Sites and apps similar to Image Convert Ninja include IrfanView, which is free for personal use. Other options are XnView MP, nomacs, Image Toolbox and FastStone Image Viewer. You're spoiled for choice with Image Converters like Image Convert Ninja: we list more than 50 alternatives for Windows, Mac, Linux, Android and self-hosting.
CloudConvert is a online file conversion tool. more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
United Kingdom
Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.
Romania
EU
Converseen is a free cross-platform batch image processor for Windows and Linux that allows you to convert, resize, rotate and flip an infinite number of images with a mouse click.
ItalyEU
Transfonic is an online file conversion platform that allows users to convert, compress, and process documents, images, audio, and video directly in the browser.
Batch process photos with resizing, cropping, color adjustments, text or watermark overlays, preview changes before saving, automate renaming with custom patterns, support for major formats, folder structures, preset settings, and drag-and-drop management.
Canada
Create email-friendly images, resize in batches, convert formats, and compress using high-quality filters. Integrated in Windows Explorer, it offers high-res settings, watermarking, a profiles library, PDF creation, and supports devices like iPad and iPhone.
FranceEU
Easy tool to convert files online. More than 309 different document, image, spreadsheet, ebook, archive, presentation, audio and video formats supported.
United Kingdom
YOGA Image Optimizer is a free tool to convert and optimize JPEGs, PNGs and WebP image files. Simply Drag & drop images, click on “Optimize”, and you're done!
Image Resizer for Windows is a utility that lets you resize one or more selected image files directly from Windows Explorer by right-clicking.
United States
Free, private image conversion across many formats. All processing happens locally on your PC — no uploads, no servers. Batch process, resize, smart crop, and fine-tune quality.
Image Converter Plus is a conversion and resizing software for Windows. It can convert files across various image formats while maintaining quality. It allows users to save images in popular formats and includes a quick conversion feature.
United States
Experimental, fast Web PNG/JPG optimizer which offer lossless, visually lossless or lossy compression. it performs image reductions over iterations thanks to recursive multi-processing and multithreading systems.
