Image Tools
Shrink a photo to fit an upload limit, resize an avatar, or convert a screenshot to another format. These tools run entirely on your own device using the browser canvas. Your images are never uploaded to a server, which makes them safe for documents, IDs and anything private.
"Every tool in this group processes your image on your own machine, using the browser canvas. Nothing is uploaded, nothing is stored, and they all keep working with the network disconnected. For photographs that is a meaningful difference: the usual free image tools require you to hand the file to a stranger's server first."
For preparing images, the resizer and cropper handle dimensions and aspect ratio with the common presets built in, and the aspect ratio calculator works out the missing dimension when you need to preserve proportions. The image to PDF converter builds the PDF file itself in the browser rather than calling a service.
For design work, the favicon generator produces the small set of sizes a modern site actually needs, which is far fewer than most generators emit, along with the markup and manifest to go with them. The colour palette extractor pulls the dominant colours out of an image, and the contrast checker tests foreground against background for accessibility compliance, which is the check most often skipped and most often failed.
Two tools here exist for privacy rather than production. The EXIF viewer shows the metadata hidden inside a photo, which routinely includes the exact GPS coordinates where it was taken, the device that took it and the timestamp. The redaction tool removes parts of an image permanently by rewriting the pixels, rather than drawing a black box over them in a way that can be undone by anyone who opens the file properly.
Between those two, the EXIF viewer is worth running once on a photo from your own phone. Most people are surprised by what is in there, and by the fact that it travels with the file every time they share it.