AI Instagram Post Generator: Posts, Stories and Covers
Written by Mordechai Peretz · Updated: October 7, 2026 · 6 min read
An AI Instagram post generator turns one sentence about your business into a finished design with the text already in it. With the Create tool in NeedPS you write what to say, tick the sizes you need, and get a square post, a story, a Facebook cover and website banners in one matching design.
A business owner who needs a post usually has three options: pay a designer for every post, learn design software, or use a template that looks like everyone else's. An AI graphic maker adds a fourth.
The part that needs care is the text inside the image. Image models draw letters rather than type them, so words can come back misspelled. NeedPS reads every graphic back and redraws it when a word comes out wrong.
The sizes Create makes
The Facebook cover is the confusing one. Facebook shows a page cover at about 820x312 on a computer and 640x360 on a phone, which are two different shapes, not one shape at two sizes. A file made for one gets cropped on the other. The fix is to keep all text and the logo in the central area that survives both views, which is how Create lays it out.
- Instagram and Facebook post: 1080x1080, square
- Story: 1080x1920, full-screen vertical
- Facebook page cover: 1640x720
- Website banner for desktop: 1600x900, wide
- Website banner for mobile: 1086x1448, tall, because a narrow screen crops a wide banner
- Website popup: 1200x1200, shown whole and never cropped
Why make every size at once
The common mistake is to design a square post and then crop it into a story. It almost always goes wrong: the headline gets cut, the logo falls out of the frame, and a composition built for a square falls apart when it is stretched tall.
A design built for each size arranges the elements differently in each one, while keeping the same look: the same colors, the same fonts, the same idea.
In Create you tick all the sizes in one request and they are made together, so a whole campaign comes out consistent without redesigning each size.
How to write a post that works
- 1
One message, not three
A post with a sale, opening hours and an address is a post nobody reads. Pick one thing to say.
- 2
Say it plainly and specifically
"Buy one get one free on all gelato until the end of the month" beats "a wide range of attractive offers".
- 3
Paste your website address
The colors and style are matched to your existing brand instead of looking generic. You can add your logo and product photos too.
- 4
Pick every size you need
Post, story, and if you have a website, banners and a cover, all in one request.
- 5
Read the text before you publish
Zoom in and check every word, especially your business name, prices and phone number.
Spelling mistakes: the risk that is easy to miss
An image model paints letters as shapes instead of typing them, so a word can come back with a missing or swapped letter that looks right at a glance. Long words, names and numbers are the most likely to break.
On a business post that costs credibility: a misspelled business name or a wrong digit in a phone number does direct damage.
NeedPS reads every finished graphic back letter by letter, compares it with the text you asked for, and redraws it when a word comes out wrong. The number of redraws is limited, so it is still worth reading the final graphic yourself before you publish or pay to promote it. If you would rather hand the job to a person, a human designer can help from inside the app.
Frequently asked questions
How do I make an Instagram post with AI for free?
Open the Create tool in NeedPS, choose post and story, write what you want to say and get a finished design. You get free edits to start, as a guest and when you sign up, and they work on Create too. No design skills needed.
What size should an Instagram post and story be?
Create makes square posts at 1080x1080 and stories at 1080x1920. Make both from the start rather than cropping the post into a story, which cuts the headline and breaks the layout.
Will the design match my brand colors?
Paste your website address and the colors and style are matched to what you already use. Without it, a design direction is chosen to suit your type of business.
Can I write the post in a language other than English?
Yes. Write it in the language your customers read. The app's menus are in English, and the text check runs on the language you wrote.
What size is a Facebook cover?
Create makes Facebook covers at 1640x720. Facebook shows the cover in different shapes on a computer and on a phone, so the text and logo are kept in the central area that stays visible in both.
Is Create included in every plan?
No. Free edits work on Create, and after that it is available with credit packs and with the plan that includes it. Check the plan details in the app.
Want to try it on your own photo?
Download NeedPS, upload a photo and type what you want, in any language. That is all.
Download NeedPS free