anonymous realtime imageboard focused on high performance, free speech and transparent moderation
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anonymous realtime imageboard focused on high performance, free speech and transparent moderation

Platforms: Linux, OSX, Win64

License: GNU AGPL


Posts and posting
  • Character by character post updates
  • Hovering quick reply for post authoring
  • Dice roll, coin flip and eightball commands
  • Desktop notifications and "(You)" links on quote
  • Post link hover previews, including cross-thread
  • Inline post link expansion
  • Optional relative post timestamps
  • Non-temporal and recursive post linking
  • No posts per thread or threads per board limit
  • Forced anonymity display mode
  • Post hiding
  • Option to display only the last 100 posts in a thread
  • Optional automatic deletion of unused threads and boards
  • Automatic URL linkification
  • Automatic intelligent quoting of selected text, when quoting a post
  • Live programming code tags with syntax highlighting
  • Automatic open post recovery after a disconnect
  • Toggleable non-live post creation
  • Keyboard post navigation
  • Explicitly visible sage
  • Responsive seen post detection
  • Score-based antispam system
  • Optional recursive post hiding
Files and images
  • JPEG, PNG, APNG, WEBM, MP3, FLAC, MP4, OGG, PDF, ZIP, 7Z, TAR.GZ, TAR.XZ, TXT are supported
  • Transparent PNG and GIF thumbnails
  • Configurable size limits
  • Inbuilt reverse image search
  • No file is ever thumbnailed or stored twice, reducing server load and disk space usage
  • Any file already present on the server is "uploaded and thumbnailed" instantly
  • Title metadata extraction
  • Gallery mode
  • Low memory and CPU usage
  • No frameworks and optimized code on both client and server
  • File upload processing written in C with GraphicsMagick and ffmpeg
  • Inbuilt custom multi-level LRU cache
Client UI
  • Works with all modern and most outdated browsers (such as PaleMoon)
  • Works with JavaScript disabled browsers
  • Multiple themes
  • Custom user-set backgrounds and CSS
  • Mascots
  • Configurable keyboard shortcuts
  • Work mode aka Boss key
  • Customisable top banner board link list
  • Optional animated GIF thumbnails
  • Settings export/import to/from JSON file
Board administration/moderation
  • Support for both centralized and 8chan-style board ownership
  • Global admin -> users notification system
  • User board creation and configuration panels
  • 4 tier staff system
  • Board-level and global bans
  • Transparent post deletion
  • Viewing of all post made by same IP
  • Deleting all posts with same IP
  • Option to disable search indexing on board
  • Sticky threads
  • Public ban list
  • Public moderation log
  • Mod image spoilering
  • Image banners
  • Custom per-board loading image
  • Default board theme setting
  • Optional poster country flag display
  • Option to hide NSFW boards from /all/
  • Client almost entirely localized in multiple languages
  • More languages can be added by editing simple JSON files
  • Documented public JSON API
  • Optional R/a/dio Now Playing banner
  • Synchronized time counters (for group watching sessions and such)
  • Thread-level connected unique IP counter
  • Internal captcha system

Runtime dependencies

Country flags

To enable poster country flags on posts please download GeoLite2-Country.mmdb from and place it inside meguca's root directory. Country lookup will become available after a server restart.

Building from source

A reference list of commands can be found in ./docs/

Build dependencies

  • Go >=1.11 (for building server)
  • Node.js >=5.0 (for building client)
  • C11 compiler
  • make
  • pkg-config
  • pthread
  • ffmpeg >= 3.1 libraries (libavcodec, libavutil, libavformat, libswscale) compiled with:
    • libvpx
    • libvorbis
    • libopus
    • libtheora
    • libx264
    • libmp3lame
  • GraphicsMagick compiled with:
    • zlib
    • libpng
    • libjpeg
    • postscript
  • ghostscript
  • git

Linux and OSX

  • Run make


  • Install MSYS2
  • Open MSYS2 shell
  • Install dependencies listed above with the mingw-w64-x86_64- prefix with pacman
  • Navigate to the meguca root directory
  • Run make


  • See ./meguca help for server operation
  • Login into the "admin" account via the infinity symbol in the top banner with the password "password"
  • Change the default password
  • Create a board from the administration panel
  • Configure server from the administration panel
  • To enable country flags on posts download and place GeoLite2-Country.mmdb into the root directory
  • To avoid having to always type in CLI flags on server start you can specify them in config.json file in the project root. A sample file with all the default settings can be found in docs/.


  • See ./docs for more documentation
  • ./meguca or ./meguca debug run the server in development mode
  • make server and make client build the server and client separately
  • make watch watches the file system for changes and incrementally rebuilds the client
  • make update_deps updates all dependencies
  • make clean removes files from the previous compilation
  • make dist_clean in addition to the above removes uploaded files and their thumbnails
  • To enable using Go tools in the project add the absolute path of ./go to your $GOPATH environment variable

C++ client

For developing the new C++ client

  • Run git submodule update --init --recursive
  • Install Emscripten
  • Ensure Emscripten environment variables by running source in your shell
  • Use DEBUG=1 make wasm and make wasm_clean to compile the C++ client and clean build directories
  • To use the C++ client for meguca add the ?wasm=true query string to the end of the URL