Alternatives to SeaMonster for all platforms with any license

  • RIOT - Radical Image Optimization Tool icon

    RIOT - Radical Image Optimization Tool

    [The installer contains Opencandy. Be careful during the installation: Forum ] Saving images for web/email/other media with the best compression...

    Free Windows GIMP XnView IrfanView

    No features added Add a feature
    • Warning Installer contains Open Candy adware and potentially more: https://www.virustotal.com/en/file/5c69ba60d82abbf73c6ac27a0cf39b054cb5a7cbc6fc8a6cb00d4daa6e069b73/analysis/
  • Preview icon

    Preview

    Preview is a simple and elegant application by Apple for viewing and working with images and PDF documents. With a single click, Preview takes your PDF document full screen for an ideal reading or viewing experience. Quickly...

    Free Mac

    No features added Add a feature
  • XnConvert icon

    XnConvert

    XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux. It supports more than 400 file formats (jpeg, tiff, png, gif, camera raw, jpeg2000, WebP, OpenEXR, ...). You can...

    Free Mac Windows Linux

  • PNGGauntlet icon

    PNGGauntlet

    -Combines PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs -No image quality is lost — only file size -Converts JPG, GIF, TIFF, and BMP files to PNG -Ultra-configurable PNGGauntlet is a .NET program that uses Ken...

    Free Windows

  • NexusImage icon

    NexusImage

    NexusImage is a simple image viewer program. supported formats: JPEG, Bitmap, GIF, PNG, TIFF, ICO, WMF, EMF

    Free Windows

    No features added Add a feature
  • Free Opener icon

    Free Opener

    Free Opener allows users to view, edit and print many different types of files without having to download specialty software. Currently, the software supports over 80 different file formats including Microsoft Office Files (.doc...

    Free Windows

  • Universal Viewer icon

    Universal Viewer

    Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are: Images: all major graphics formats: JPG BMP ICO GIF PNG WMF TIFF PSD..., over 40 formats. Also RAW images from 400+ cameras are...

    Freemium Windows

    No features added Add a feature
  • FastStone MaxView icon

    FastStone MaxView

    FastStone MaxView is a fast, compact and innovative image viewer that supports all major graphic formats. Its intuitive layout lets you view images in a variety of ways. It even lets you view images in password-protected ZIP and RAR...

    Commercial Windows

    No features added Add a feature
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  • Photozoom Pro icon

    Photozoom Pro

    BenVista PhotoZoom Pro 5 is a software solution for enlarging and downsizing digital photos and graphics. PhotoZoom Pro 5 not only creates larger images than any other software (up to 1 million by 1 million pixels), it also...

    Commercial Mac Windows

    No features added Add a feature
  • Photo Size Optimizer icon

    Photo Size Optimizer

    A powerful photo resizer and optimizer for Mac, allows you to optimize all your photos by 80% ~ 20% comparing to their originals while keeping their original resolution, quality.

    Freemium Mac

    No features added Add a feature
  • PNGOUTWin icon

    PNGOUTWin

    You can use PNGOUTWin, an easy-to-use PNG optimizer, to create smaller image files and speed up your website, reach more potential customers, and decrease your bandwidth costs. You can convert and compress to PNG from TIFF, GIF, BMP...

    Commercial Windows

    No features added Add a feature
  • FILEminimizer Pictures icon

    FILEminimizer Pictures

    FILEminimizer Pictures from balesio compresses digital images and photos with file size reductions by up to 98%. For example, a JPEG photo with a size of 5 MB can be reduced to only 0.08 MB. The software features an innovative image...

    Free Windows

    No features added Add a feature
  • Shrink O'Matic icon

    Shrink O'Matic

    Shrink O'Matic is an AIR application to easily (batch) resize (shrink) images. It handles JPGs, GIFs and PNGs.

    Free Mac Windows

    No features added Add a feature
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  • Tinuous icon

    Tinuous

    An image converter batch-processing multiple files. JPEG lossless transformations are implemented. Options are shrink, rotation, correction, output file name setting, etc.

    Free Windows

  • ImageWell icon

    ImageWell

    ImageWell is a small, but powerful, image editing application that lets you quickly resize, crop, watermark, edit your images, take screenshots and then instantly upload them to the web, save to your computer or email them to a friend.

    Commercial Mac

    No features added Add a feature
  • Picture Resizer icon

    Picture Resizer

    PhotoResize is a simple tool for very fast batch resizing of photos and pictures in JPEG format. Beyond simple options however, Picture Resizer also contains support for seam-carving (changing size while preserving content), image...

    Free Windows

    No features added Add a feature
  • WinLep icon

    WinLep

    WinLep is a software that compresses JPG images to LEP saving 22%. WinLep compresses JPEG and decompresses LEP, moreover it can display JPEG and LEP compressed files.

    Commercial Windows

    No features added Add a feature
  • ImageSizer icon

    ImageSizer

    ImageSizer is an application built to resize, optimize and rename a batch of jpg images producing a zip file containing the images. ImageSizer also allows users to resize images that are greater than 2880px by 2800px, however the...

    Free Mac Windows Adobe AIR

  • ExifPro icon

    ExifPro

    ExifPro is an application meant to display, manipulate and browse photographs. ExifPro can display images in different view modes. Selected images may be copied, resized, cropped and adjusted. The standalone viewer window offers...

    Commercial Windows

    No features added Add a feature
  • Reshade icon

    Reshade

    Reshade offers the highest quality photo enlargement available for your computer. Resize images without the usual blur, jagged edges, halos, loss of sharpness or detail associated with image enlargement. Create accurate, crisp clear...

    Free Windows

    No features added Add a feature
  • WildBit Viewer icon

    WildBit Viewer

    WildBit Viewer is compact & fast image viewer with slide show and editor. Eye catching interface within blazing fast folder, file list and thumbnail viewer. Viewer includes also Image Info with Image EXIF meta data JPEG and TIFF...

    Free Windows

    No features added Add a feature
  • pngCrushrrr icon

    pngCrushrrr

    Drag your PNGs onto PNGCrushrrr and get super-optimized files ready to be emailed or posted on the web! Supports one or more files being dropped and instead of overwriting your original files, PNGCrushrrr outputs .crushed.png files...

    Free Mac

    No features added Add a feature
    • Discontinued Last version, 1.0, was released on April, 2005. It can be still downloaded from Wayback Machine.
  • Mini-Compressor icon

    Mini-Compressor

    Mini-Compressor is an easy to use image compression tool. Compress images by right clicking on the images or folder of images. A viable alternative to other photo editing software if all you need to do is quickly compress a image.

    Commercial Windows

    No features added Add a feature

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