The Social Magnum blog
Notes from building on all social networks — the platform rules, the publishing playbooks and the API behaviour nobody documents. Every figure here was checked on a live account.
The 12 Social Media KPIs That Matter in 2026 (With Formulas)
A KPI is a number with a decision attached. The twelve worth acting on across four groups, the formulas behind them, why industry benchmarks mislead, and a one-page monthly report format.
Read the article
48 Social Media Post Ideas for 2026 (By What They Earn)
Idea lists fail when they are fifty random prompts. These 48 are organised by what each earns — saves, shares, comments, trust, sales, or your time back — so you can pick for the slot you need to fill.
Read the article
Social Media Content Calendar: The Template That Gets Used (2026)
The working version: nine columns that matter, a copyable in-page template, a weekly rhythm to fill it, and the batch-and-queue workflow — nothing gated behind an email form.
Read the article
Pinterest Pin Size: The Specs Page Has No Size On It
Pinterest's Pin specification page lists file types, safe zones and character limits, and no image dimension at all. What it does document is that Pinterest puts a colour layer over your image.
Read the article
Facebook Group Cover Photo Size: Three Covers, One Word
The answer is 1,640 x 856. The reason page one is confusing is that Facebook calls three different rectangles a cover photo, and a third of the results answer with the wrong one.
Read the article
Facebook Profile Picture Size: Every Number Is a Display Size
Facebook says the picture is larger on mobile than desktop. Canva and Adobe both say the opposite. And every figure on page one describes where the image lands rather than what you should upload.
Read the articleWe write this down because we hit it ourselves.
Social Magnum schedules and publishes to all your social accounts from one composer, with a calendar, team approvals and a shared inbox. Free to start.