Everything you were too polite to ask.
40 plain-English guides: sizes, platform tools, #ad rules by market, rates and rights. Every one has a last-checked date and its sources.
10 articles
- Formats and sizes
Instagram sizes cheat sheet 2026
Here's every Instagram size you'll actually use, in one place.
- Formats and sizes
Instagram Reels: length, captions, hashtags and covers
The quick rules for posting a Reel without surprises:
- Formats and sizes
Instagram carousels: slides, mixing media and aspect rules
Carousels are the best format on Instagram for saves and swipe-throughs. Here's how they work.
- Formats and sizes
Instagram Stories: sizes, safe zones, links and length
Stories disappear after 24 hours unless you save them to Highlights. They're where your existing followers hear from you most.
- Formats and sizes
TikTok video specs: sizes, lengths, captions and safe zones
TikTok's in-app help pages didn't load for us, so these figures come from TikTok's developer and ads docs, plus reputable guides where noted.
- Formats and sizes
TikTok Photo Mode and TikTok Stories
Photo Mode (TikTok's carousels) is a swipeable set of images with music. It's great for recipes, outfit breakdowns, lists and travel dumps.
- Formats and sizes
YouTube Shorts specs
YouTube's own definition of a Short is simple: up to 3 minutes, with a square or vertical aspect ratio.
- Formats and sizes
Pinterest Pin specs
Idea Pins no longer exist as a separate format. Pinterest merged them into standard Pins in 2023, so every Pin can now be an image, a video or several pages.
- Formats and sizes
LinkedIn image and video specs for B2B creators
LinkedIn's help pages blocked our checker, so the organic specs below come from recent guides that cite LinkedIn. The video ad specs are from LinkedIn's official ads page.
- Formats and sizes
Every size on one page
Bookmark this one. The details and caveats are in the platform articles above.
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