ImgKoi
Blog
Explainers, cheat sheets and tips about image formats, sizes, privacy and faster websites. Guides →
- Image Formats Explained: JPG, PNG, WebP, HEIC, AVIF and MoreSeptember 30, 2026 · 3 min read · A plain-English cheat sheet of image formats: what JPG, PNG, WebP, AVIF, HEIC, GIF, SVG and TIFF are for, with real file size tests and when to convert.
- Instagram Image Sizes in 2026: The Complete Cheat SheetSeptember 30, 2026 · 2 min read · Every Instagram image size in one place: square, portrait and landscape posts, stories, Reels covers, profile pictures and carousels, plus the 3:4 grid.
- The Best Image Format for Websites in 2026September 30, 2026 · 2 min read · Which image format should your website use? AVIF, WebP, JPG, PNG or SVG, with real file size tests and a simple setup that works in every browser.
- What Is EXIF Data? What Your Photos Reveal About YouSeptember 30, 2026 · 2 min read · EXIF data records your camera, settings, date and often your exact location in every photo. What it contains, who can see it, and how to remove it.
- Why Won't My iPhone Photos Open on Windows? (HEIC, Explained)September 30, 2026 · 2 min read · iPhone photos save as HEIC by default, which many Windows PCs, Android apps and websites can't open. Why Apple uses it, and the easiest fixes.
- YouTube Thumbnail Size (1280×720) and Channel Art GuideSeptember 30, 2026 · 2 min read · The right YouTube thumbnail size, file size limit and formats, plus channel banner and profile picture sizes, and tips for thumbnails that get clicked.