[Lazarus] Running FPC in the browser...

Michael Van Canneyt michael at freepascal.org
Sun Oct 22 12:20:47 CEST 2023


Thanks to the efforts of Nikolay Nikolov, the FPC compiler can now recompile
itself to webassembly (the support for the goto statement made this possible).

As a consequence, this means FPC can now be run in a browser. 
See the screenshot at


There are still some steps to do before FPC will actually compile and link a
program, but this is in the works as well.

If you think this is just a cute geeky achievement, it is not.

Think about the possibilities: being able to work without the need for an 
installation. Just go to a webpage and start developing as you would on your 

For teaching programming, a teacher does not need to provide anything except a
browser and still have all the possibilities he would have when using a 
No heavy server infrastructure is needed, everything happens in the browser.

No doubt, other possibilities will come to mind.

Stay tuned for more goodies from the FPC team :-)


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