The short version: open Instagram, tap Create, the plus sign at the top of your feed, choose POST at the bottom, pick your photo, tap Next twice, write the caption, tap Share. The flow is the same on an iPhone and on an Android, as the Instagram Help Center shows. We checked the button names there on September 18, 2026.
If that was all you needed, you can stop here. The rest of this page covers the variations that bring people here: several photos in one post, a Reel, a Story, posting from a computer, and the one that actually holds you up, which is what to write once the photo is ready.
Post a photo, step by step
- Tap Create. It is the plus sign in the top left corner of your feed. Swiping right on the feed opens the same screen.
- Choose POST. It sits at the bottom of the screen, in the same row as Story and Reel, and the difference between the three is further down this page.
- Pick the photo. Your camera roll opens. Tap the photo you want, or use the camera icon to take one on the spot.
- Adjust the frame. Pinch to zoom, drag to move the subject. What you see in the box is what gets published, so check that nothing important is cut off at the edges.
- Tap Next, then edit if you want to. This screen has the filters and the sliders for brightness, contrast and warmth. You can skip it entirely.
- Tap Next again and write the caption. This is also where you tag people, add the location and turn sharing to Facebook on or off.
- Tap Share. It shows up on your profile straight away.
If you are not ready to publish: on the caption screen, tap Back until you leave the editor, then tap the X and Save draft. The next time you tap Create, it is waiting under Drafts. Two catches, according to the Help Center page on drafts: the draft lives only on that phone and is lost if you uninstall the app, and Instagram only offers to save it once you have changed something, such as a filter, caption, location or tag.
Post several photos in the same post
This is the carousel, the post people swipe sideways. After tapping Create and POST, tap SELECT MULTIPLE and pick up to 20 photos and videos, the limit given on the Help Center page on carousels.
Two things worth knowing before you tap them:
- The order you tap is the order they appear. Instagram numbers each one as you select it, so the first photo you tap becomes the cover. If you get it wrong, hold a photo and drag it to a new spot before you publish.
- Photos and videos mix freely. A carousel can be four photos and a short clip, and the clip plays when the reader swipes to it.
From there the flow is the same as a single photo: Next, edit, Next, caption, Share. The filter you pick on the edit screen applies to all of them at once unless you tap a photo to change it on its own.
In our reference set of 476 carousels from 118 small-business and niche profiles, collected on August 8, 2026, 92 mix photos and videos, and the number of items runs from 2 to 20. A body shop in northern Brazil showed a car paint job in 19 items, 13 videos of the process followed by 6 photos, and the post drew 179 comments.
Post a Reel
Tap Create and choose Reel. You either record inside the app, holding the button to film in takes, or you tap the gallery icon in the corner and bring in a video you already shot.
The editing screen is where Reels differ from a normal post. You get the audio library, text on screen, stickers and the timeline where you trim each clip. When the video looks right, tap Next, write the caption and share. A Reel can run up to 20 minutes, but the Help Center page on recording reels warns that reels longer than three minutes are not recommended to new audiences.
One habit that saves you later: film in vertical, holding the phone upright. A video shot sideways gets black bars or a crop that cuts heads off, and there is no fixing that after the fact.
Post a Story
Tap Create, or swipe right on the feed, and scroll to Story at the bottom. Pick a photo or video, add text, stickers, a poll or a link, then tap Your Story at the bottom left to publish.
Stories disappear from your profile after 24 hours unless you add them to your highlights, as the Help Center page on stories explains. That is exactly why they are easier to use. A photo of the work you finished this afternoon does not have to be good enough to sit on your grid forever.
Post from a computer
Go to instagram.com in any browser, log in, click Create in the left-hand bar, then Post and Select from Computer. You crop, type the caption and publish, the same as on the phone. The Help Center lists JPG, PNG and HEIC as the accepted photo formats.
It is the faster route when the photos are already on the computer, and a long caption written on a keyboard comes out better than the same thing thumbed out on a phone. On a computer, a video goes up as a reel, but you can only pick the cover and trim the start and end, with no recording and no timeline. Stories cannot be posted from the browser at all. That is why those two are still better done on the phone.
What to write in the caption
The caption is where a lot of people freeze, and the reason is often that they are trying to write something clever. A caption that works for a small business does three plain things:
| The line | What it does |
|---|---|
| The first sentence | Says what the post is about, because the rest is hidden behind "more" |
| The middle | Gives the detail, the context or the story behind the photo |
| The last line | Tells the reader what to do: comment, save it, send a message |
The caption on that body shop post follows this order: "Funilaria e pintura do polo" (body work and paint on the Polo) as the first line, the process and the partner brands in the middle, and an invitation to ask for a quote, with the phone number, at the end.
You can edit a caption after publishing, so a typo is not a reason to delete the post and start over. What you cannot swap is the photo itself.
Fixing a post that is already up
- Wrong caption or a typo. Tap the three dots on the post, choose Edit, fix it, save. The post keeps its comments and its likes.
- Wrong photo. There is no swapping it. In a carousel, Edit lets you remove a photo or video and change the order, but not add anything new. With a single photo, delete and post again, or leave it and move on.
- You want it off the grid without losing it. Archive it. The post disappears from public view, keeps its likes and comments, and you can bring it back later.
Scheduling a post for later
With a public account, the caption screen has More options. Turn on Schedule this post, pick the date and time, and Instagram posts it for you. The Help Center page on scheduling gives a limit of 30 days ahead and 25 posts a day. The full steps, with the exceptions, are in how to schedule Instagram posts.
It is worth doing if you tend to have a burst of energy on a Sunday and nothing left by Wednesday. Which hour to pick is a separate question, and your own profile has the answer: see the best time to post on Instagram.
The part that actually takes the time
Everything above is buttons, and buttons are the easy half. The hard half arrives on a Tuesday at lunchtime, when you have five minutes free, you open the app to post something, and you have no idea what.
That is the gap people fall into. The steps were never the problem, and knowing them does not tell you what today's post should be. If you recognize that, two pages here go straight at it: what to post when you run out of ideas, and bio lines that say what you do, because a good post sends people to a profile that has to explain itself in a few seconds.
ZapPost delivers the carousel, the Reels script and the caption ready to go. No writing prompts, no Canva, no new tool to learn. You review and publish.
Frequently asked questions
Why does my photo look blurry once it is published?
Instagram stores photos at a width of up to 1080 pixels, according to the Help Center page on image resolution, and sizes down anything larger. The damage gets worse when the file was already squeezed once. The usual culprit is sending the photo to yourself on WhatsApp to get it from the computer to the phone: WhatsApp offers Standard or HD quality, so check that it is set to HD, which you can make the default under Storage and data. Or move the file with a cable, a cloud folder or email, and upload it from the gallery.
The plus sign is not where this page says it is. Now what?
The Help Center puts Create at the top of the feed. If it is not there, swipe right on the feed, which opens the same screen, or go to your profile and tap the plus sign in the top right corner. If none of that shows up, update the app in the App Store or Play Store.
What is the difference between a post, a Reel and a Story?
A post stays on your profile until you remove it, and it is the one someone finds months later. A Reel is vertical video, and Instagram itself, when it explains how it ranks content, says most of what people see in Reels comes from accounts they do not follow. A Story vanishes after a day, which makes it the low-pressure one for whatever happened at work today.
Do I need hashtags for the post to work?
A few that describe your service and your town give someone browsing that tag a way to land on you. Since December 2025, Instagram accepts at most five hashtags per post, as the Help Center page on hashtags and Social Media Today report. Write the caption first, then add the handful that genuinely describe the post.