PS-WASM: Rendering PostScript in browsers using Ghostscript.

This little wrapper allows Ghostscript to be run with WebAssembly in browser, and thus allows PostScript files to be opened with modern browsers directly.

Usage

1. Set up the EMScripten environmen following this tutorial.

2. If compiling from latest git repo: set up git, autoconf and automake.

3. Run ./compile.sh with the following parameters:

./compile.sh (--version=[latest|version.number]) (--browser=[chrome]) (--debug) (--skip_compile)

where the parameters are as follows:

• --version: specify latest to compile from latest git source, or a specific version number such as 10.05.0.
  • Note: some versions (such as 10.05.1) do compile but have bugs that prevent the program from running on certain files. Commit dedddcb of the git repo is the version used for the web store version of v0.4 of this extension.
• --browser: specify the target browser. Currently only chrome is supported.
• --debug: compile the debug version, which prints a lot more info to the console.
• --skip_compile: tell the script to assume the .wasm and .js files are already there and just pack the plugin. Useful for debugging.

4. The plugin is then located at extension/(browser)/ps-wasm.

License

Ocha 2025. Code licensed under AGPLv3.

Ghostscript is released by Artifex under AGPLv3 and can be found here.

Pako is written by Andrey Tupitsin and Vitaly Puzrin and can found here.