Best Image Converters for Linux of 2025

imgproxy is an extremely fast and secure image processing tool. imgproxy is an image processing tool that is lightning fast and secure. It is designed to increase developer productivity and save time developing image processing pipelines. imgproxy Pro is a powerful version of this fast and secure image processing tool. It offers priority support, smart image adjustments and machine learning features. Thousands of users trust imgproxy on projects of various scales, from eBay and Photobucket to many startups. This is because it reduces costs as well as removes the restriction that saved images must conform to certain formats. 15 years of combined experience and machine learning expertise have guided our selection of 55+ features. Object detection Video thumbnail generation Color adjustment Auto-quality Advanced optimizations Watermarking Conversion from GIF to MP4

MConverter is an online file converter for most video, audio, image, e-book, document and archive formats. It makes it very easy to convert multiple files in bulk. You can select files from anywhere, even the clipboard with Ctrl+V. Once a conversion is complete, you can save its output files to any folder on your device. MConverter lets you compress PDF files in bulk. Pick between basic, strong, and extreme compression: up to 90% reduction in size, depending on the file. MConverter can analyze files with missing extensions, try to guess their real formats and offer to convert them to other formats you can already use on your device. Supported formats: 3g2, 3gp, 7z, aac, ac3, ai, amv, avi, avif, azw, azw3, bmp, bz2, cab, cbr, cbz, csv, deskthemepack, dng, doc, docx, drawio, epub, fb2, flac, flv, gif, gz, heic, htm, html, ico, iso, jar, jpeg, jpg, json, jxl (jpeg xl), m4a, mcaddon, mcpack, mctemplate, mcworld, md (markdown), mid, mkv, mobi, mov, mp3, mp4, mpeg, mpg, mpo, odp, ods, odt, ogg, opus, pdf, png, ppm, pps, ppsx, ppt, pptx, psd, rar, rtf, sami, smi, srt, sub, svg, tar, tbz2, tgz, themepack, tif, tiff, tini, txt, txz, vob, wav, webm, webp, wma, wmv, xcf, xls, xlsx, xz, zip

XnConvert is a robust, swift, and free cross-platform batch image converter that enables users to streamline the editing process for their photo collections. Users can effortlessly rotate, convert, and compress their images while applying over 80 different actions such as resizing, cropping, color adjustments, and various filters. It supports a wide array of common image and graphic formats, including JPEG, TIFF, PNG, GIF, WebP, PSD, JPEG2000, JPEG-XL, OpenEXR, camera RAW, HEIC, PDF, DNG, and CR2. Additionally, users can save and reuse their presets for future batch conversions, enhancing efficiency. XnConvert is compatible with multiple platforms, offering versions for Windows, Mac, and Linux in both 32-bit and 64-bit formats. This versatile tool also boasts multilingual support, with over 20 different translations available. Featuring an intuitive interface, XnConvert provides convenient drag-and-drop functionality, making it user-friendly. With compatibility for more than 500 formats and the ability to export to around 70 different file types, XnConvert truly stands out as a powerful solution for image processing.

JDeli can read and write images in HEIC format. It also provides a complete HEIC conversion between HEIC file formats and many other image file formats. JDeli can convert the image in one step. You can also read and write the HEIC file separately if you need to process the image using Java. Threading can improve the performance of your code reading and writing. JDeli can be used with threads, unlike ImageIO. JDeli has a similar API to ImageIO. It is also easy to switch between the two in your code. JDeli is actively being developed by IDRsolutions' development team, who use it in their other products. Unable to add a platform dependence? JDeli is 100% Java, and does not require plugins or native dependencies.

The Pi7 image compressor tool can compress JPEG images down to 50kb. This tool can reduce the size of JPEG images to 50kb.

ZeeConvert provides a versatile and user-friendly online toolkit for managing and optimizing digital images and documents quickly and efficiently. Designed for professionals, students, and casual users alike, it enables seamless conversion, compression, cropping, and resizing directly from your browser without any software installation. With ZeeConvert, you can shrink large PNG or JPG images to save disk space or enhance website load times, convert between popular formats such as PNG, JPG, and WebP, and tailor images to precise dimensions. The fully browser-based platform ensures compatibility across all devices, offering convenience and flexibility wherever you are. Its simple upload-choose-download process streamlines file optimization within seconds. Privacy is a top priority, with strict policies ensuring files are never stored or shared after processing. ZeeConvert empowers users to handle file tasks easily while maintaining complete data security. The free service removes barriers to digital file management, making it accessible for everyone.