Arhan Ahmad

Choosing the wrong image format costs you page speed, user experience, and bandwidth. Here's a practical guide to the four major formats and when each makes sense. JPEG (JPG) — Still the universal standard Best for: Photographs, complex images with many colors. JPEG uses lossy compression that works well for natural scenes. It's supported everywhere. The downsides: no transparency, no animation, and visible artefacts at very low quality settings.

Every time you upload a photo to an online image tool, you're sending it to someone's server. Maybe you're okay with that. But what if the image contains sensitive information? A screenshot of a private conversation. A photo with GPS coordinates embedded in the metadata. A design mockup for a product that hasn't launched yet. This is why I built ToolBox Image — a free image toolkit where every single tool runs 100% in your browser using Canvas API and WebAssembly. Nothing is uploaded. Nothing is stored.

The most common question I hear is, "How do I make this image smaller without making it look worse?" Here are five techniques that work every time. 1. Switch to a modern format This is the single biggest lever. Converting a JPEG to WebP saves 25-35% with no visible difference. Converting to AVIF saves 50-60%. 2. Remove invisible metadata Every photo from a modern smartphone carries embedded EXIF data — camera model, GPS coordinates, date, settings. This metadata can add 50-200 KB per image.