How Instagram's Feed Algorithm Works in 2025
The Feed algorithm prioritises content from accounts you regularly engage with. Key signals, in order of importance: 1) Relationship signals (do you DM, comment, share each other's posts?), 2) Interest signals (based on your past engagement patterns), 3) Content type (video performs better than photos, carousels better than single images), 4) Recency (fresh content is favoured), 5) Time spent (how long people pause on your content).
How the Reels Algorithm Works
Reels are Instagram's biggest growth surface. The algorithm shows Reels to both followers and non-followers. Key ranking factors: Completion rate (most important), Replay rate, Shares, Comments, and Likes (in that order). Instagram explicitly stated that Reels using original audio are pushed more than those repurposing TikTok videos (with TikTok watermarks).
How the Explore Algorithm Works
Explore shows your content to people who don't follow you. It's powered by collaborative filtering — if Person A follows both you and Account X, and Account X appears on Person A's Explore, Explore might show Person A's followers your content too. Getting into Explore requires strong engagement signals from your existing followers.
The Most Important Algorithm Signal in 2025: Saves
Instagram has confirmed that Saves are among the most powerful engagement signals. A save tells Instagram "this content is so valuable I want to find it again." Create content that deserves to be saved: checklists, tutorials, inspiring quotes, step-by-step guides, reference posts. Every post should be designed with the question: "Would someone save this?"
What Kills Your Reach: Shadow Ban Triggers
Instagram silently reduces reach for: repetitive hashtag sets (rotate your hashtags), using banned hashtags, getting reported by multiple users, posting too rapidly, and using third-party apps that require your login. If your reach drops suddenly, check for banned hashtags, vary your hashtags, and pause posting for 48 hours.
How to Work With the Algorithm, Not Against It
Post Reels 3–4x/week. Create carousel posts 2x/week. Use Stories daily with interactive elements. Engage with followers immediately after posting. Use keyword-based descriptions (Instagram now indexes content semantically). Never use the same hashtag set twice in a row. Post when your specific audience is online (check Insights).