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Social SEO: Instagram, TikTok and LinkedIn as search engines in 2026

40% of Gen Z searches on TikTok before Google. Instagram, LinkedIn and TikTok are active search engines with millions of daily queries. Optimising for them — social SEO — is now an essential discipline for any content strategy.

Social SEO: Instagram, TikTok, LinkedIn as search engines

Social networks have moved beyond being just content distribution channels to become search engines with their own distinct behaviours. A user searching for 'Japanese restaurant in London' may do so on Google, but also on Instagram (to see real photos) or TikTok (to see experience videos). If you are only optimising for Google, you are absent from a growing part of the decision-making process.

What social SEO is and why it matters

Social SEO is the optimisation of your social media presence to appear in each platform's internal search engine. Just as web SEO optimises for Google, social SEO optimises for the search algorithms of Instagram, TikTok and LinkedIn.

According to Google data (2023), 40% of users aged 18-24 prefer to search on TikTok or Instagram before Google. Adobe found that 42% of consumers have purchased something they discovered on TikTok. LinkedIn processes more than 1.4 billion searches per month. These are figures that no serious content strategy can ignore.

Does your brand appear when people search on social media?

At Mkt Web 360 we design social media strategies that integrate social SEO — so your content is not just seen, but found when people search for you.

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Social SEO on Instagram

Instagram indexes text in several places: the bio, content titles, image alt texts and — since 2022 — keywords in captions. To rank in Instagram's search engine, you need: a bio that includes relevant search terms (without sacrificing clarity), captions that use natural language with your topic's keywords, and strategic hashtags that act as search categories.

Social SEO on TikTok

TikTok is the most interesting case because it indexes audio. Its automatic transcription system converts what you say in the video into searchable text. This means that mentioning your topic's keywords in the video — not just in the caption — has a direct impact on search visibility.

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Social SEO on LinkedIn

LinkedIn has the highest commercial intent search engine among the three platforms. Its users search for suppliers, experts, solutions and professional content. Areas to optimise: your profile headline (equivalent to an H1 in web SEO), the 'About' section (where you can naturally include search terms), native LinkedIn articles (indexed in both LinkedIn and Google searches) and posts that generate conversation.

Presence on every search engine your customer uses

If you want to integrate social SEO into your social media strategy, we can design a search-oriented content plan by platform.

Frequently asked questions about social SEO

Does social SEO replace Google SEO?
No. They are complementary channels with different search intentions. On Google you search to buy, compare or learn in depth. On TikTok or Instagram you look for inspiration, quick tutorials and trusted recommendations. A complete strategy works both channels according to the funnel and audience.
What keywords should I use for social SEO?
The same as for Google, but adapted to each platform's conversational context. On TikTok more colloquial, specific terms work well ('how to remove oil stains from a sofa'). On LinkedIn more professional terms work ('B2B content strategy'). Use each platform's search bar to see what related terms it suggests.
Does TikTok's algorithm really use audio words for indexing?
Yes. TikTok automatically transcribes audio and uses that transcript to understand and index video content. Mentioning your topic's keywords in the video — not just in the caption — has a real impact on content distribution in searches.
How long does social SEO take to show results?
Much faster than web SEO. A well-optimised TikTok video can rank in relevant searches within hours or days. On Instagram it may take one or two weeks to consolidate. LinkedIn has a longer content lifespan — a good article can keep appearing in searches weeks after publication.