Sites and apps similar to Koolyz include FFmpeg, which is free and open source. Other options are Penpot, Affinity, delphitools and Canva. There's no shortage of Image Optimizers like Koolyz, with more than 100 alternatives for Windows, Mac, Linux, Android and iPhone.
Kestrel Tools is a premium web-based utility platform offering a comprehensive collection of everyday digital tools in one clean, user-centric interface. It serves as a superior alternative to fragmented, ad-heavy utility websites by providing a personalized toolkit experience...
United Kingdom
Compress images in bulk. Unlimited images. All at once. No uploading. No signup. Compress unlimited images online at once. Your photos are your property and stay on your machine.
United States
Process images in bulk securely in your browser, no uploading necessary. It's private, fast, and easy! Upload all major image formats, resize, crop, compress, and convert images all at once.
United States
LAN Orangutan is a lightweight network scanner with persistent device labeling, multi-network support, and Tailscale integration. Built by 291 Group.
ShrinkFox by Chovexa is a privacy-first, client-side web utility engineered to compress JPG, PNG, WebP, and PDF documents down to exact target file sizes (such as <50KB, <100KB, or custom thresholds) with zero server uploads.
Effortlessly compress your images without loss of quality. Aerate offers an industry leading default mode, as well as new fast and extreme presets. Switch between modes quickly using the new compression slider.
Joyoshare Video Converter is an all-in-one video converter editor and DVD ripper that can convert between all video, audio, and DVD formats for multiple devices at 60X faster without quality loss.
China
ImageRobo is your all-in-one tool to compress and resize images quickly, for free, and with full privacy. No uploads, no signup. Supports JPG, JPEG, PNG & WebP. Optimize images for web, email, or social media — more powerful tools coming soon!
India
Free Online Converter, you can convert & download youtube videos in various format eg: mp3,aac, mp4, mkv, webm.
LyftPDF is an easy-to-use web-based PDF editing tool that allows users to merge, split, compress, and convert PDFs into various formats.
United States
