9grid Blog

Why the feed crops landscapes, which ratios to pad to, when blur vs solid pads look intentional, and the checklist I run before posting.

Why iPhone saves HEIC, where it still breaks, JPG vs PNG after conversion, batch in the browser, and what to do if Instagram still crops.

Why RedNote nine-grid notes look sharp on desktop but soft in the app — size table, JPG vs PNG, and the five checks I run before upload.

Why Instagram rebuilds profiles from the top-left, the exact 3×3 reverse map, and the checklist I run before publishing a split set.

How to prepare Moments albums and Xiaohongshu multi-image notes without muddy seams, wrong upload order, or copy-pasted Instagram habits.

Instagram quietly crops and compresses everything you upload. Here's the 2026 cheat sheet I keep pinned — every feed, carousel, Story, and 3×3 grid size that stops your photos from getting cut off or blurred.

Most free image splitters look fine until you prepare a real campaign. Here is how 9grid fixes the pain around privacy, blurry exports, rigid cut lines, and repetitive batch work.

A friend who runs a jewelry brand on Instagram showed me her agonizing workflow. So I built a feature that processes 50 images into perfect grids in under 60 seconds.

The full write-up: multi-step Canvas interpolation, the per-tile pixel math for Instagram grids, three real mobile crashes I had to fix, and an honest account of what interpolation can't do.

Equal thirds put cut lines through noses. Drag the slice lines, check platform safe zones, then export numbered tiles so faces stay in one cell.

Ten Instagram profile layouts that still work in 2026 — when to use each, who they fit, and the mistakes that break a tidy grid.

Source size, 3×3 export, reverse posting order, and the checks that keep Instagram, WeChat, and Xiaohongshu nine-grids aligned.

Turn one photo into a seamless profile mosaic: size, slice, preview, reverse post, and the checks before you hit share.

Visual thread, five grid systems, 3×3 split sizes, reverse posting, pins, and 3:4 thumbnail crops — a publishing playbook, not a rebuild diary.

Posting single photos wasn't cutting it for me. Here are the specific pin layouts I started using to finally get traction, and how I make them.

PNG vs JPG for grid tiles: when lossless encoding is worth the file size, when high-quality JPEG is enough, and how to avoid a second compression pass.