TikTok and Instagram SEO: How to Get Found in In-App Search
TikTok and Instagram search reads words: the ones in your profile name, your bio, your captions and your videos. Here is where to put them, how to find the terms your audience actually types, and what to skip.
By Hadrien Bonato-Pape · · Social platforms
TikTok and Instagram SEO means putting the words your audience types into the search bar in the places these apps actually read: your profile name, your bio, your captions, and on TikTok, your on-screen text and what you say out loud. It is not a secret trick. Instagram documents it plainly, and TikTok even ships a tool that shows what people search for.
Plenty of people use TikTok and Instagram like a search engine: "brunch Austin," "dry skin routine," "Father's Day gift ideas." If your posts do not contain those words, they do not surface, even when they answer the question perfectly. Getting found inside a social app follows the same logic as getting cited by an AI assistant, which we cover in our pillar guide on GEO: getting recommended by ChatGPT: say clearly, in your customer's words, what you do and who it is for.
Your customers' words, where the app reads them
- Write down your customers' words Autocomplete, Creator Search Insights (TikTok, select regions), customer questions, accounts that already rank.
- Put them on your profile Profile name: what you do, plus your city if you're local. Bio: what you do, for whom, where.
- Name the topic in captions The topic in the first sentence; hashtags in the caption, not the comments.
- On TikTok, say it too On screen and out loud: the video still makes sense with the sound off.
- Compare in a month The share of views from search, where the app breaks it down.
How does Instagram search pick its results?
Instagram published an explanation of its search engine, Breaking Down How Instagram Search Works. It lists three signals, in order of importance:
- The text typed into search, described as "by far the most important signal." Instagram matches it against usernames, profile names, bios, captions, hashtags and places.
- The searcher's activity: accounts they follow, posts they viewed, past interactions.
- Information about the results themselves: popularity signals such as clicks, likes, shares and follows.
You cannot move the second and third signals overnight. The first one is entirely yours: if a word is written nowhere, Instagram has nothing to match. The same article gives four concrete tips:
- a username and profile name related to what you post;
- keywords and a location in your bio if you are a local business;
- keywords and hashtags in the caption, not in the comments;
- staying within the rules, since accounts that break them may show up lower in results.
That comment point matters. The habit of dropping hashtags in the first comment to keep the caption clean removes them from where Instagram says it looks. For how many hashtags to use and which ones, see hashtags: how many, which ones, by platform.
Instagram search's three signals
- 1. By far the most important The text typed into search Matched against names, bios, captions, hashtags and places. Entirely yours.
- 2 The searcher's activity Accounts they follow, posts they viewed, past interactions.
- 3 The results themselves Popularity: clicks, likes, shares and follows.
How does TikTok figure out what a video is about?
TikTok says less about search than about recommendations. On its page How TikTok recommends videos #ForYou, the company lists "video information," which "might include details like captions, sounds, and hashtags," among the factors it uses. As of October 2026, TikTok does not publish an official list of the fields its search bar reads, nor how it weighs captions against on-screen text or speech. Be skeptical of precise claims like "the first line counts double": TikTok does not document them.
What TikTok does document is Creator Search Insights. According to TikTok, it surfaces frequently searched topics, sortable by category or by the kind of content you make, with a filter for "content gaps": topics people search for often that few videos cover. It is available in select regions; you open it by typing its name into the app's search bar.
The safe approach on TikTok is to state the topic everywhere it reads naturally: in the caption, in the on-screen text and out loud. You are not betting on any single field, and the video still makes sense to someone watching with the sound off.
TikTok and Instagram SEO: where should each keyword go?
| Field | TikTok | What to put there | |
|---|---|---|---|
| Username | Read by search (documented) | Visible and searchable as an account | Your brand name, plus what you do if the name doesn't say it |
| Profile name | Read by search (documented) | Shown at the top of the profile | "Name + what you do + city" if you are local |
| Bio | Read by search (documented) | Shown on the profile | What you do, for whom, where |
| Caption | Read by search (documented), 2,200 characters max | Listed as video information | The topic in plain words in the first sentence |
| Hashtags | In the caption, not the comments | Listed as video information | A few specific terms rather than a generic list |
| On-screen text and speech | Not documented for search | Not detailed by TikTok | The same topic, said simply; it helps viewers either way |
The 2,200-character caption limit, with at most 30 hashtags and 20 @ mentions, comes from Meta's Instagram API documentation (read in October 2026).
How do you find the words your audience actually types?
The trap is using industry vocabulary. A florist talks about "seasonal arrangements"; the customer searches "cheap birthday flowers." Four free sources, no third-party tool needed:
- Autocomplete in both apps. Type the start of your topic in the search bar and write down the suggestions. These are phrasings the app already knows.
- Creator Search Insights on TikTok, where available, to spot topics people search for that few videos cover.
- Your customers' questions. DMs, comments, Google reviews, questions at the counter: write down the exact words.
- Accounts that already rank. Search your topic and look at how the top results phrase their name, bio and captions. To do this methodically without copying, see how to run a social media competitor analysis.
Then group the terms by topic and tie each topic to one of your content pillars, so the list actually gets used.
How do you write a findable caption that doesn't read like a robot?
A caption written for search still has to be a caption written for people. The working rule: name the topic in the first sentence, in your customer's words, then write normally. Take a fictional brand, Copper Kettle Roasters, a coffee roaster in Portland, Oregon.
Before: "New arrival this week! We love it. Come try it."
After: "Ethiopian whole bean coffee, roasted in Portland: we just cupped the new lot, think red berries and citrus. Here's how to brew it in a French press."
The second version names the product, the origin, the city and a use. It answers four possible searches without a single keyword list. On TikTok, the same video would show "Ethiopian coffee: the French press recipe" on screen, and the person would say it in the first seconds. For first-line formulas by format, our 30 hook examples by platform give you templates.
The same caption, before and after
Before
- "New arrival this week! We love it. Come try it."
- No word a customer would search for
After
- The product: whole bean coffee
- The origin: Ethiopia
- The city: Portland
- A use: the French press
What doesn't help, or actively hurts?
- Keyword lists with no sentence at the end of a caption. Nothing in Instagram's documentation says this helps, and it makes the post harder to read.
- Hashtags in the comments on Instagram: Instagram's own page says to put them in the caption.
- Trending words unrelated to the video. Someone searching "recipe" who lands on a sale leaves right away.
- Changing your username every month. People who know you search for your name; Instagram suggests including the name people know you by.
- Numbered recipes ("exactly five keywords," "first line is weighted") with no official source behind them.
How do you know search is bringing you views?
Open the insights on your posts and check whether you get a breakdown of where views came from, with a line for search: availability varies by app, account type and format. If you do, compare your own posts: does a video with a clearly named topic get more views from search than your other videos, and over a longer stretch? That is the main appeal of search: a post people find through search can keep getting views long after it goes live. Track those comparisons month over month instead of trusting an average you found online. Our TikTok and Instagram guides cover the formats that suit this kind of answer-style content.
An 8-point checklist before you post
- Your profile name says what you do (and your city if you are local).
- Your bio says what you do, for whom, where.
- The caption's first sentence names the topic in your customer's words.
- Hashtags sit in the caption, specific and few.
- On TikTok, the topic is written on screen and said out loud.
- The content delivers on the keywords.
- The location is tagged when it matters for search.
- In a month, you will check the share of views that came from search.
Getting found with Oposto
Oposto learns your brand from your website: your voice, your products, your audience. It drafts posts, carousels and short videos with voiceover and captions, adapts each post to each platform and reviews it before it goes out, with a score and recommendations. You approve, it publishes on schedule, then it tracks real performance so you can reuse what works. The free plan needs no credit card: try Oposto.
Frequently asked questions
Do hashtags still help you get found on Instagram?
Yes. Instagram lists hashtags among the things its search matches against the text people type, along with names, bios, captions and places. Put them in the caption, not the comments, as Instagram recommends.
Does TikTok read on-screen text for search?
TikTok does not document this precisely as of October 2026. It says video information such as captions, sounds and hashtags counts for recommendations. Writing the topic on screen still helps people who watch with the sound off.
Should I add a keyword to my profile name?
Instagram search reads profile names. Adding what you do or your city next to your brand name is useful as long as you stay recognizable. Avoid changing your username often.
How do I find what people search for on TikTok?
Use the search bar's autocomplete and, where available, Creator Search Insights, which shows frequently searched topics and the ones few videos cover.