Guides

Straight answers about image formats, with no signup wall in the way.

SVG vs PNGSVG stores shapes, PNG stores pixels. A practical comparison of file size, scaling, transparency, editing and browser support — and when each format is the right choice.
What is an SVG file?SVG stands for Scalable Vector Graphics — an open, text-based format that stores artwork as shapes instead of pixels. What it is, how to open one, what it is good at, and where it falls down.
Fine-tuning images with a LoRATrain an image LoRA without guesswork. How many pictures you need, how to caption them, which rank and learning rate to start with, and how to spot overfitting early.
Fine-tuning video models with a LoRATrain a LoRA on a video diffusion model. Which base model to pick, how to cut and caption clips, what rank and learning rate to start with, and the VRAM you really need.
Image pixels vs CSS pixelsWhy a screenshot measurement can differ from a CSS width, how image scaling affects the result, and when a known reference can help translate dimensions.
How to measure pixels in an imageMeasure image width, spacing, straight-line distance and rectangular area with a pixel ruler. Learn edge coordinates, zoom and repeatable measurement techniques.
The Complete Developer's Guide to SVG in 2026How SVG works under the hood, which embed method to use for which job, how to cut file size with SVGO without breaking anything, and how to animate without fighting the browser.

Every PixelTools converter