Instagram SEO in 2025: How to Get Found and Grow Your Reach

Key Takeaways

• Instagram is now a search engine: 67% of Gen Z use it to search for products, services, and inspiration.
• Keywords matter more than hashtags: Optimise captions, bios, and alt text with natural, relevant keywords.
• Hashtags are secondary: They now serve as categorisation tools, not primary growth drivers.
• Engagement drives rankings: Saves, shares, and dwell time are stronger signals than likes alone.
• Alt text is underrated: It boosts accessibility and helps Instagram’s algorithm “read” your content.
• Consistency pays off: Regular posting and an active profile increase visibility.
• Niche focus wins: Accounts with a clear, consistent niche perform better in search and discovery.
  

Introduction

It feels like yesterday when Instagram was just a glossy feed of Throwback Thursdays, not-so-inspirational quotes, and the Rio de Janeiro filter absolutely everywhere. Today, 67% of Gen Z use Instagram as a search engine. We’ve seen this shift first-hand with clients: people aren’t just scrolling anymore, they’re actively searching for recipes, venues, services, and products.

That’s why Instagram SEO has become an effective and underutilised tool in a social media marketer’s kit. The platform is no longer just social; it’s a discovery engine. When your content is optimised for search, your brand becomes easier to find, can reach new audiences, and is more likely to drive traffic and conversions. If your content isn’t optimised for search, it might as well not exist.

To capitalise on this shift, we’ve helped brands adapt by treating Instagram like Google, applying proven SEO principles to boost visibility. Here’s what Instagram SEO means in 2025, the ranking factors that matter, and how to get ahead.

What is Instagram SEO?

Instagram SEO is the practice of making your posts easier to find in Instagram’s search results, users’ feeds, and the Explore tab. Put simply, it helps Instagram’s algorithm understand your content so it can show it to the right people.

The concept mirrors traditional SEO. On Google, you optimise for keywords and intent. On Instagram, you do the same through captions, bios, hashtags, and even alt text.

For example, if you run a café in Bristol, a caption that includes “best coffee in Bristol” helps you show up when someone searches “coffee Bristol” in Instagram’s search bar. A few years ago, that search would only return hashtags. Now, keyword-rich, clever content takes priority.

The evolution of Instagram’s algorithm

Instagram has steadily shifted from a “feed-first” app to a “search-first” platform.

• 2010-2015: No algorithm was present; users’ feeds would consist of friends’ posts sorted in chronological order. Hashtags were introduced in 2011 to aid post discoverability.
• 2015-2019: The algorithm was introduced, favouring relevance over recency. Ranking factors included post engagement and a user’s previous engagement with accounts.
• 2020-2022: Explore pages and Reels took over, rewarding engagement and trends.
• 2023-2025: Instagram now behaves like a search engine. It weighs keywords, context, and intent, not just hashtags.

We’ve broken down these changes in more depth in our post on Instagram algorithm hacks.

Are hashtags still useful on Instagram in 2025?

When discussing SEO for Instagram, hashtags are a point of contention for many. Some say they’re dead, others cling to them as the holy grail of visibility. The truth? They’re not worth obsessing over anymore.

In 2025, hashtags aren’t the primary discovery tool they once were – they’ve shifted from a growth driver to more of a supporting act. Even Instagram’s CEO, Adam Mosseri, has said hashtags “don’t significantly increase your reach on Instagram, contrary to popular belief.” At best, they help categorise content and connect you with people in a specific niche.

Here’s what’s changed:

• From search driver to context signal: Instagram’s algorithm now prioritises keywords in captions and bios. Hashtags act more as a secondary signal to help categorise content.
  
• Quality over quantity: Using 5-10 highly relevant hashtags outperforms dumping 30 generic ones. Overstuffing hashtags can actually hurt engagement.
  
• Niche targeting works best: Broad hashtags like #food or #travel are overcrowded. If possible, aim for hashtags with around 25k-150k total posts.
  
• Community hashtags still matter: Local or community-driven tags can connect you with a highly engaged niche audience.
  

So, are hashtags still useful? Sort of. Definitely not in the way they once were. They’re no longer the main ingredient of discoverability, just a sprinkle of seasoning. Spend your energy on strong captions, keywords, and content strategy instead.

Key Instagram ranking factors in 2025

Three groups of signals matter most:

1. Content signals

• Keywords in captions and bios: Use naturally, the same way you would in web SEO.
  
• Alt text: Write descriptive, keyword-rich alt text. It helps the algorithm “read” your images and ensures your posts are accessible to users with screen readers.
  
• Hashtags: Aim for around 5-10 specific and relevant hashtags, with between 25k-150k total posts.

2. Engagement signals

• Likes, comments, and shares: All count, but saves and shares carry more weight.
  
• Dwell time: The longer someone spends on your post, the stronger the signal. Carousels and Reels are great for this.
  
• Consistency: Active, regular posting signals reliability.

3. Profile signals

• Optimised bio: Make it clear who you are and what you offer using searchable terms.
  
• Niche focus: Consistent accounts in a defined niche outperform generalists.
  
• Recency: Recently active profiles rank higher in search.
  

How to optimise your Instagram for search

Here’s the process we recommend to clients:

1. Research keywords: Think like your audience. A wedding photographer in London should optimise for “London wedding photographer”.
   
2. Optimise captions: Write conversational, engaging captions that naturally include your keywords.
   
3. Write alt text: Be descriptive. Instead of “bride photo,” write: “Bride holding bouquet in central London wedding photo”.
   
4. Select hashtags wisely: Use 5-10 niche hashtags. Mix broad (#weddinginspo) with specific (#LondonWeddingPhotographer).
   
5. Leverage Reels: Video is pushed hard by Instagram. Add keyword captions and text overlays for search visibility. For a broader view of platform changes, see our post on the best Instagram strategy in 2025.
   
6. Track results: Use Instagram Insights to see which posts drive discovery. Cross-reference with Google Keyword Planner for new ideas.
   

Pro tip: Test captions. I’ve doubled reach on client posts just by front-loading a keyword phrase in the opening line.

Common mistakes to avoid

• Keyword stuffing: Awkward captions turn readers off.
  
• Hashtag spam: Posts with more than 30 hashtags often perform worse.
  
• Skipping alt text: A wasted opportunity for ranking.
  
• Posting sporadically: Inactivity is penalised, and you’ll miss out on potential regular engagement.
• Chasing trends blindly: Viral content that doesn’t fit your niche won’t build long-term visibility.
  

If you want to tidy up your account for better performance, read our guide on spring cleaning your social media.

Bright Sprout’s approach to Instagram SEO

Here’s where most agencies slip up: they treat Instagram SEO like a checklist of hashtags and captions.

At Bright Sprout, we take a partnership approach. We don’t just optimise Instagram in isolation; we integrate it with your SEO and content strategy. That means your Instagram boosts visibility on the app and supports discoverability across Google.

This fits into wider shifts we’ve covered in digital marketing trends for 2025.

If you’re tired of agencies that stay distant and tick boxes, Bright Sprout’s approach will feel different. We focus on long-term, measurable growth, not vanity metrics.

Final thoughts

Instagram is no longer just a social network. In 2025, it’s a search engine in its own right, and Instagram SEO is now essential.

By applying SEO principles inside the app, keywords, alt text, hashtags and engagement tactics, you’ll maximise the chances of your content being found.

Want to see how this ties into the bigger picture? Read our analysis on whether SEO is dead. Spoiler: it’s evolving, not dying. If you’re ready to future-proof your Instagram strategy, partner with Bright Sprout. We’ll help you stay discoverable no matter how the algorithm evolves. Get in touch today to see how we can transform your online strategy.