Browse free open source Image Viewers and projects below. Use the toggles on the left to filter open source Image Viewers by OS, license, language, programming language, and project status.

  • Claims Processing solution for healthcare practitioners. Icon
    Claims Processing solution for healthcare practitioners.

    Very easy to use for medical, dental and therapy offices.

    Speedy Claims became the top CMS-1500 Software by providing the best customer service imaginable to our thousands of clients all over America. Medical billing isn't the kind of thing most people get excited about - it is just a tedious task you have to do. But while it will never be a fun task, it doesn't have to be as difficult or time consumimg as it is now. With Speedy Claims CMS-1500 software you can get the job done quickly and easily, allowing you to focus on the things you love about your job, like helping patients. With a simple interface, powerful features to eliminate repetitive work, and unrivaled customer support, it's simply the best HCFA 1500 software available on the market. A powerful built-in error checking helps ensure your HCFA 1500 form is complete and correctly filled out, preventing CMS-1500 claims from being denied.
  • Let your volunteer coordinators do their best work. Icon
    Let your volunteer coordinators do their best work.

    For non-profit organizations requiring a software solution to keep track of volunteers

    Stop messing with tools that aren’t designed to amplify volunteer programs. With VolunteerMatters, it’s a delight to manage everything in one place.
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    LIBPNG: PNG reference library
    Reference library for supporting the Portable Network Graphics (PNG) format.
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    Downloads: 105,083 This Week
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  • 2
    WinDjView

    WinDjView

    A fast, compact, and powerful DjVu viewer

    WinDjView is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous scrolling and advanced printing options, based on free DjVuLibre library. MacDjView is a simple DjVu viewer for Mac OS X, also with continuous scrolling.
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    Downloads: 12,528 This Week
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  • 3
    Skim

    Skim

    A PDF Reader and Note-taker for OS X

    Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim requires OS X 10.10 or higher.
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    Downloads: 8,564 This Week
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  • 4
    SageThumbs

    SageThumbs

    Powerful Windows shell extension allowing to preview images.

    SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats directly in Windows Explorer by using Pierre-e Gougelet's GFL library (XnView's author). Please read carefully the following information: As SageThumbs is a Windows Explorer context menu extension, there is no an executable file that you should launch to bring it up. To use it, just open any folder with image files in Windows Explorer, and then right-click a file you want to preview. You'll see the thumbnail immediately in the context menu. System Requirements: * Windows XP/2003/Vista/2008/7/2012/8/8.1 32/64-bit * About 5 Mb of disk space + additional space for cache
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    Downloads: 4,971 This Week
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  • EBizCharge Payment Platform for Accounts Receivable Icon
    EBizCharge Payment Platform for Accounts Receivable

    Getting paid has never been easier.

    Don’t let unpaid invoices limit your business’s growth. EBizCharge plugs directly into the tools your business already uses to speed up payment collection.
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    gPhoto
    gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.
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    Downloads: 3,811 This Week
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  • 6
    JPEGView - Image Viewer and Editor

    JPEGView - Image Viewer and Editor

    Lean and fast image viewer with minimal GUI

    JPEGView is a lean, fast and highly configurable viewer/editor for JPEG, BMP, PNG, WEBP, TGA, GIF and TIFF images with a minimal GUI. Basic on-the-fly image processing is provided - allowing adjusting typical parameters as sharpness, color balance, rotation, perspective, contrast and local under-/overexposure.
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    Downloads: 2,950 This Week
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  • 7

    GraphicsMagick

    Swiss army knife of image processing

    GraphicsMagick provides a set of commandline tools and programming APIs for manipulating, editing, and converting raster and vector images. It is derived from ImageMagick, with the objective of providing better stability and performance than ImageMagick while retaining the original MIT/X11 license.
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    Downloads: 2,569 This Week
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  • 8
    FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!
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    Downloads: 2,261 This Week
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  • 9
    The Animated Portable Network Graphics (APNG) is an unofficial extension of the Portable Network Graphics (PNG) format. APNG patch provides APNG support to libpng.
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    Downloads: 3,313 This Week
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  • Propelling Payments for Software Platforms Icon
    Propelling Payments for Software Platforms

    For SaaS businesses to monetize payments through its turnkey PayFac-as-a-Service solution.

    Exact Payments delivers easy-to-integrate embedded payment solutions enabling you to rapidly onboard merchants, instantly activate a variety of payment methods and accelerate your revenue — delivering an end-to-end payment processing platform for SaaS businesses.
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    DjVu is a web-centric format for distributing documents and images. DjVu was created at AT&T Labs-Research and later sold to LizardTech Inc. DjVuLibre is a GPL implementation of DjVu maintained by the original inventors of DjVu.
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    Downloads: 2,113 This Week
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  • 11
    MComix

    MComix

    GTK+ comic book viewer.

    MComix is a user-friendly, customizable image viewer. It is specifically designed to handle comic books (both Western comics and manga) and supports a variety of container formats (including CBR, CBZ, CB7, CBT, LHA and PDF). MComix is a fork of Comix.
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    Downloads: 1,787 This Week
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  • 12
    GPXSee

    GPXSee

    GPS log file viewer and analyzer

    GPS log file viewer and analyzer with support for GPX, TCX, KML, FIT, IGC, NMEA, SLF, SML, LOC, GPI, GeoJSON and OziExplorer files.
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    Downloads: 1,683 This Week
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  • 13
    digiCamControl

    digiCamControl

    Free camera control solution

    digiCamControl is an free and open source software. This allows you to save time by transferring images directly from your camera to your computer as you take each shot and allow to control camera shooting parameters.
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    Downloads: 2,139 This Week
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  • 14
    DJV

    DJV

    DJV provides professional review software for VFX, animation, and film

    DJV provides professional review software for VFX, animation, and film production. Playback high resolution, high bit-depth, image sequences and videos, with frame accurate control and color management. Available for Linux, Apple macOS, and Microsoft Windows. Source code is provided under a BSD style open source license.
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    Downloads: 1,303 This Week
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  • 15
    Cool Reader

    Cool Reader

    A cross-platform XML/CSS based eBook reader

    CoolReader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Supported formats: FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, MOBI. Platforms: Win32, Linux, Android. Ported on some eInk based devices.
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    Downloads: 960 This Week
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  • 16
    Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).
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    Downloads: 998 This Week
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  • 17

    Developer's Image Library

    A full featured cross-platform image library

    Developer's Image Library (DevIL) is a cross-platform image library utilizing a simple syntax to load, save, convert, manipulate, filter and display a variety of images with ease.
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    Downloads: 587 This Week
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  • 18

    Pix

    Image management application

    Pix is an image management application with image viewing, browsing, organizing and editing capabilities. It is part of the X-Apps project, which aims at producing cross-distribution and cross-desktop software. Pix supports numerous image types including: BMP, JPEG, GIF, PNG, TIFF, TGA, ICO and XPM; with optional support for RAW and HDR (high dynamic range) images. It is also able to view EXIF data attached to JPEG images. Pix has its own set of image editing tools that enable you to make color, hue, saturation, lightness and contrast adjustments, as well as a number of advanced tools such as slide shows, converting image format and more.
    Downloads: 19 This Week
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  • 19
    GeoTools, the Java GIS toolkit

    GeoTools, the Java GIS toolkit

    Toolkit for working with and mapping geospatial data

    GeoTools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data. GeoTools is an Open Source Geospatial Foundation project. The GeoTools library data structures are based on Open Geospatial Consortium (OGC) specifications.
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    Downloads: 392 This Week
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  • 20
    Luminance HDR

    Luminance HDR

    Complete solution for HDR photography

    Luminance HDR is a complete suite for HDR imaging workflow. It provides a wide range of functionalities, during both the fusion stage and the tonemapping stage. Its graphical user interface, based on Qt5, runs on a variety of platforms, such as Microsoft Windows, Mac OS X 10.9 and later and several Unix flavors (Linux, FreeBSD and others). Input images can be supplied in multiple formats, from JPEG to RAW files. In the same way, output can be saved in many different formats as well, from JPEG to TIFF (both 8 bit and 16 bit per channel), enabling all the power of your post processing tools.
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    Downloads: 359 This Week
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  • 21
    libmng -THE reference library for reading, displaying, writing and examining Multiple-Image Network Graphics. MNG is the animation extension to the popular PNG image-format.
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    Downloads: 1,840 This Week
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  • 22
    Fonts and font metrics customarily distributed with Ghostscript. Currently includes the 35 standard PostScript fonts and a grab-bag of others.
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    Downloads: 632 This Week
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  • 23
    GIF Viewer

    GIF Viewer

    Windows 7/8/10-compatible animated .gif player

    A C# program used to visualize and extract frames from .GIF files. (you need .NET Framework 3.5 installed on your computer)
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    Downloads: 218 This Week
    Last Update:
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  • 24
    Ginkgo CADx
    Ginkgo CADx is an extensible multi-platform Open Source Medical Imaging software which provides a complete DICOM Viewer solution with advanced capabilities.
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    Downloads: 240 This Week
    Last Update:
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  • 25
    MeshLab

    MeshLab

    A processing system for 3D triangular meshes

    MeshLab, a mesh processing system, for user assisted editing, cleaning, filtering and rendering of large unstructured 3D triangular meshes (typical 3D scanning meshes). The system relies for mesh processing tasks on the gpl VCG library (vcg.sf.net).
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    Downloads: 183 This Week
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Guide to Open Source Image Viewers

Open source image viewers are programs that provide users with a way to view digital images. These types of programs are usually made available at no cost, and they often include the source code that was used to create them. This code is made publicly available, allowing anyone to make modifications or create new versions of the program.

The primary benefit of using an open source image viewer is that it allows developers to customize and enhance the program’s features as much as they like without having to pay for expensive licenses or worry about copyright infringement. Additionally, open source viewers typically have more features than proprietary viewers, such as support for a greater range of file formats and additional functionality like annotation tools and batch processing capabilities.

Popular open source image viewers can be found in many operating systems by default, such as Windows Photo Viewer on Windows machines, Preview on Mac OS X systems, and Eye Of Gnome in Ubuntu Linux distributions. They also come bundled with some popular photo editing suites like Adobe Photoshop Elements.

For those who want even more features such as multi-document support or basic editing capabilities, there are several dedicated third-party open source image viewers available online. Examples include IrfanView (for Windows), GIMP (for Linux), XnView (cross platform), Imview (Mac OS X), Picasa (Windows/MacOS) and FastStone Image Viewer (Windows).

In terms of security features, most open source software tends to be more secure than their proprietary counterparts due to the fact that anyone can examine its code for vulnerabilities or malicious activities. However this should not be taken for granted - users should still take precautions when downloading any type of software from unknown sources.

Features Offered by Open Source Image Viewers

  • Image Resizing: This feature allows you to adjust the size of your images so they can be used in different contexts, such as web pages, email attachments, or print media.
  • Cropping: This tool enables you to select a portion of an image and remove any unwanted elements surrounding it.
  • Color Adjustment: Open source image viewers typically offer basic color adjustment capabilities such as brightness/contrast/saturation tweaks, as well as more advanced adjustment tools like curves or levels adjustments.
  • Image Filters: These allow for quick editing tasks such as sharpening, blurring, and noise reduction.
  • Layer Support: Many open source image viewers provide layer support which allows users to create multi-layered compositions from multiple images or simple drawings. Each layer can then be rotated, scaled, distorted and blended with other layers for advanced photo manipulation.
  • Add Text Annotations: Many viewers have the ability to add text captions onto images automatically along with a wide range of customizable font options including bolding, italicizing and underlining text annotations if necessary.
  • Zoom/Pan/Rotate Tools: Such tools enable you to quickly zoom in or out on an image while also enabling panning across large scenes or rotating them around any axis when required.
  • Histogram Viewer & Color Pickers: Advanced color picker tools help determine exact colors present within the photo along with histograms aiding analysis of how much information there is in each channel (e.g Red/Green/Blue).

What Are the Different Types of Open Source Image Viewers?

  • Graphic Viewers: Graphic viewers are programs that allow users to view, modify and create graphics in a variety of image file formats. These tools are typically used for digital art, photography and web design.
  • Image Conversion Software: Image conversion software allows users to convert images from one file format to another. This type of program is often used when images need to be edited or resized for different applications.
  • Slideshow Creator Software: Slideshow creator software enables users to assemble slideshows with background music and special effects. This type of program is commonly used for creating home movies, presentations and special events slideshows.
  • Photo Editing Software: Photo editing software provides tools that enable users to edit photos using features such as cropping, color enhancement and text overlay. It is also used for touch ups such as blemish removal, sharpening blurry photos and fixing red-eye effects.
  • Video Editing Software: Video editing software allows users to record video clips, add audio tracks and apply transitions between clips. This type of program can be used for creating home movies or editing existing videos from devices like cameras or phones.

Benefits Provided by Open Source Image Viewers

  1. Cost Efficient: Open source image viewers are often free and come with no upfront costs. This helps businesses and individuals save on software costs, since they don't need to pay for expensive commercial programs.
  2. Flexibility: Open source image viewers can be customized to meet the needs of businesses or individuals. It is easier to create personalized workflows and create an interface that suits the user's needs when it comes to an open source viewer than a closed-source one.
  3. Security: Since open source image viewers are available to anyone, many developers have worked on them, which makes them more secure than a program produced by just one company. This means less chance of malicious code being present in the application as well as any potential security risks being addressed quickly by the community.
  4. Innovative Features: Since anyone can view, modify, and redistribute open source applications, developers can easily add new features or improve existing ones very quickly compared to their closed-source counterparts. This allows users access to innovative features faster compared to other image viewers.
  5. Cross Platform Compatibility: Many of these open source programs are available for multiple operating systems such as Windows, Mac OS X, Linux etc., making them compatible with a variety of devices and platforms, so users don’t need separate applications for all of their computers or phones.

What Types of Users Use Open Source Image Viewers?

  • Professional Photographers: Professional photographers use open source image viewers to quickly review large batches of photos and adjust any necessary settings.
  • Graphic Designers: Graphic designers often use open source image viewers to make adjustments on graphics before they are finalized.
  • Amateur Photographers: Amateur photographers may find open source image viewers helpful in processing their own images at a much lower cost than using specific photography-based programs.
  • Researchers & Scientists: Researchers and scientists may use open source image viewers to help them analyze data collected from scientific experiments or research projects.
  • Video Editors & Animators: Video editors and animators often leverage open source image viewers when they need to make small adjustments on digital media files prior to exporting the final product.
  • Students & Educators: Students and educators may take advantage of free, open source image viewers for educational purposes. These viewers allow teachers and students a great way to view multiple multimedia files with ease, including images, audio, video, etc.
  • Hobbyists & Enthusiasts: Hobbyists and enthusiasts who enjoy photo manipulation or creating digital art may find that an open source viewer provides all the features they need in order to produce stunning works of art.

How Much Do Open Source Image Viewers Cost?

Open source image viewers are typically free to use. However, depending on the specific open source viewer you choose, some may have a cost associated with them in the form of donations or subscriptions. For example, GIMP is an open source image editor and viewer that is completely free to use, but does offer donations to help support the development team. Some other popular open source image viewers like Adobe Lightroom may require a paid subscription in order to access all of their features.

No matter which open source image viewer you decide to use, you will likely be able to find one that fits within your budget. The amount you spend will depend on how many features and capabilities you require for your needs. Ultimately, the cost of using an open source image viewer can range from zero dollars to several hundred dollars per year depending on how much functionality and customization you need.

What Software Can Integrate With Open Source Image Viewers?

Open source image viewers can integrate with many types of software. For example, they can be integrated with document processors like Word and LaTeX, which allow you to use the viewer to view images that are part of a document. They can also be integrated with video editing software, allowing you to view still frames from videos as well as individual images. Additionally, open source image viewers can also be integrated with photo editors, allowing users to perform basic editing operations on images without leaving the viewer. Finally, open source image viewers can also integrate with web browsers and other internet-based applications, enabling users to view online content such as webpages or video streams directly in the viewer.

Recent Trends Related to Open Source Image Viewers

  1. Open source image viewers are becoming increasingly popular among users due to their flexibility and cost-effectiveness.
  2. These viewers offer features such as a basic viewer with annotation, cropping, and other editing capabilities, making them suitable for many users’ needs.
  3. The support and development of open source image viewers is often provided by volunteer communities, making it easier for users to find help when they need it.
  4. Open source image viewers also tend to use fewer system resources than proprietary viewers, making them more efficient and lightweight.
  5. Some open source image viewers are even able to read or write to certain proprietary file formats, making them useful for cross-platform compatibility.
  6. Open source image viewers can also be easily customized with plugins and add-ons, allowing users to extend the functionality of the software to meet their needs.
  7. Finally, open source image viewers tend to have a much lower cost of entry than their proprietary counterparts and are often free to download and use.

How To Get Started With Open Source Image Viewers

  1. Research the available options: Before selecting an open source image viewer, you should research what’s out there so you can choose one that best meets your needs. There are many different types of programs available, including those with basic editing capabilities and those designed for more advanced users. Look for reviews and recommendations online to help narrow down your choices.
  2. Download the viewer: Once you've identified an image viewer you'd like to use, download it from its official website or another trusted source, such as an app store or online market. Follow all instructions provided by the owner or developer of the program and make sure it's compatible with your operating system before installing it on your machine.
  3. Become familiar with the interface: Spend some time exploring the user interface and getting familiar with how the program works before diving into editing photos or creating new images. Most open source programs have tutorials that explain how to perform certain tasks within the application, so take advantage of them if possible.
  4. Get creative: While learning how to use new software can be intimidating at first, once you become comfortable with it, you can start playing around and get creative. Try different edits and effects on images, experiment with combining multiple photos into one collage, or create something completely unique from scratch. Open source photo viewers often come loaded with lots of helpful tools for creating stunning visuals in no time at all – so don’t be afraid to have fun.