Daily Marketer

Guides

Practical, sourced answers to the questions that come up in everyday marketing work: ad specs, character limits, tracking and email. Updated when the platforms change.

Every ad image size for 2026: Meta, Google, X, Twitch and RedditThe recommended image sizes, aspect ratios, file limits and safe zones for Meta, Google Performance Max and display, X, Twitch and Reddit ads in 2026, in one place.7 min readAd copy character limits for every platform (2026)Headline, description and primary text character limits for Meta, Google Search, Performance Max, Demand Gen, TikTok, LinkedIn, Reddit and X ads, with the points where each platform cuts text off.6 min readWhy GA4 counts your paid social as organic, and how to fix itGA4 files paid social traffic as Organic Social when the UTM medium doesn't match its paid pattern. Here are the exact rules, the mediums that break them, and how to fix your links.6 min readEmail preview text: what it is and how long it should beWhat email preview text (preheader) is, how much of it Gmail, iPhone Mail and Outlook show, how to write it, and how to stop inboxes filling it with "View in browser".5 min readHow to convert HEIC to JPG on iPhone, Mac, Windows and onlineWhy iPhone photos are saved as HEIC, why ad platforms and websites reject them, and four ways to convert HEIC to JPG, including a free converter that never uploads your photos.4 min read