metadata
dataset_info:
- config_name: code_edit
features:
- name: unique_index
dtype: int64
- name: item_name
dtype: string
- name: image
dtype: image
- name: edit_prompt
dtype: string
- name: difficulty_level
dtype: string
- name: change_identify
dtype: string
- name: original_code
dtype: string
- name: edited_code
dtype: string
- name: git_diff
dtype: string
splits:
- name: english
num_bytes: 87865093
num_examples: 165
- name: french
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num_examples: 68
- name: german
num_bytes: 35880444
num_examples: 67
- name: spanish
num_bytes: 51186760
num_examples: 75
download_size: 214624153
dataset_size: 214624153
- config_name: mockup2code
features:
- name: image
dtype: image
- name: ground_truth
dtype: image
- name: sketch_type
dtype: int64
- name: language
dtype: string
splits:
- name: English
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num_examples: 397
- name: French
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num_examples: 91
- name: German
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num_examples: 87
- name: Spanish
num_bytes: 14543797
num_examples: 19
download_size: 554300367
dataset_size: 554300367
- config_name: web_qa
features:
- name: image
dtype: image
- name: question
dtype: string
- name: ground_truth
dtype: string
- name: question_type
dtype: string
- name: language
dtype: string
splits:
- name: english
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num_examples: 1476
- name: french
num_bytes: 78736984
num_examples: 535
- name: german
num_bytes: 94020693
num_examples: 620
- name: spanish
num_bytes: 98382195
num_examples: 640
download_size: 577713145
dataset_size: 577713145
configs:
- config_name: code_edit
data_files:
- split: english
path: code_edit/english-00000-of-00001.parquet
- split: french
path: code_edit/french-00000-of-00001.parquet
- split: german
path: code_edit/german-00000-of-00001.parquet
- split: spanish
path: code_edit/spanish-00000-of-00001.parquet
- config_name: mockup2code
data_files:
- split: English
path: mockup2code/English.parquet
- split: French
path: mockup2code/French.parquet
- split: German
path: mockup2code/German.parquet
- split: Spanish
path: mockup2code/Spanish.parquet
- config_name: web_qa
data_files:
- split: english
path: web_qa/english.parquet
- split: french
path: web_qa/french.parquet
- split: german
path: web_qa/german.parquet
- split: spanish
path: web_qa/spanish.parquet
WebMMU: The Web Multimodal Understanding Benchmark
WebMMU is a comprehensive benchmark designed to push the boundaries of AI for the web. It challenges models to answer questions about websites, edit real HTML/CSS/JS code, and generate web layouts from mockups—across four languages and 20+ domains. Whether you're building smarter web agents or testing the limits of multimodal models, WebMMU is your go-to testbed.
Key Features
- 🌐 Multilingual: English, Spanish, German, French
- 🧩 Three Core Tasks: WebQA, Code Editing, Mockup2Code
- 🖥️ Real-World Data: 20+ website domains
- 🔍 Fine-Grained Evaluation: Web Understanding & Reasoning, Agentic UI Action, and Code Generation
- 🤝 Open & Human-Annotated: Expert-verified, high-quality samples
Tasks Overview
WebQA
Answer questions about real website screenshots—test your model's ability to reason, ground, and understand UI elements and content.
Mockup2Code
Turn hand-drawn or digital mockups into working HTML/CSS code. Evaluate how well your model translates design into code.
Code Editing
Edit real website code based on user instructions. Can your model make precise, functional changes to HTML, CSS, or JS?
Dataset Stats
| English | Spanish | German | French | Total | |
|---|---|---|---|---|---|
| Website Images | 392 | 133 | 130 | 131 | 786 |
| WebQA | 1476 | 484 | 379 | 456 | 2795 |
| Mockup2Code | 180 | 93 | 85 | 78 | 436 |
| Code Editing | 165 | 75 | 67 | 68 | 375 |
| Total | 2213 | 785 | 661 | 733 | 4392 |