Recommendations for Allow Data URI

A downloadable extension

Geon FX
Simply stunning Particle Editor for GameMaker Studio 1-2 with a PNG and GIF Export
5.0/5 from 9 ratings
$9.99
JS click event handler for GameMaker
Open new tabs and perform other actions that require JS-level events in GM' web games.
Zip writer for GameMaker
Make Zip archives from GM games
5.0/5 from 3 ratings
Mannequin Character Generator
2D Character Portrait & VTuber Avatar Generator.
4.6/5 from 147 ratings
$29.99

From The Blog

FIST: Ultra Edition
A paranormal mercenary roleplaying game
5.0/5 from 413 ratings
$20
In bundle
Juice FX
Add animations to your images to make them juicy!.
4.6/5 from 97 ratings
$14.96
In bundle
MiniMeters
A persistent audio metering app.
4.9/5 from 95 ratings
$10
Equirectangular Viewer
GMS 2 tool for viewing 360° textures.
TJSON for GameMaker
Better and safer JSON functions.
5.0/5 from 3 ratings
$3.95
Chromium browser in GameMaker
Embed a full web browser in your game
4.3/5 from 3 ratings
Retro Palette Swapper - for GameMakerStudio 1 & 2
Create one sprite, have unlimited possibilities!
5.0/5 from 10 ratings
Pixel Fx Designer
Design pixelart effects and render them to .png sprite sheets or .gifs
4.7/5 from 124 ratings
$14.96
In bundle
Gameframe
Custom window frame for GameMaker games
5.0/5 from 2 ratings
$19.95
GMLive.gml for GameMaker
Code and asset live-reloading for GameMaker!
4.9/5 from 66 ratings
$29.95
Dialogue Designer
A branching dialogue editor for game developers. Can be used with any game engine / framework.
3.9/5 from 28 ratings
$9.99
Blog tip jar
5.0/5 from 1 rating
Tiny Expression Runtime
Execute code snippets in your GameMaker games
Browser file tools for GameMaker
Text/image pasting, drag 'n drop, and file picking for GameMaker games on HTML5 target
5.0/5 from 1 rating
gml_string
GML syntax highlighting for games, websites, and more
$9.95
Font License - Single
For commercial use
$15