the goal is to give the strip room to sit without being chopped.
Respect the safe zones: Instagram overlays the profile handle across the top 250 pixels and reserves the bottom 250 pixels for the reply bar and any interactive stickers. Keep the strip inside the middle 1080 × 1420 region so nothing important gets covered.
FLASHFRAME's "Story" export does this automatically: it composes the strip onto a 9:16 canvas with a chosen background and respects safe zones for stickers and captions. If you are exporting from another tool, make the strip roughly 800 px wide and centre it vertically inside the 1920 px canvas.
Feed: 4:5, single image or carousel
The feed's tallest allowed ratio is 4:5 (1080 × 1350). A strip taller than that gets centre-cropped, which usually clips the first and last frame. Two ways out:
- Pad to 4:5. Same trick as Stories — give the strip a background so it fits without cropping. Cleanest, but slightly wastes feed real estate.
- Split into a carousel. Post the strip as the first slide (padded) and each frame as its own slide after it. The carousel format rewards this — viewers swipe through and see each frame at full size, and Instagram's algorithm favours carousels that get multiple swipes.
A carousel of five images (strip + four frames) usually outperforms a single padded strip by a wide margin. If reach matters, split.
Reels cover: pick the frame, do not crop the strip
The Reels cover area is roughly 1:1 with a 4:5 visible region on the profile grid. Trying to fit a whole strip in there will leave a postage-stamp of frames in the centre. Instead, use one of the four frames as the cover — pick the strongest expression — and put the strip itself inside the Reel as a still image for two to three seconds.
This is the same trick photographers use for magazine covers: the cover is the hook, the contents are inside. Do not try to make the cover show everything at once.
File format and quality
Instagram re-encodes everything you upload. PNG and high-quality JPG end up roughly the same after the platform's compression pass, but starting from a higher-quality file gives the re-encode more headroom. Export at full quality from the photobooth and let Instagram do its own compression — never pre-compress to "save space".
Colour profile matters too. Instagram assumes sRGB. If your export tool defaults to Display P3 (some Mac apps do), colours will shift once uploaded. Force sRGB on export when the option exists.
Dimensions cheat sheet
- Stories / Reels: 1080 × 1920, safe zone 1080 × 1420 centred.
- Feed portrait (tallest): 1080 × 1350 (4:5).
- Feed square: 1080 × 1080 (1:1).
- Reels cover on the grid: visible region is 1080 × 1350 cropped from the Reel's 1080 × 1920 first frame.
- Profile grid thumbnail: centre 1:1 crop of whatever you post.
What not to do
- Do not screenshot the strip from your downloads folder. You lose half the resolution and any colour profile metadata.
- Do not let Instagram auto-crop. The auto-crop always picks the centre, never the faces.
- Do not add a 200-pixel watermark across the bottom of the strip. The strip already is the watermark.
- Do not upload multiple copies of the same strip at slightly different sizes to "cover all surfaces". Post once, well-composed, on the surface that suits it.
Frequently asked questions
What size should I export from FLASHFRAME for Stories?
Use the built-in "Story" export. It renders at 1080 × 1920 with the strip centred inside the safe zone.
Can I post a horizontal strip?
Yes, but rare. A horizontal strip works well as a single feed post at 1080 × 566 (1.91:1), which is Instagram's widest landscape ratio. Beyond that it gets cropped.
Does Instagram support GIFs?
Not directly. Uploading a GIF converts it to a short muted video. If your strip is a GIF, export it as MP4 first for better quality after the conversion.
Why does my strip look darker after uploading?
Instagram re-encodes and applies its own contrast curve. Bright, contrasty exports survive the re-encode better than muted or low-contrast ones. If a look matters, boost contrast slightly before uploading.
Should I use the "high-quality upload" toggle in Instagram settings?
Yes. It is off by default. Turn it on in Settings → Data usage and media quality → Upload at highest quality.
Further reading
- The FLASHFRAME guide on exporting for Instagram Stories.
- Instagram's official Help Centre article on supported photo and video dimensions.