ResizeImg field guides
Practical image guides based on how the tools work
Clear explanations of dimensions, formats, compression trade-offs and browser processing—written to help you make a better output, not to fill a page.
Written and reviewed by ResizeImg · Updated 29 July 2026Complete overview
How to reduce image size without ruining quality
Understand dimensions, encoding, format choice and a repeatable five-step image optimization workflow.
10 minute readFocused answers
Choose the problem you need to solve
Each guide explains the decision, the trade-offs and how ResizeImg handles the file.
File-size field guide
How to compress an image to a target size in KB or MB
Learn how target-size image compression works, why exact file sizes vary, and how to reach an upload limit without unnecessary quality loss.
8 minute readResizing field guide
How to resize an image without stretching it
Understand aspect ratio, downscaling, enlargement and practical quality checks before changing image dimensions.
8 minute readFormat field guide
JPG vs PNG vs WebP: which format should you use?
Compare JPG, PNG and WebP for photographs, transparency, graphics, compatibility and file size.
9 minute read