Instagram post previewer
An Instagram post previewer shows you the post Instagram will actually render, not the one you typed. Paste your caption, drop your image in, and you get the feed card, the carousel, the Reel or the Story with Instagram’s own chrome sitting on top of it.
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Select accounts to see live preview
What Instagram does to your post after you hit share
The caption is the first surprise. Instagram allows 2,200 characters and shows roughly the first 125 of them before a "more" link, so the sentence that has to earn the tap is whichever one happens to land in that first line and a bit. Everything you wrote after it is behind a tap most people never make.
The second is the crop. Feed images go up to 4:5, and a carousel is stricter than that: every slide is shown at the ratio of the first one. Put a portrait slide first and a square slide fourth and the fourth gets trimmed to match. Instagram also moved the profile grid to portrait in 2025, so the thumbnail your grid shows is not the square that old templates assume.
The third is the format. A single video is no longer a plain feed post on Instagram. It becomes a Reel, which means it gets a full screen canvas with a username, a caption, an audio ticker and an action rail painted over your video. Anything you placed in those areas is covered.
How to preview an Instagram post here
Write the caption in the box on the left and drop in the image or video you plan to post. The Instagram card on the right updates as you type. Add a second image and it becomes a carousel; add one video and it becomes a Reel, because that is what Instagram would do with the same upload.
The Story and Reel views are the ones worth looking at hardest. They put your media behind the real interface, which is the only way to tell whether your headline is sitting under the caption line or the send field. A downloaded safe zone template cannot do that, because it does not know how long your caption is.
Before you publish
- Front-load the caption. Say the thing in the first 125 characters and treat everything after the fold as detail for people who already care.
- Decide the carousel ratio on slide one. Every other slide is cropped to match it, so a mixed deck loses edges you did not choose to lose.
- Keep hashtags out of the first line. They eat the part of the caption people actually read.
- Check the Reel view even for a normal video post. Instagram publishes single videos as Reels, so the Reel is the layout you are really posting.
Preview a post for another platform
X (Twitter) post previewerAn X post previewer shows the tweet as a timeline renders it: your text at the real width, the photo grid X builds from your images, and the engagement row underneath.Open it
Facebook post previewerA Facebook post previewer renders your post the way a Page timeline will: your text above the media, the album grid Facebook builds from however many photos you attached, and the Reel or Story canvas with Facebook’s own overlays on top..Open it
LinkedIn post previewerA LinkedIn post previewer renders your post as a feed will: your text with the "see more" fold in it, your image inside LinkedIn’s own canvas, and the reaction and comment row underneath.Open it
YouTube post previewerA YouTube post previewer shows the two things a viewer sees before they watch anything: the thumbnail with your title beside it, and the Short with YouTube’s interface over the top.Open it
TikTok post previewerA TikTok post previewer puts your video or your photos behind the real TikTok interface: the caption at the bottom left, the action rail down the right, the sound ticker, and the dots if you are posting a photo carousel.Open it
Threads post previewerA Threads post previewer renders your post the way the Threads app does: the username line, your text, the media carousel, and the like and reply row underneath.Open it
Bluesky post previewerA Bluesky post previewer draws your post as the app does: the display name and the domain handle, your text, the image grid, and the reply, repost and like row.Open itInstagram Reels safe zone checkerThe Instagram Reels safe zone is the part of a 1080x1920 frame that Instagram’s interface does not sit on.Open itInstagram Stories safe zone checkerThe Instagram Stories safe zone is the middle of a 1080x1920 frame, between the progress bars and profile row at the top and the reply field at the bottom.Open itOr preview every platform at once with the full post previewer.
This tool is free, forever. No accounts, no paywalls, no catch.
I build these solo. If you want to support my work, donating a coffee would be highly appreciated! ☕
Frequently Asked Questions
Everything you need to know about Instagram post previewer from PublishQ
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— me 👋
Hi, I'm Alexandro 👋
I left my Software Engineer role at Amazon to build tools that solve real problems — the kind big companies ignore because they read spreadsheets instead of using their own products.
I was spending over an hour daily just scheduling 2 shorts across 3 platforms — logging in, reformatting, uploading one by one. That felt broken. So I built PublishQ . Now I create 4 shorts in 3 minutes and schedule them to 4 platforms in under 30 seconds.
PublishQ is bootstrapped. No investors, no vanity metrics. I build what actually helps you — because I use it every day myself.
Thank you,
Alexandro
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