Image Guides & Tutorials

Plain-English guides to image formats, sizes and editing. Learn the "why", then use our free tools to get it done.

What Is a HEIC File? (And How to Open One Anywhere)Why your iPhone saves HEIC photos, and how to open them on any device.How to Remove a Background in Canva (Step by Step)Canva's Background Remover explained, plus a free alternative.How to Remove a Background in Photoshop (4 Easy Ways)Four Photoshop methods, from one click to pixel-perfect.How to Remove a Background in GIMPThree GIMP methods for a clean cutout, plus saving as PNG.JPG vs JPEG: What's the Difference?Is JPG the same as JPEG? The short answer and the history behind it.How to Convert an Image to PDF (On Any Device)Save photos, JPGs and screenshots as PDF on any phone or computer.JPG vs PNG: Which Format Should You Use?The real difference between JPG and PNG, and when to pick each one.How to Reduce Image File Size Without Losing QualityFive simple ways to make photos smaller on any device.Lossy vs Lossless Compression (Explained Simply)How lossy and lossless compression work, and which to choose.What Is a WebP File? (And How to Open or Convert It)Why so many images save as .webp, and how to open or convert them.Standard Photo Sizes: The Complete ChartEvery common print size in inches, cm and pixels, in one chart.What Is DPI? (DPI Meaning Explained Simply)DPI, PPI and 300 DPI explained, plus how to check and change it.Instagram Image Sizes and Dimensions (2026 Guide)Post, story, Reel and profile picture sizes, with aspect ratios.Social Media Image Sizes Cheat Sheet (2026)Every post, cover and profile size for the big platforms.What Is an AVIF File? A Simple GuideThe newest image format explained, plus how to open and convert it.How to Make a GIF (On Any Device)Make GIFs from videos or photos, on iPhone, Android or a computer.What Is an SVG File? (Vector Images Explained)Vector vs raster in plain English, plus how to open and convert SVG.How to Crop a Screenshot (Every Device)Crop screenshots on Mac, Windows, iPhone, Android and Chromebook.What Is a JFIF File? (And Why Your Images Save as .jfif)Why images save as .jfif on Windows, and how to turn them into JPG.How to Fix Pixelated PhotosWhy photos look blocky, and how to make them clear again.How to Fix Grainy PhotosWhy low-light photos get noisy, and how to clean them up.Image File Formats Explained (A Simple Guide)Every common image format in one place, and when to use each.What Is OCR? (Optical Character Recognition Explained)What OCR means, how it works, and how to copy text from pictures.