ImgFlow is an in-browser image compressor and converter. It compresses JPG, PNG and WebP, compresses to a target size such as 100KB or 500KB, converts HEIC to JPG, converts to WebP, AVIF or JPEG XL, and resizes. It also does batch processing with ZIP download, has social, marketplace and avatar presets, and strips EXIF and GPS data. It installs as an offline PWA.
The site says core features stay permanently free with no sign-up, no watermark and no file-count or size limits. A Pro tier is optional and adds folder export, presets and pipelines, with prices on a separate page. Processing runs as WebAssembly in the browser with no upload step, which is the site's own claim.
People needed to shrink and convert images without sending files to a server, so ImgFlow does that work on the device with WebAssembly.