Cloudflare Worker that compresses long text to fit memory limits — no external API calls required.
- Extractive summarization — scores sentences by word frequency, keeps the most informative ones
- Sliding window compression — chunks text into summary segments with configurable window size
- Keyphrase extraction — pulls top bigrams as a compact representation
- Zero dependencies — runs entirely on-Worker, no LLM or third-party API
- KV-cached results — SHA-256 keyed cache with 24-hour TTL
# Deploy to Cloudflare Workers
wrangler deploy
# Compress text via API
curl -X POST https://context-compactor.<your-subdomain>.workers.dev/api/compact \
-H "Content-Type: application/json" \
-d '{"text": "Your long text here...", "strategy": "extractive", "ratio": 0.3}'| Strategy | Description | Best for |
|---|---|---|
extractive | Top-N sentences by TF scoring | General compression |
sliding | Windowed chunk summaries | Very long documents |
keyphrase | Top bigrams as keyphrases | Keyword extraction |
{
"compacted": "Compressed text...",
"strategy": "extractive",
"inputLength": 5000,
"outputLength": 1500,
"compressionRatio": 0.3
}A Cocapn Fleet vessel. Part of the SuperInstance ecosystem for distributed AI operations.
Related repos:
- cocapn-shells — fleet shell infrastructure
- context-compactor-v2 — next-gen compactor
- context-lattice — context window management
Apache 2.0