Human Typing Simulator

Simulate realistic human typing on any website. Configurable WPM, natural timing, QWERTY typo simulation, and keyboard shortcuts. Paste your text. Click your target field. Press Start. Watch it type itself — character by character, at human speed, with natural rhythm, realistic hesitations, and even occasional typos that get corrected on the fly. Whether you're filling out forms, writing in a web editor, or need text to appear as if someone typed it in real time — Human Typing Simulator handles it seamlessly on any website. WHY THIS EXTENSION EXISTS Many websites and platforms detect when text is pasted all at once and either block it, flag it, or format it incorrectly. Some tools require you to type content manually for it to register properly. Copy-pasting into rich text editors often strips formatting or breaks the editor's internal state. Human Typing Simulator solves all of this. It simulates actual keystrokes — one character at a time — the way a real person would type, including the natural speed variations, micro-pauses between sentences, and occasional finger slips that make typing feel authentic. HOW IT WORKS Copy the text you want to type Click the clipboard icon in the popup to paste it in Click the target field on the page (a textarea, input box, or rich text editor) Press [ Start Typing ] — or use the keyboard shortcut Alt+T The extension begins typing one character at a time into the active field, using real keyboard events that websites and JavaScript frameworks treat as genuine user input. A floating ⌨ activation button appears whenever you click or focus a recognized input field. Click it to open the extension popup with that field already detected — no need to open the popup first. FEATURES Natural Timing Engine Typing speed follows a Gaussian distribution — some characters come faster, some slower, just like real human rhythm. The WPM (words per minute) setting acts as a minimum floor: typing is frequently faster than the set value, never slower. Speed drifts in waves across the text, accelerating during common words and slowing slightly before unfamiliar ones. Sentence and Paragraph Pauses After a period or exclamation mark, the typer pauses 400–1800ms — like a person thinking about their next sentence. After a paragraph break, it waits 1200–4000ms, simulating the natural rhythm of composing text. QWERTY Typo Simulation When "Simulate Typos" is enabled, the extension occasionally types a nearby QWERTY key instead of the intended character — then catches the mistake, deletes it, and types the correct character. The adjacent-key algorithm mirrors real typing errors: "e" might become "r", "s" might become "a". The error rate is fully adjustable (0–20%). Cursor Lock While typing is in progress, mouse clicks on the page cannot move the text cursor. This prevents accidental position jumps that would cause text to be inserted in the wrong location. Live Progress Bar A progress bar in the popup shows how far through the text the typer has reached. The extension icon badge also displays percentage progress so you can monitor typing even while viewing other tabs. Works on Rich Text Editors The extension uses three parallel insertion methods: For contenteditable editors (Notion, Medium, Quip, Trix, etc.): uses execCommand('insertText') which generates events the browser marks as trusted — the same trust level as real keyboard input. For Google Docs: dispatches keyboard events directly into the hidden text event iframe that Google Docs uses to capture input, bypassing the canvas layer entirely. For standard textareas and input fields (Twitter, Reddit, contact forms, etc.): uses the native HTMLInputElement setter combined with InputEvent, making it compatible with React, Vue, Angular, and other JavaScript frameworks. Smart Element Detection The extension automatically detects the focused input element on the page. It checks the active element, looks inside Shadow DOM (for Reddit-style components), and searches inside same-origin iframes (for editors like Google Docs that use a hidden text event iframe). If you click away from the field before opening the popup, the extension remembers the last field you interacted with. KEYBOARD SHORTCUTS Alt+T — Start typing (uses last detected field and last pasted text) Alt+P — Toggle Pause / Resume Escape — Stop typing immediately All shortcuts are fully customizable via chrome://extensions/shortcuts. SETTINGS Simulate Typos (ON by default) Controls both QWERTY typo simulation AND random speed variation together. When ON, typing speed fluctuates naturally and occasional mistakes are made and corrected. When OFF, speed is flat and exact — every character takes the same time. Lock Cursor (ON by default) Prevents mouse clicks from repositioning the text cursor during typing. Turn OFF only if you need to interact with the page while typing is in progress. Show Icon (ON by default) Controls whether the floating ⌨ activation button appears when you focus an input field. Turn OFF to hide the overlay entirely and rely on the popup or keyboard shortcuts. Speed (WPM) — Range: 20–150 WPM, Default: 120 WPM Sets the typing speed. When Simulate Typos is ON, this is the minimum floor — actual typing will often be faster. When Simulate Typos is OFF, this is the exact speed with ±8ms jitter. Settings are saved automatically via Chrome sync storage — your preferences persist across browser sessions and devices. FLOATING ACTIVATION BUTTON Whenever you focus a recognized input field, a small ⌨ button appears near the top-right corner of that field. Clicking it opens the extension popup on Chrome 127 and above. This eliminates the common problem where opening the popup blurs the target field — the extension remembers which element you were interacting with and connects to it automatically. While typing is active, the ⌨ button is replaced by [⏸ PAUSE] and [■ STOP] quick-action buttons — allowing you to pause or stop typing directly on the page without opening the popup. The button repositions itself as you scroll or resize the window, always staying near the active field. PRIVACY Human Typing Simulator does not collect, transmit, or store any of your data on external servers. The text you paste into the extension lives only in your browser's local storage for the duration of your session. No user accounts, no tracking, no telemetry.