Free, open-source file converter. Convert 263 formats offline by drag & drop — images, PDF, Word, Excel, PowerPoint, HWP/HWPX, video, audio, e-books and archives. No upload, no Office needed.
- audio-converter
- avalonia
- batch-conversion
- converter
Repository Index
60,121 visible repositories in the index
1–17 of 17 · Most stars
ImageMagick is a free, open-source software suite for creating, editing, converting, and displaying images. It supports 200+ formats and offers powerful command-line tools and APIs for automation, scripting, and integration across platforms.
- imagemagick
- image-conversion
- image-manipulation
- image-processing
🏞 A fast, open-source, modern image viewer for 90+ formats – including WEBP, GIF, SVG, AVIF, JXL, HEIC and more – built for smooth browsing across Windows, macOS, and Linux.
- image-viewer
- photo-viewer
- imageglass
- picture-viewer
Caesium is an image compression software that helps you store, send and share digital pictures, supporting JPG, PNG, WebP and TIFF formats. You can quickly reduce the file size (and resolution, if you want) by preserving the overall quality of the image.
- image-compression
- caesium
- libcaesium
- compression
Wrangling Untrusted File Formats Safely
- parsing
- memory-safety
- programming-language
- codec
Go minifiers for web formats
- minifier
- go
- html
- js
An open file format for infinite canvas data.
- canvas
- formats
- json
- jsoncanvas
Reading, writing, and processing images in a wide variety of file formats, using a format-agnostic API, aimed at VFX applications.
- images
- image-processing
- texture
- vfx
A production-ready C++ vector graphics engine supporting SVG and Lottie formats, featuring advanced rendering backends such as WebGPU for high-performance graphics.
- animation
- 2d-graphics
- embedded
- graphics-library
Dart Image Library for opening, manipulating, and saving various different image file formats.
- dartlang
- image
- image-processing
- jpeg
Dockerized application that resizes and crops images on the fly, delivering optimized images in formats such as AVIF, WebP, MozJPEG, or PNG using ImageMagick, with an efficient caching system.
- image-processing
- resize-images
- crop-image
- mozjpeg
libass is a portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format.
- substation-alpha
- libass
- c
- subtitle-formats
Graphics32 is a graphics library for Delphi and Lazarus. Optimized for 32-bit pixel formats, it provides fast operations with pixels and graphic primitives. In most cases Graphics32 considerably outperforms the standard TBitmap/TCanvas methods.
Imgcompress is a self-hosted image processing toolbox that handles compression, format conversion, and AI background removal in a single web interface. It supports over 70 input formats (including PSD, HEIC, and RAW) and can output common formats or generate PDFs, all without sending files to external services.
- imagecompression
- imageoptimizer
- self-hosted
- webtool
Fast, memory-safe camera RAW decoder in Rust: ~40 formats, SIMD, GPU, WebAssembly, ICC colour management. CLI, C, C++, Python and JavaScript bindings.
- camera-raw
- decoder
- dng
- image-processing
ExImageInfo is an Elixir library to parse images (binaries) and get the dimensions (size), detected mime-type and overall validity for a set of image formats. It is the fastest and supports multiple formats.
- elixir
- elixir-lang
- elixir-library
- image-processing
Capacitor plugin for efficient image compression supporting PNG, JPEG, and WebP formats across iOS, Android, and Web platforms