画像とPDF最適化のガイドとヒント。
A three-page PDF has no business being 20 MB. The reason is almost always the images inside, and once you know that, shrinking it is easy.
ダウンロード →Big images are the number one reason pages load slowly. You can usually cut 60-80% of the weight and nobody sees the difference. Here's how, and where people go wrong.
ダウンロード →Every guide says AVIF is smallest, so just use AVIF. That's not wrong, but it's not the whole story. Here's how the three formats really compare and what I reach for in real projects.
ダウンロード →Your iPhone saves photos as HEIC, and Windows hates it. Here's why Apple did that, the one setting that switches back to JPG, and how to convert the files you already have.
ダウンロード →
