A free web app providing 200+ online tools for developers, including JSON formatters, PDF mergers, code converters, data generators, and more—no signup required.
Cost / License
- Free
- Proprietary
IndiaPlatforms
- Online
Koolyz Alternatives
Koolyz is described as 'Your ultimate collection of 100+ free online tools, designed to simplify everyday tasks in seconds. Fast, smart, and easy to use' and is an website. There are more than 100 alternatives to Koolyz, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Android apps. The best Koolyz alternative is FFmpeg, which is both free and Open Source. Other great sites and apps similar to Koolyz are Penpot, Affinity, Canva and Figma.
Alternatives list
Convert, compress, and optimize images, PDF files with our powerful in browser tools. No data is sent, everything happens in your browser using web assembly. That means very less waiting to process your files!
A versatile online image compression tool that prioritizes your privacy. It handles everything locally in your browser—nothing is ever uploaded. Convert between JPG, PNG, GIF, and WebP, resize by dimension or ratio, and fine-tune quality with a live preview.
23 Pi7 Image Tool alternativesPi7 Image Tool is a collection of some online tools like Image Compressor, Image resize tool, and Image conversion tools (Image to JPG, Image to PNG, etc).
PDF Shelter processes PDF documents on your own browser, avoiding data transfers and the risk of sharing data with third-parties.
Cost / License
- Free
- Proprietary
Platforms
- Online
+4
ConvertOnline is a fast and secure online file converter that supports hundreds of formats — including documents, images, videos, audio files, archives, and more.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Software as a Service (SaaS)
+5
A professional photo size reducer for Mac which will reduce PNG, JPEG and GIF images size with LOSSLESS quality in a batch.
+1
Vertopal is an online platform for converting computer files to a variety of file formats. Our main goal is to provide the best conversion quality without needing to install third-party applications.
Pichi for Mac is the best and quickest tool for optimizing and resizing your images individually or in batches.
Net Watcher gives you full transparency over the quality and stability of your internet connection. Detect outages, trace network paths, and take action!.
Aspose.Total Conversion is a free online document converter that completely supports conversion to/from many common word processing, spreadsheet, presentation, CAD drawings, images and other popular file formats.
Cost / License
- Free
- Proprietary
Platforms
- Online
Cost / License
- Free
- Proprietary
Platforms
- Online
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