HTML Speed Boost 100x

Control client-side HTML5 and JavaScript timer speed from 0.1x to 100x.

HTML Speed Boost 100x is a Chrome extension that lets you control the speed of client-side HTML5 and JavaScript timers on web pages, from 0.1× up to 100×. Speed up supported animations, timers, and web interfaces for testing, debugging, development, and experimentation. Features --- Adjustable speed — set any speed from 0.1× to 100× using the real-time slider. --- Quick speed presets — instantly switch between 1×, 2×, 5×, 10×, 25×, and 100×. Customize the presets to match your workflow. --- Keyboard and mouse shortcuts — assign your own keyboard key or mouse button to quickly switch between your selected speed and normal speed (1×). --- Enable / disable toggle — turn speed control on or off whenever needed. --- Dark & light themes — choose the appearance you prefer. --- English & Russian — use the interface in either English or Russian. --- Timer controls — control selected client-side timing functions, including setTimeout, setInterval, performance.now, Date.now, and requestAnimationFrame. --- Built-in FAQ — quickly find explanations for the extension's controls and features. --- Local settings — your preferences are stored locally in your browser. Important The extension modifies client-side timing behavior. It does not speed up the website's server, network requests, or server-side processing. Some features may not be affected, especially on websites that rely on server-side timers, protected timing mechanisms, WebAssembly, or remote validation. Compatibility depends on how each website is implemented.