Slicer - Support

Cut a photo into equal parts for carousels, tall posts and profile grids.

Free on the App Store for iPhone and iPad.

Slicer does one thing: it cuts a photo into equal parts. Rows and columns divide the whole photo - columns make a carousel you swipe, rows make a post you scroll. The social formats instead lay a grid of a fixed shape over the photo, so the parts come out square, 4:5, 3:4 or 9:16 whatever the photo is. You see every cut drawn on the photo before you confirm, the parts are cut from the original pixels without resampling, and each cut photo stays in the gallery so you can save, share or cut it again later. Everything happens on your device - no account, no network, no tracking.

Frequently asked questions

How do I cut a photo?

Tap Select Photo and pick a picture, drag one onto the app from Photos, Files or any other app, or open a photo with Slicer from its share sheet. Then choose a format. Rows and Columns divide the whole photo into 2 to 6 equal parts. Instagram, Threads and TikTok give you a grid in that network's shape, which you move and resize on the photo to choose what goes in. Either way the cuts are drawn on the photo as you change them - tap Cut when it looks right. Portrait photos suggest rows, landscape photos suggest columns, and your last choice is remembered.

Rows, columns or a social format - which one do I need?

Columns for a carousel people swipe through sideways; rows for a tall post people scroll from one part to the next. Both use the whole photo, in whatever shape the photo already is. Pick a social format when the parts have to come out in a particular shape instead - a square or 4:5 carousel, a 9:16 slideshow, or the three-across mosaic of an Instagram profile. In every format all parts have exactly the same size, so they line up seamlessly when posted in order.

Which social formats are built in?

Five. Instagram 1:1 and Instagram 4:5 are carousels of 2 to 6 parts: Instagram crops every slide to the ratio of the first one, so equal tiles stay seamless across a swipe, and 4:5 buys the most height in the feed. Instagram Grid is the profile mosaic - 3, 6 or 9 parts, three across, in the 3:4 shape the profile grid now uses rather than the square older tools still cut for it. Threads 3:4 is 2 to 6 parts, tall in the feed without being cropped further. TikTok 9:16 is 2 to 6 parts for a photo mode sequence.

What size do the parts come out?

A format is a shape, not a pixel size. The pixels come from your photo and from how large you make the grid on it, so the same format gives 4000 px parts from a panorama and 900 px parts from a phone snapshot - both exactly the right shape, and neither of them resampled. The size of each part is shown on the photo while you place the grid.

Why is there no X, Facebook or LinkedIn format?

Because none of them shows a sequence of images the way a carousel does. X, Facebook and LinkedIn lay several images out as one collage and crop each position differently, so parts cut to meet each other never do. Pinterest carousels are a desktop advertising flow, and Snapchat turns a multi-image post into separate snaps. For those, one whole image usually works better than a cut one.

Do the parts lose quality?

No. Parts are cut from the original pixels, nothing is scaled or recompressed by Slicer. Photos with an alpha channel are saved as PNG, everything else as maximum-quality JPEG. Rows and columns cover the whole photo, so that every part comes out exactly equal, a photo whose size does not divide evenly loses the last row or column of pixels - at most five of them. A social format is a grid you place on the photo, so what falls outside the grid is not in the result: you choose what it keeps while you position it, and the rest of the photo is left untouched in your library. Social networks recompress images on upload, but that happens on their side.

Why doesn't Slicer show my photo library?

Because it never reads it. Slicer uses the system photo picker, so you choose a photo without granting the app access to your library. The only permission it ever asks for is add-only access, and only when you save parts to Photos.

How do I save or share the parts?

Save All writes every part to Photos in one tap; Share All opens the share sheet with all parts at once, in order. Both sit under the parts on a phone held upright and move into the navigation bar wherever the screen is short of height - on iPad, or on a phone turned sideways. The round button on a single part saves that part only; long-press a part to save or share it on its own, or drag it straight into another app.

Where do my cut photos go?

Every cut photo stays in the gallery with a thumbnail, the format it was cut in, how many parts came out and the date. Open it again anytime to save, share or cut it again - Cut Again reopens it in the format it was cut with. Long-press a card for Cut Again, Save All, Share All and Delete. A delete can be undone straight away - from the Undo in the message that appears, with Cmd-Z on a keyboard, or by shaking the device.

Can I use Slicer from Shortcuts?

Yes. The Cut Photo action takes an image and returns the parts as files, with direction and number of parts as parameters. You can also ask Siri to cut a photo with Slicer, in English; the spoken phrases are not translated yet, so in the other five languages use the action from the Shortcuts app. It does the rows and columns cut only - the social formats need the grid placed on the photo, so they live in the app. Cuts made this way are not added to the gallery.

How do I delete everything?

Delete each photo from the gallery, or delete the app - all of its data goes with it. A photo you delete is held aside so the delete can be undone, and is erased for good the next time Slicer starts. Parts you already saved to Photos stay in Photos.

How accessible is Slicer?

Every control has a VoiceOver label, and saving, cutting and deleting are announced rather than only shown - the main action never finishes silently. Each editor gesture also exists as a named action, so Voice Control and Full Keyboard Access reach the same things a touch does, and every target is at least 44 points. Reduce Motion, Reduce Transparency, Increase Contrast, Differentiate Without Color and Smart Invert are all honoured; your photos are never inverted. Text follows Dynamic Type up to the largest accessibility size, checked on iPhone and iPad. The full picture, including what is not done yet, is on the accessibility page.

Which devices are supported?

iPhone and iPad running iOS 17 or later, in light and dark appearance. Available in English, Ukrainian, German, French, Spanish and Japanese.