Instagram fills the profile grid newest-first: every post you publish lands in the top-left slot and shifts everything else one place to the right and down. So to make a split image reassemble, you upload the pieces in REVERSE reading order — the bottom-right tile goes up first, then along the bottom row, up the rows, and the top-left tile goes up last. For a 3×3 that means posting tile 9, 8, 7… down to 1. This tool labels every tile with its upload number (post #1 = the first one you publish) and names the ZIP files in that order (post-01, post-02…), so you just upload them in sequence. Do the whole run in one sitting — any Reel or normal photo posted in between drops into the grid and breaks the picture.

Instagram displays feed images up to 1080 px wide, so 1080 px square is the standard tile. A seamless 3×3 grid therefore comes from a source around 3240×3240 px (3 tiles × 1080), a 3×2 from ~3240×2160, and so on. This tool can slice at your image’s native resolution or normalise every tile to an exact 1080 or 1440 px width, using pica for a crisp downscale. Note that since 2025 the profile GRID thumbnail centre-crops each tile to roughly 3:4 portrait, so a square tile shows only its middle on the grid (the full square is visible when the post is opened) — keep faces and text away from tile edges, and use the built-in 3:4 crop guide to preview what gets hidden. These are current best estimates; Instagram changes specs without notice.

Privacy is structural. Your image is read from an in-memory object URL, drawn onto an HTML canvas, and cut into tiles entirely on your device — there is no server, upload, database, logging or CDN anywhere in the processing path. Each tile is produced locally with canvas.toBlob and held as an object URL that is revoked when you load a new image, reset, or leave the page, so nothing lingers. The tool works offline once cached, closing the tab discards everything, and the only optional network use anywhere on the site is consent-gated advertising, which never sees your photo.

This is a splitter, not a scheduler or an Instagram integration — it has no access to your account and cannot publish anything. It gives you a ZIP (or individual tiles) named in upload order, and you post them yourself from the Instagram app: bottom-right first (post #1) through top-left last. It is also not an AI or design tool: it does not generate, retouch, deskew or reflow your image — it cuts a straight equal grid. A gap/gutter trims pixels from the shared edges of neighbouring tiles (it does not add blank space), and the exported tile dimensions depend on your source resolution unless you pick a fixed tile width. Treat the layouts and 1080 px sizing as current best practice and verify on a real post.