Why You Should Preview Instagram Posts Before Publishing
Instagram is a visual-first platform where first impressions are everything. A caption that looks fine in your notes app might wrap awkwardly in the feed. A hashtag block that seems tidy in your drafts might push your CTA below the "more" cutoff — burying the most important line of your post. Our Instagram post preview tool lets you see exactly what your followers will see before you commit to publishing.
Instagram Caption Length and the "More" Cut-Off
Instagram captions support up to 2,200 characters, but the feed only shows the first 125 characters (approximately 3 lines) before truncating with a "more" link. This means your hook — the sentence that convinces someone to stop scrolling — must appear within those first 125 characters. Use our caption editor to preview the truncation and optimise your opening line.
For maximum impact, put your strongest statement, question, or CTA in the first line. Save hashtags for the end of the caption or the first comment, so they don't eat into your prime caption real estate.
Instagram Image Sizes and Aspect Ratios in 2025
Square (1:1): 1080×1080px — the classic and safest choice for feed compatibility. Portrait (4:5): 1080×1350px — takes up the most vertical space in the feed, which naturally draws more attention. Landscape (1.91:1): 1080×566px — works well for wide scenes but takes less feed space. Reels and Stories: 1080×1920px (9:16) — always use vertical full-bleed for maximum screen coverage on mobile.
How to Plan Your Instagram Grid
Your Instagram grid is your visual portfolio — the first thing someone sees when they visit your profile. A well-planned grid with consistent colour palettes, alternating content types, or thematic patterns can significantly increase profile visits converting to followers. Use our grid preview feature to see how your new post fits with your existing content before you hit publish.