Context Window Optimizer
Trim long documents to fit context window
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Context window optimizer
Find what to trim from long content to fit the LLM context window.
How to use this tool
- 1
Paste your long content
Document, code, logs, any text.
- 2
Set target size
How many tokens you want to keep.
- 3
Get trim suggestions
Low-signal lines, redundant content, safe-to-cut sections.
Frequently Asked Questions
How are "low-signal" lines identified?
Short lines (likely noise), repeated lines, boilerplate headers/footers, lines of only punctuation, overly short sentences, duplicate paragraphs. Relevance scoring uses tf-idf-like term rarity.
Is this truly safe to cut?
The tool suggests candidates but YOU decide. Always review before deleting. For semantic-critical content (code, contracts, medical), use manual review — this tool helps but doesn't replace judgment.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.