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Free tool

Free Instagram post mockup generator

Drop in your image and caption and see your Instagram post the way the feed shows it, with your username, likes and the "… more" cut. Download it as a PNG for a client, a deck or your portfolio.

Profile, image and engagement

Profile photo

Post image

Engagement

Everything stays in your browser. Your text and images are never uploaded.

alexmorgan
Add a post image

248 likes

alexmorgan Behind the scenes of our new studio ✨ Three weeks, two very tired painters and one wall we repainted four times. Swipe to see the before and after, and tell us which corner is your favourite 👇

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Just now

  • Instagram Fits before the cut193 / 2,200
  • LinkedIn Fits before the cut193 / 3,000
  • X (Twitter) Fits before the cut195 / 280
  • Threads Shows the whole post193 / 500

LinkedIn and Instagram cut by lines, so the cut moves with screen width. X counts like X does: links as 23, emoji as 2.

Schedule it with FeedHive

How to make an Instagram post mockup

  1. 1Upload your post image. It's shown at 4:5, the tallest size Instagram's feed allows.
  2. 2Type or paste your caption, and set your username and profile photo.
  3. 3Set the likes and comments.
  4. 4Press Download PNG to save your Instagram post mockup.

Where Instagram cuts your caption

In the feed, Instagram shows your username and the start of your caption on two lines, then "… more". On a phone that's about 90–125 characters of caption with no line breaks, minus the length of your username. A line break ends the visible part early, so put your hook in the first line.

The Instagram character limit for captions is 2,200, according to Meta's developer documentation. The Instagram caption preview above tracks it as you type, and shows the cut on a phone and on desktop.

Why the first lines matter most

Feeds show the start of a post and hide the rest behind a "more" link. Most people decide whether to tap it from the lines they can already see, so a strong opening does most of the work.

LinkedIn and Instagram cut by lines, not by a fixed number of characters. A line break uses up a whole line, so a post that opens with three short lines can lose its third sentence below the cut. That's why the cut lands in a different place on a phone and on a desktop, and why it helps to check it before you post.

  • Lead with the result

    Put the outcome, number or claim in the first line, and the setup after it.

  • Cut the warm-up

    Greetings and "I've been thinking about…" use the lines people actually see.

  • Watch your line breaks

    Each empty line costs a full line above the cut. Use them after the hook, not before it.

  • Check both screens

    Switch between Phone and Desktop. Most people read on a phone, where the cut comes earlier.

Frequently asked questions

How do I preview an Instagram post before posting?

Upload your image and paste your caption above. The Instagram post preview shows your username, image, likes and the caption cut the way the feed does.

How many characters show before "more" on Instagram?

Instagram shows two lines, starting with your username. With no line breaks that's about 90–125 characters of caption on a phone, fewer if your username is long.

What's the Instagram caption character limit?

2,200 characters, including spaces, line breaks and emoji. The Instagram character counter under the preview shows how many you've used.

Can I use this as a fake Instagram post generator?

You can set any name, photo, caption and like count, which makes it handy for design mockups and client approvals. Please don't use it to impersonate a real person or brand.

Are my text and images uploaded anywhere?

No. The preview, the character count and the PNG download all run in your browser. FeedHive never receives or stores your text, profile photo or post image.

Is this tool free?

Yes. There's no account, no signup, no watermark and no limit on how often you use it.

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Beyond previews

Happy with how it looks? Schedule it with FeedHive.

FeedHive shows a preview for every platform while you write, then publishes to LinkedIn, Instagram, X, Threads, TikTok, Facebook and more at the best time. FeedHive AI learns your brand voice and helps you write the next post, too.

Preview and schedule in FeedHive