Instagram Grid Generator
Upload an image
Drag and drop, or click to select
PNG, JPG, WEBP up to 10MB
Loved this tool? Stop copying and pasting to schedule.
Connect 14+ channels (including Bluesky, Threads, and Reddit) in one dashboard. Schedule your content once, let Postonus auto-repurpose it native to every network.
Why people use it
- Turn one artwork into a feed-ready 3x1, 3x2, or 3x3 Instagram layout.
- Preview the split before exporting so important text and faces do not land on seams.
- Save time on launch graphics, portfolio drops, and campaign teasers.
Suggested flow
Upload the source
Start with the image you want to spread across the feed and choose the grid size that matches the campaign.
Adjust the crop
Nudge the framing until the most important visual details sit safely inside each tile.
Export and publish
Download the slices in order, then upload them to Instagram in sequence for a clean final grid.
About this tool
A simple way to build cleaner multi-post Instagram layouts
The grid generator helps creators and small teams prepare coordinated feed reveals without hand-cutting assets in design software every time.
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Questions
Frequently asked questions Everything the first evaluation usually needs.
- What if I'm already on Buffer / Pallyy / Publer?
Keep them. Run Postonus side-by-side for 30 days. Put your 3 best posts into a Growth Workflow. If it isn't earning its keep, cancel us — not them.
- Does the AI write my posts?
No. You write the post. Postonus's AI re-fits your draft into each platform's native shape — character limits, tone, hashtag norms. You review every variant before it publishes. Voice profile keeps it sounding like you.
- Which platforms do you support?
Fourteen: Instagram, TikTok, YouTube, LinkedIn, Facebook, X, Threads, Pinterest, Bluesky, Reddit, Telegram, Discord, Google Business Profile, and Tumblr. WhatsApp Groups support is in beta.
- How does the 14-day trial work?
Pick any plan. We don't ask for a card up front. At day 14, add a card or downgrade. We email you on day 12 to remind you.
- Can I import from another tool?
Yes. Bulk CSV import handles up to 50 posts per file (multiple files OK). Direct-from-Buffer import is on the Q4 roadmap.
- What happens if a post fails to publish?
Workers retry with exponential backoff. Failures show up in the Activity Feed with one-click retry. We email you only for unrecoverable failures (e.g. revoked token).