XnConvert
XnConvert is a fast, powerful, and free cross-platform batch image converter. It allows you to automate editing of your photo collections: you can rotate, convert and compress your images, photos, and pictures easily, and apply over 80 actions (like resize, crop, color adjustments, and filter,). All common picture and graphics formats are supported (JPEG, TIFF, PNG, GIF, WebP, PSD, JPEG2000, JPEG-XL, OpenEXR, camera RAW, HEIC, PDF, DNG, CR2). You can save and reuse your presets for another batch image conversion. XnConvert is Multi-platform, it is available for Windows, Mac, and Linux for both 32-bit and 64-bit editions. XnConvert is Multilingual, it includes more than 20 different translations. It offers powerful features in an easy-to-use interface providing convenient drag & drop functionality. XnConvert is compatible with more than 500 formats and is exports to about 70 different file formats.
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MConverter
Online converter for video, audio, image, e-book, document, subtitle & archive files up to 10 GB.
Easy to use. Clean UI.
Select files and folders from anywhere, including the clipboard (Ctrl+V). Save your files to any folder.
MConverter lets you compress PDF files in bulk, by up to 90%!
Supported formats: 3g2, 3gp, 7z, aac, ac3, ai, aif, aiff, amv, arw, avi, avif, azw, azw3, bmp, bz2, cab, cbr, cbz, cr2, cr3, cso, 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, mxf, nef, odp, ods, odt, ogg, opus, pdf, pdf/a, png, ppm, pps, ppsx, ppt, pptx, psd, raf, rar, rtf, rw2, sami, smi, srt, sub, svg, tar, tbz2, tgz, themepack, tif, tiff, tini, tsv (tab), txt, txz, vob, wav, webm, webp, wma, wmv, xcf, xls, xlsx, xz, zip
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Pixillion
Convert JPG, HEIC, WEBP, PNG, JPEG, PDF, CR2, DNG, and other image formats. Convert images to JPEG, GIF, PNG, PDF, BMP, TIFF, and more. Rotate, resize and compress digital photos. Easily add captions or watermarks to your images. Convert images in a couple of clicks. Update metadata of image files. Crop multiple photos at once to a predefined aspect ratio or custom size. Free version available for non-commercial use. The easy one-click process makes Pixillion perfect for converting your image files and digital photos for posting on the web, emailing to friends, or displaying on your mobile phone. Convert or compress thousands of photos at a time with batch conversion. Preserve vector graphics when converting between vector formats. Resize images, add text captions and watermarks and even convert images from the right-click menu. Preview images before conversion, as well as image file format, compression settings, and dimensions for image resizing.
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