How to get an image out of one format and into another, what the formats actually cost you, and how to tell whether a tool that touches your files deserves to.
Latest
A folder of images can be converted on your own machine by the OS, a desktop app, the command line or a browser page. What each one handles, what it costs, and where ours stops at 150 files.
JPGWebP
The JPG quality number is not a percentage. What it controls inside the encoder, what each step costs in file size on a measured photo, why 100 is not lossless, and whether re-saving does damage.
JPGPNG
You converted an image and the file got two, five or thirteen times larger. Four reasons that happens, measured on one photograph, and which setting brings the size back down.
AVIFJPG
Your browser displays the AVIF perfectly and nothing else on your computer will open it. Three routes from AVIF to JPG, which one keeps the image on your device, and why the JPG comes out several times larger.
ConvertingPNG
Right-click Save image as on an animated GIF downloads the whole moving file, not the frame you were looking at. Why converting it gives you frame one specifically, and how to get any other frame instead.
ExtensionsPrivacy
Four image converter extensions, read from what each one actually declares in its manifest rather than what it promises in its listing. The broadest permission on the list is ours too.
JPGConverting
Right-click, Save image as, and the file lands as photo.jfif. Why Chrome and Edge do this on Windows, why renaming it is safe, and the one-click way to get a real .jpg every time.
ConvertingExtensions
A web page can hold a hundred images and the browser has no button that saves them. Five routes that do, ordered by how much they touch and whether anything is uploaded.
ConvertingExtensions
Web images save as download.jpg or a string of hex because nothing told the browser otherwise. Why that happens, and how to name every image from a template the moment it lands.
ConvertingPrivacy
Most do what they promise. The real cost is your file landing on someone else's server, and a few that hand back malware. Plus the routes that never upload.
WebPJPG
WebP is the one image format Windows does not decode on its own. One free Microsoft package fixes Photos, File Explorer and Paint - plus the half it misses.
WebPJPG
Your browser saved a WebP and now nothing on your desktop opens it. Why renaming does not help, and five routes to a real JPG or PNG.
AVIFConverting
No browser can encode AVIF, so there is no Save as AVIF anywhere in yours. Three routes to an AVIF file, what it saves you, and when it is the wrong choice.
PDFConverting
Ctrl+P gives you the page, not the image. Three routes to a one-page PDF from a picture on a website, and the one case where nothing is re-encoded at all.
ExtensionsConverting
The most popular one was pulled for injecting affiliate links. What to check before installing a replacement, including the one place a competitor beats us.
WebPJPG
The site gave you a .webp file and the app you need it in will not open it. Three ways to get a real JPG, and what each one costs you.
WebPPNG
PNG when you need the pixels kept exactly and the transparency intact. How to get one from a WebP, and when PNG is the wrong choice.
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