| --- |
| dataset_info: |
| features: |
| - name: svg_mobile |
| dtype: string |
| - name: svg_tablet |
| dtype: string |
| - name: svg_desktop |
| dtype: string |
| - name: html |
| dtype: string |
| - name: url |
| dtype: string |
| - name: msps_mobile |
| dtype: float64 |
| - name: msps_tablet |
| dtype: float64 |
| - name: msps_desktop |
| dtype: float64 |
| - name: is_augmented |
| dtype: bool |
| - name: has_media_queries |
| dtype: bool |
| - name: page_sizes_desktop_width |
| dtype: int64 |
| - name: page_sizes_desktop_height |
| dtype: int64 |
| - name: page_sizes_tablet_width |
| dtype: int64 |
| - name: page_sizes_tablet_height |
| dtype: int64 |
| - name: page_sizes_mobile_width |
| dtype: int64 |
| - name: page_sizes_mobile_height |
| dtype: int64 |
| - name: svg_lengths_desktop |
| dtype: int64 |
| - name: svg_lengths_tablet |
| dtype: int64 |
| - name: svg_lengths_mobile |
| dtype: int64 |
| - name: page_data_size |
| dtype: int64 |
| splits: |
| - name: train |
| num_bytes: 196175064606 |
| num_examples: 353908 |
| download_size: 31683809119 |
| dataset_size: 196175064606 |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/train-* |
| license: apache-2.0 |
| --- |
| # Reverse Browser Large Dataset |
|
|
| This dataset contains paired HTML/CSS markup and vector-based SVG representations of over **350,000 real-world web pages**, rendered at three common screen sizes (mobile, tablet, desktop). It was collected from the public internet using a custom browser rendering pipeline. The dataset is designed for training and evaluating models that translate visual web designs to semantic, responsive markup. |
|
|
| ## Contents |
|
|
| Each entry in the dataset includes: |
|
|
| - **HTML**: A cleaned and compressed version of the page’s markup, stripped of `<script>`, `<iframe>`, `<video>`, and other non-visual elements, only retaining `<body>` outerHTML. CSS has been inlined. Images are not saved. |
| - `html`: The preprocessed HTML/CSS source |
| - **SVGs**: Three SVG representations of the page for the following viewport sizes: |
| - `svg_mobile` (393×852) |
| - `svg_tablet` (834×1210) |
| - `svg_desktop` (1440×900) |
| - **Metadata**: |
| - `url`: Original webpage URL |
| - `msps_mobile`, `msps_tablet`, `msps_desktop`: Multi-Scale Pixel Similarity (MSPS) score for each resolution |
| - `page_sizes_*`: Full-length page dimensions used during rendering |
| - `svg_lengths_*`: File sizes of SVGs (in bytes) |
| - `page_data_size`: Total size of HTML + CSSs (in bytes) |
| - `is_augmented`: Whether the entry used data augmentation (e.g. removing or permitting elements, changing properties) |
| - `has_media_queries`: Whether the original markup contained responsive CSS |
|
|
| ## Filtering Criteria |
|
|
| - Pages with blank screenshots (i.e., solid-color pages) were excluded. |
| - Entries where the **mobile** SVG’s MSPS score was lower than **0.99** were filtered out, ensuring near pixel-perfect visual fidelity between the SVG and the original screenshot. |
|
|
| ## MSPS Metric |
|
|
| **MSPS** (Multi-Scale Pixel Similarity) is a custom perceptual similarity score that compares full-page screenshots and rendered SVGs. It progressively downsamples the images and computes MSE at each scale. The final MSPS score is `1 - avg(MSE)`, giving higher values to more similar images. It’s stricter than common perceptual metrics (e.g., LPIPS or SSIM) and suited for filtering high-fidelity SVG-markup pairs. |
|
|
| ## Use Cases |
|
|
| This dataset supports research in: |
| - Image-to-Markup generation |
| - Responsive layout synthesis |
| - Visual reasoning from vector input |
| - Automation in web development and UI design |
|
|
| This dataset was produced with https://github.com/tcz/rb-crawler |
|
|
| https://arxiv.org/abs/2509.05394 |
