Below is a list of the best, completely free image converter software programs. Some are even online services, meaning you can use them to convert pictures online without needing to download the program. Input Formats: GIF, PNG, TIFF, BMP, DIB, JFIF, PJPEG, JPG, PJP, HEIF, and HEIC Output Formats: JPG, PNG, PDF, and SVG This converter is extremely easy to use. Just upload one or more photos to the site, rotate any of them if necessary, and then pick from any of the supported output formats. You can download each converted file individually or together in an archive. This is an online converter, so it works from any operating system. Your uploads are deleted automatically after two hours. It also supports batch conversion, folder imports, filters, resizing, and several other advanced options. Input Formats: BMP, EMF, GIF, ICO, JPG, PCX, PDF, PNG, PSD, RAW, TIF, and many more Output Formats: BMP, EMF, GIF, ICO, JPG, PCX, PDF, PNG, PSD, RAW, TIF, and many more The publisher of XnConvert also has a free command line based, dedicated image converter called NConvert, but XnConvert is much easier to use. It runs on Windows, Mac, and Linux. There’s a portable option on the download page, available for both 32-bit and 64-bit versions of Windows and Linux. Input Formats: BMP, GIF, ICO, JPEG, PNG, and TIFF Output Formats: BMP, GIF, ICO, JPEG, PDF, PNG, and TIFF There is a file size limit on the original file you upload, but we can’t confirm the specific limit. Our tests indicate that the limit is somewhere between 35 MB and 40 MB. One thing we like about this option is that it lets you rotate and resize an image before you convert it. Then again, it isn’t as useful as it could be because it doesn’t show you a preview of what the rotated image will look like when converted. Since this method works through a web browser, you can use it with nearly any operating system, like Windows, Linux, and Mac. A file can be uploaded from your computer, a file storage service you use (Dropbox, Google Drive, etc.), or from another website via its URL. Input Formats: 3FR, AI, ARW, BMP, CR2, CRW, CDR, DCR, DNG, DWG, DXF, EMF, ERF, GIF, JPG, MDI, MEF, MRW, NEF, ODG, ORF, PCX, PEF, PNG, PPM, PSD, RAF, RAW, SR2, SVG, TGA, TIFF, WBMP, WMF, X3F, and XCF Output Formats: AI, BMP, EPS, GIF, ICO, JPG, PDF, PS, PCX, PNG, TGA, TIFF, and WBMP We’ve repeatedly tested Zamzar and have found the conversion time is often similar to FileZigZag’s (below), but since you can’t download multiple files at once or upload more than just a few, you might try an actual software program if you need something more robust. Input Formats: AI, BMP, CMYK, CR2, DDS, DNG, DPX, EPS, GIF, HEIC, ICO, JPEG, JPG, NEF, ODG, OTG, PAM, PBM, PCX, PGM, PNG, PPM, PSD, RGB, RGBA, SDA, SGI, SVG, SXD, TGA, TIF, TIFF, XCF, and YUV Output Formats: AI, BMP, CUR, DPX, EPS, GIF, ICO, JPEG, JPG, PAM, PBM, PCX, PDF, PGM, PNG, PPM, RAS, SGI, SVG, TGA, TIF, TIFF, and YUV Just like any online file converter, you have to, unfortunately, wait for the website to upload the file and then wait again for the download link (which could take a really long time as you wait in the queue). However, since most images are fairly small, it really shouldn’t take that long altogether. In its simplest form, it lets you drag and drop images into the queue, and quickly choose the output format. You can clearly see the size of the image files before and after they’ll be converted. There are also advanced options if you want to use them, such as custom file names and output directories, resolution and quality changes, and text/image overlays. Input Formats: JPG, PNG, BMP, TIFF, and GIF Output Formats: JPG, PNG, BMP, TIFF, and GIF We like Adapter because it seems to work very quickly and doesn’t require you to upload your files online to convert them. It not only converts image files, but also video and audio files. You can install this in Windows 11, 10, 8, or 7. It also runs on macOS 13 through 10.7. Input Formats: JPG, PNG, BMP, GIF, and TGA Output Formats: JPG, PNG, BMP, GIF, TGA, and PDF We like this program because it’s very simple to use, supports popular image formats, and includes some additional features you may not find bundled in with other image converters. Free Image Convert and Resize is said to run on Windows 11, 10, 8, 7, and XP. It supports batch conversions, the ability to import multiple photos from a folder at once, image rotation, resizing, and altering the image color. Input Formats: JPG, JPEG, GIF, PCX, PNG, BMP, and TIF Output Formats: JPG, GIF, PCX, PNG, BMP, and TIF This is a nice converter tool if you deal with these formats and would rather not use an online option. Windows 8, Windows 7, and Windows Vista are the only versions of Windows that are officially supported, but PixConverter works equally well in Windows 10 and probably other versions, too. This means you can set the default output format, quality, size option, and output folder to quickly convert images without having to open the program. Input Formats: BMP, PNG, JPEG, GIF, and TIFF Output Formats: BMP, PNG, JPEG, and GIF This download link takes you to a page that has several other programs listed, the bottom one being for SendTo-Convert. The supported operating systems listed on the download page are Windows 8, 7, Vista, and XP, but it should work just fine in Windows 11 and 10, too. You can also download a portable version.
