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How to compress a JPG without losing visible quality
The quality slider decides how much detail the encoder throws away. Here is what actually changes as you lower it, where to look to judge the result, and how to choose a setting for the image in front of you instead of guessing. Read the article -
Why is my PNG file so large?
PNG is lossless, so there is no quality setting that can shrink it. That one fact explains why "compress PNG" often does nothing, and what to do instead. Read the article -
How to compress images without ruining them
Most compression advice says "use 80%". That number is a starting point, not a rule. This is what the quality setting actually does to a photograph, and how to find the right value for the image in front of you. Read the article -
WebP or JPG: which should you upload?
WebP is usually smaller than JPG at the same visible quality, and it supports transparency. JPG opens everywhere without a second thought. The choice depends on where the file is going, not on which format is newer. Read the article -
Why your PNG will not get smaller
PNG is lossless, which means there is no quality setting that can shrink it. Understanding why explains what does work — and why "compress PNG" is often a promise that cannot be kept. Read the article -
What image size do you actually need for a website?
Most web images are several times larger than the space they are shown in. Working out the real display size first is the single biggest saving available, and it costs nothing in quality. Read the article -
How to compress images for email attachments
Mail servers reject oversized attachments, and a phone photo is often larger than the limit on its own. Here is how to shrink a batch of images before attaching them, without wrecking the ones that matter. Read the article
Blog
Image compression, explained
Short, practical articles about making image files smaller: what the quality setting really does, why a PNG refuses to shrink, and which of the three levers is worth pulling first.
Try it with your own image
Every article here is about a decision you can make in the compressor. Nothing is uploaded, and the original file on your disk is never modified.