Apps similar to OpenShelf include Dinky, which is free and open source. Other options are GetCompress, ImageOptim, TinyFast and RasterFox. There's no shortage of Image Optimizers like OpenShelf, with more than 25 alternatives for Mac, Windows, Linux, the web and Android.
GraphicsMagick is the swiss army knife of image processing. Comprised of 282K physical lines (according to David A. Wheelers SLOCCount) of source code in the base package (or 952K including 3rd party libraries) it provides a robust and efficient collection of tools and libraries...
pngquant is a command-line utility and a library for lossy compression of PNG images.
Oxipng is a multithreaded lossless PNG compression optimizer in Rust. It can be used via a command-line interface or as a library in other Rust programs.
ShortPixel is arguably the top WordPress image optimization plugin: simple to set up, it can automatically optimize both your old and new images, as well as PDF files.
Romania
EU
All-in-one file converter for macOS. Convert images, videos, audio, documents, and PDFs across 80+ formats — entirely offline on your Mac. AI-powered upscaling, transcription, OCR, and TTS included. One-time purchase, $9.99.
ItalyEU
A floating shelf for Mac that aligns with Finder, allowing you to instantly collect, pin, and move files.
tinyPNG.App provides a GUI front end for tinyPNG for your local computer so you can optimize images using the tinyPNG API service. Available on Windows, macOS & Linux.
Leanify is a lightweight lossless file minifier/optimizer. It removes unnecessary data (debug information, comments, metadata, etc.) and recompress the file to reduce file size. It will not reduce image quality at all.
Holdem is a lightweight, open-source tool for effortlessly dragging and organizing files on your desktop. Inspired by Dropover and built with Tauri, Holdem lets you collect and drop files in a temporary holding area — no clutter, no hassle.
Finder extension for Mac: right-click a file to convert, compress, resize, remove its background, merge PDFs or share it as a link. Processed on your Mac; only sharing uploads files.
FranceEU
Poland
