Image guides
Short, practical explanations of the questions behind everyday image jobs. Each guide links to the tool that does the job.
JPG vs PNG vs WebP: Which Image Format Should You Use?A practical comparison of JPG, PNG and WebP: compression, transparency, file size, quality and compatibility, plus which to choose for photos, logos and websites.How to Reduce Image File Size Without Making It Look BadThe three things that actually make image files smaller (dimensions, format and quality) and how to combine them without visible damage.How to Resize an Image Without Stretching ItWhy images stretch, how aspect ratio works, and the three safe ways to reach an exact size: fit, fill-and-crop, or pad.Crop vs Resize: What’s the Difference?Resizing scales the whole picture; cropping removes part of it to make a new frame.PNG Transparency ExplainedWhat transparency and the alpha channel are, transparent vs white backgrounds, which formats keep it, why JPG can’t, and what happens when you convert a transparent PNG.AI Upscaling vs Normal Image ResizingWhat actually happens when you enlarge an image normally versus with an AI upscaler, where AI helps, and where it can make things worse.How to Convert Images to PDF Without White BordersWhy most image-to-PDF tools add white bands, and how “image size” pages make each PDF page exactly match its picture.Lossy vs Lossless Image CompressionHow to choose between lossy and lossless compression: what each does to photos, screenshots and graphics, why repeated saves add up, and which quality to pick.How to Remove EXIF and Location Data From a PhotoWhat hidden metadata phone photos contain, including GPS location, why it matters, and how to remove it without re-compressing the image.Image Resolution Explained: Pixels, Dimensions, PPI and DPIWhat pixel dimensions, megapixels, PPI and DPI actually mean, which one matters for screens and print, and how to get the size you need.Best Image Sizes for WebsitesHow to choose pixel sizes for website images: heroes, content images, thumbnails, logos and social-sharing images, plus high-density screens, responsive images and file-size targets.