Bases du profil Instagram et de la messagerie, et le champ unique pour lequel les acheteurs paient

Most Instagram tasks are one menu deep once you know which menu. Editing the profile lives behind Edit profile, the Facebook connection moved into Accounts Center, and save counts sit inside a post's insights on business and creator accounts. The two awkward ones are the Facebook link, where the options change with account type and region, and a crashing app, where you work down a list until something holds.

One thing worth knowing before the steps, because it reframes the first section: on this marketplace's own Instagram account shelf, a filled-in profile is not decoration. It is the attribute buyers pay a premium for, and the measurement is at the end of that section.

Changing your profile picture

The photo appears as a small circle beside every post, comment and story you make, so people recognise you from it before they read a word. Swapping it takes under a minute and your followers are not notified.

1. Open your profile and tap Edit profile.
2. Tap the current picture, or tap Edit picture.
3. Choose New profile photo, then take one or pick from your gallery.
4. Adjust the crop and save.

On a computer, open instagram.com, click your profile, then Edit profile, then Change photo, and upload a file. The crop behaves the same way.

Detail disappears in a circle that small, which is why the sizing questions dominate the search results for this. A square, high-resolution file survives the crop, a centred subject keeps its head clear of the trimmed corners, and busy backgrounds turn to mush. A headshot works for a personal account, a face you also use elsewhere works for a creator account, and a logo works for a business account only if it stays legible when shrunk. Using the same image across your accounts is what lets people match you to the profiles they already follow.

What a filled profile is worth, measured

This is the part no other guide can tell you, because it needs a marketplace to measure. On 1 September 2026 this site had 2,114 live Instagram account listings from 217 sellers, counted under the storefront's own visibility rules. Three hundred and eighty-three of them mention an avatar or a profile picture. Thirty-three of those are saying the opposite, in phrases like "account is empty, no posts, no profile picture", which leaves 350 that genuinely claim one is in place.

Comparing each seller's stock that states a photo against the same seller's stock that does not, on the eight sellers holding at least five of each, the listings with a photo are dearer inside seven of the eight, level on the eighth and cheaper on none. The multiples run from roughly one and a quarter to nearly three times that seller's own median. It is worth saying that this is measured seller by seller rather than across the whole shelf, because a shelf-wide average here mostly measures which seller happens to stock more.

The takeaway for anyone running an account rather than buying one is the same either way. The first field a stranger judges is the one the market has independently decided is the expensive part of an account.

Posting from a computer

The Instagram website handles uploads, so you can publish from the machine you edit on.

1. Open instagram.com in a browser and log in.
2. Click the plus (Create) icon in the top navigation.
3. Select a photo or video from your computer.
4. Crop, add filters, then write your caption.
5. Click Share.

That covers ordinary feed posts and Reels with no extra software, and typing a long caption on a keyboard beats thumbing it out on glass. Direct messages work on the website too, both reading and sending.

Two gaps are worth planning around. Native Story support on the website stays limited, so stories come from your phone or from a scheduler. And scheduling itself runs through business tools or a third-party product rather than the plain website, so if you batch a week at a time, compare schedulers before committing, and prefer tools built on the official API.

Connecting a Facebook page

1. Open your Instagram profile and tap Edit profile.
2. Look for Page or Connect or create under public business information, or open Settings and then Accounts Center.
3. In Accounts Center, choose to add accounts and select your Facebook account.
4. Confirm the link.

Accounts Center now runs the connection for both apps, so managing or breaking the link happens there rather than in either app's own settings. What the link unlocks is cross-posting to both feeds at once, ads that target across both platforms, shopping tags pulled from a Facebook catalogue, and one place to manage both logins.

Which of those appear varies by account type and by region, so open Accounts Center on your own account and see rather than assuming a feature is waiting. Sellers gain the most, since shopping tags need a catalogue and ads run through a Page. Mirroring one post into both feeds is the tempting shortcut, and a short rewrite per platform usually lands better than the same caption pushed twice. For what to build on top of the connection, see selling without a website and Instagram for business marketing.

Direct messages: reactions and the unread flag

To react, open the conversation, double-tap a message or press and hold it, then pick an emoji from the quick reactions; the plus icon opens the full keyboard when the defaults do not fit. A double-tap drops a heart in one motion and tapping the same reaction again removes it. The sender sees what you added, so a reaction closes the loop without a written reply, which suits group threads where a wall of short answers buries the conversation. If you answer a brand inbox, a reaction tells a customer you saw the message while you write the real one.

Marking a chat unread is the other half, and it comes with a catch that generates most of the searches about it.

1. Open your DM list, the inbox rather than a conversation.
2. Swipe left on the thread, or press and hold it.
3. Tap Mark as unread.

The thread gets its dot back and pulls your eye next time you open the inbox. It does not undo anything on the sender's side: once you have opened a message, they keep seeing it as seen, and the flag changes only your own view. If you want no read receipt at all, the only route is not opening the message. Used as a to-do marker, the dot turns an inbox into a queue, and personal accounts get the same option as business ones.

The follower and engagement data you can actually see

Your followers list has no guaranteed order, and it can differ between phone and desktop, so scrolling to the top will not reliably tell you who followed you this morning. The activity or notifications tab is the dependable one because it logs follows as they arrive; it will not rebuild a full history, and it does catch new ones. Insights, on a business or creator account, answers the wider question of net gains and losses over a period. If the count climbs while nothing else moves, read about inactive followers before drawing conclusions from the trend.

Saves work differently from every other metric. Instagram keeps the identities of savers private, from you and from everyone else, the same way your own saves stay hidden from the accounts you saved. The count belongs to you: switch to a business or creator account, open a post, tap View insights and read the number beside the bookmark icon. A missing insights option means you are still on a personal account.

Poll results are the exception where you do get names. Add a Poll sticker from the story sticker tray, write the question, edit the two options, place it and share; tapping your own story afterwards shows the vote split and the list of accounts behind each option. Two choices are the limit, so use a quiz sticker when the question needs more. Before you treat a poll result as a decision, read what a story poll number is actually worth, because it is one of the few Instagram figures that can be bought outright.

When the app keeps crashing

Check whether Instagram is down for other people first. A status tracker or the company's own social channels will show a widespread outage, and waiting is the fix in that case. When the outage boards are clear the problem is on your device, and this list runs quickest to most thorough.

Fix	Why it helps	Effort
Force close and reopen	Clears a stuck session	Seconds
Check your connection	Weak data freezes the app	Seconds
Update the app	Old builds carry known bugs	A minute
Restart the phone	Frees memory and resets services	A minute
Clear the cache	Removes corrupted temporary data	Two minutes
Reinstall	Fixes a broken install	Five minutes

Most crashes stop in the first few steps. On Android, open your phone's app settings, find Instagram and clear its cache, then its storage if the crashes continue. On iPhone, offloading or reinstalling does the same job. A reinstall costs you the download and nothing else, since the account lives on Instagram's servers. Storage pressure causes crashes too, so delete apps you stopped opening and clear old video files before you try anything more drastic. If the crashes survive the whole list you may be waiting on a patch, in which case keep the app updated and publish from the website in the meantime.