Plasmate Benchmark Results (March 2026)
CDP Parity Benchmark (Lightpanda campfire-commerce)
Test: Puppeteer script navigates to a local product page, waits for JS-rendered content (product price, reviews from XHR), extracts structured data.
Result: PASS - All assertions pass consistently
| Metric | Value |
|---|---|
| Runs | 10 |
| Total duration | 3,165ms |
| Avg run duration | 308ms |
| Min run duration | 275ms |
| Max run duration | 348ms |
What this validates:
- CDP WebSocket server compatibility with Puppeteer
page.goto()with full JS pipeline executionpage.waitForFunction()pollingpage.evaluate()for DOM queries- XHR/fetch requests from V8 (blocking bridge)
- DOM serialization with JS-mutated content
Major Sites Speed Test
Engine: plasmate v0.3.0 URLs tested: 38 Successful: 36 (95%)
Summary
| Metric | Mean | Median | P95 |
|---|---|---|---|
| HTML bytes | 379,656 | 193,796 | 1,214,266 |
| SOM bytes | 22,759 | 22,034 | 56,625 |
| Compression ratio | 45.4x | 10.2x | 105.1x |
| HTML tokens (est) | 94,914 | 48,449 | 303,566 |
| SOM tokens (est) | 5,689 | 5,508 | 14,156 |
| Fetch time (ms) | 256 | 172 | 629 |
| Parse+SOM time (ms) | 20 | 16 | 61 |
Grade Distribution
| Grade | Count | Criteria |
|---|---|---|
| A | 12 | >15x compression |
| B | 8 | 8-15x compression |
| C | 9 | 3-8x compression |
| D | 4 | 1-3x compression |
| F | 3 | <1x or error |
Highlights
| Site | HTML | SOM | Compression |
|---|---|---|---|
| accounts.google.com | 1.2MB | 1.4KB | 864x |
| x.com (Twitter) | 239KB | 1.5KB | 159x |
| linear.app | 2.2MB | 21KB | 105x |
| bing.com | 157KB | 1.7KB | 93x |
| google.com | 194KB | 2.6KB | 74x |
| vercel.com | 941KB | 22KB | 43x |
| steampowered.com | 842KB | 23KB | 36x |
| duckduckgo.com | 391KB | 12KB | 33x |
| ebay.com | 831KB | 33KB | 25x |
| Wikipedia (USA) | 1.7MB | 70KB | 25x |
Performance Notes
- Parse+SOM time: Median 16ms for full HTML->SOM compilation
- Heavy JS sites: Excellent compression (login pages, SPAs) due to stripping non-essential markup
- Content-rich sites: Good compression (Wikipedia 10-25x, news sites 11-15x)
- Text-minimal sites: Lower ratios expected (text.npr.org, example.com)
Test Environment
- macOS, Apple Silicon
- Local network fetch (varies by site latency)
- No caching between runs