Instagram grid preview tools

What a preview has to get right

The bar is lower than people assume and most tools clear it. It is worth knowing anyway, because the ones that do not clear it fail in ways that look fine on screen.

• Square tiles, cropped as Instagram crops. A profile shows squares. A preview of uncropped images tells you the feed looks balanced when it does not.
• The feed’s order. Newest first, by scheduled date — not the order you happened to add things in.
• Carousels and Reels marked. They sit differently on a real profile, and a preview that renders them as ordinary tiles is quietly wrong.
• Reflow. A profile is three across on a phone and wider on the web. A preview locked to one column count is judging an arrangement nobody will see.
• Change, immediately. Arranging a month means trying things. A preview that needs a refresh button breaks the loop it exists for.

Kind one: a phone app you load pictures into

Tools like UNUM are built for arranging: drag images around a grid until the feed looks right, with helpers such as a colour map showing the dominant tones across the feed, and publishing from the same app.

What you give up. The arrangement lives in the app. If the team’s calendar is elsewhere — a shared database, a brief, a client’s approval column — the app knows nothing about it, and the two drift apart the moment somebody moves a date.

Who it suits. Solo creators who work from a phone, whose plan is a folder of pictures rather than a calendar, and who want the arranging to be the enjoyable part. For that person this is the best kind of tool, and nothing on this page beats it.

Kind two: the preview inside a scheduler

Later’s visual planner, Planoly and Metricool’s feed preview all show a planned feed inside the scheduler itself, next to the calendar and the analytics. Because the scheduler already holds the media and the dates, the preview is accurate by construction.

What you give up. Nothing, if the scheduler is your calendar. Everything, if it is not: the plan has to be uploaded and retyped into the tool before the preview can be right, and it is the retyping — not the previewing — that people quietly stop doing.

Who it suits. Teams who are happy for the scheduler to be the single home for content. That is a perfectly good way to work, and the scheduler comparison goes through those tools properly.

Kind three: a gallery view you hoped was a preview

Notion’s gallery view and Airtable’s gallery both arrange records as cards with a picture on top, and both are frequently pressed into service as a feed preview. They are free, already there, and not accurate: the tiles are not square, the order is the view’s sort rather than the feed’s, nothing crops, and a carousel looks exactly like a single post.

A gallery view is close enough to look like a preview and not close enough to make a decision with.

Kind four: a preview of the calendar you already keep

This is what Ninecast is. You paste one link into the Notion page or Airtable base that holds your content calendar, and a real three-across Instagram grid renders inside it, built from the rows already there — cropped as Instagram crops, ordered by the date each post is scheduled for, carousels counting their slides, Reels playing on hover, reflowing the way a profile does. Drag one tile onto another and the two swap dates, which is written back into your own database.

Most previews are a separate app you paste your plan into. This one is a preview of the plan you already have.

The preview is free forever and never switches off for not paying. The part that costs money is what happens next: when a row’s date arrives, the post publishes to Instagram, and the permalink and the results come back into the row. Ninecast is multi-platform, so the same plan can post to Instagram, LinkedIn, Pinterest and TikTok.

Choosing between them

Ask where the plan lives and the answer falls out. A folder of pictures on a phone: use a phone app. A scheduler that is already the calendar: use its planner. A Notion database or an Airtable base that a team keeps up to date: preview that, rather than copying it somewhere to be previewed.

The free previews are the Notion one and the Airtable one; what it looks like with publishing attached is on the Notion Instagram grid preview that also posts. Before you trust any preview with an awkward image, the free crop checker shows what Instagram will do to it.