SkribblPro is a Chrome extension that injects a sleek overlay into skribbl.io and uses smart word filtering, hint matching, and frequency-based scoring to surface the most likely answers in real time — so you can guess the word before anyone else.
As letters are revealed on the board, SkribblPro instantly narrows down a list of possible words and displays them as clickable buttons at the bottom of your screen. Click any suggestion to submit it as your guess immediately.
Toggle Auto Guess on and SkribblPro will automatically submit guesses from the suggestion list on a timer. You control the interval in Settings.
When the hint narrows possibilities down to a single word, the extension submits it automatically — no click required.
SkribblPro uses three layers of intelligence to rank suggestions:
- Word frequency — words seen in previous rounds are ranked higher
- Letter position frequency — letters that commonly appear at each position in past answers are scored higher
- Bigram frequency — common letter pairs from past answers boost relevant words to the top
The top 20% of high-confidence words are highlighted in green so you can spot the best guesses at a glance.
The extension reads the game chat to eliminate words other players have already guessed, and uses Levenshtein distance to intelligently handle "close!" messages — instantly narrowing results to words that are exactly one letter off from the close guess.
Every correct answer is saved locally. Over time, SkribblPro builds a personal word frequency database so suggestions become smarter the more you play.
Track your total rounds played and total guesses made across all sessions, viewable from the Stats panel.
Open the Settings panel to customize:
| Setting | Description |
|---|---|
| Auto Guess Timer | How long (ms) between automatic guess submissions |
| Alphabetical Sort | Sort suggestions A–Z instead of by score |
| Sort by Frequency | Prioritize words seen most often in past games |
| Confidence Threshold | Only auto-guess when the word pool is ≤ N words |
| Smart Filtering | Toggle the AI-based scoring and pattern filtering on/off |
SkribblPro is a developer-mode extension — it is not listed on the Chrome Web Store. Follow the steps below to install it.
Option A: Clone the repository
git clone https://github.com/Umbra-Domini/SkribblPro.gitOption B: Download the ZIP
- Click the green Code button at the top of this page
- Select Download ZIP
- Extract the ZIP to a folder on your computer
- Chrome → go to
chrome://extensions - Edge → go to
edge://extensions - Brave → go to
brave://extensions - Opera → go to
opera://extensions
In the top-right corner of the Extensions page, toggle Developer mode ON.
You should now see three new buttons appear: Load unpacked, Pack extension, and Update.
- Click Load unpacked
- In the file picker, navigate to the folder you cloned or extracted in Step 1
- Select the root folder (the one that contains
manifest.json) - Click Select Folder (or Open)
The extension will appear in your list as SkribblPro with the green hat icon.
- Go to https://skribbl.io and join or create a game
- The SkribblPro bar will automatically appear at the bottom of your screen
- As the drawing progresses and letters are revealed, suggestions populate in real time
- Click a suggestion to instantly submit it, or enable Auto Guess to let the extension play for you
SkribblPro/
├── manifest.json # Extension configuration
├── content.js # Core extension logic
└── icons/
├── icon16.png
├── icon32.png
├── icon48.png
└── icon128.png
| Permission | Reason |
|---|---|
storage |
Save your word history, frequency data, stats, and settings locally |
host_permissions: skribbl.io |
Inject the overlay only on skribbl.io |
SkribblPro does not collect or transmit any data. Everything is stored locally in your browser.
Made by UmbraDomini