ComfyUI – Sentence Filter

A custom ComfyUI node that receives a text prompt from the workflow, removes or replaces sentences based on user-defined trigger words, and passes the filtered text to the next node.

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Features

• Works inline in your ComfyUI workflow – text in, text out
• Delete sentences that contain a single word or all words from a comma-separated list
• Replace sentences that contain all words from a comma-separated list with a custom sentence
• URL dots (e.g. www.example.com) are ignored during sentence splitting
• Optional case-sensitive matching
• Compatible with Python 3.13+

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Installation

cd ComfyUI/custom_nodes/
git clone https://github.com/Slartibart23/comfyui-sentence-filter.git

Restart ComfyUI. The node appears under text › processing as "Sentence Filter ✂️".

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Node Inputs

| Input | Type | Required | Description | |---|---|---|---| | text | STRING | ✅ | Input text prompt from the workflow | | delete_words | STRING | ➖ | Comma-separated words – sentence is deleted if it contains all of them | | replace_words | STRING | ➖ | Comma-separated words – sentence is replaced if it contains all of them | | replacement_sentence | STRING | ➖ | The sentence that replaces matched sentences | | case_sensitive | BOOLEAN | ➖ | Enable case-sensitive matching (default: off) |

Node Outputs

| Output | Type | Description | |---|---|---| | text | STRING | Filtered text, ready for the next node | | sentences_deleted | INT | Number of sentences deleted | | sentences_replaced | INT | Number of sentences replaced |

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How It Works

Delete – single word

delete_words = Watermark → Any sentence containing the word Watermark is removed.

Input:  "A beautiful photo. The watermark www.femjoy.com is in the corner. Enjoy."
Output: "A beautiful photo. Enjoy."

Delete – multiple words (AND logic)

delete_words = blonde, straight, young → A sentence is only removed if it contains all three words.

Input:  "Nice day. A young woman with straight hair of blonde color. The end."
Output: "Nice day. The end."

Replace

replace_words = blonde, straight, young replacement_sentence = A mature woman with brown curly hair

Input:  "Intro. A young woman with straight blonde hair. Outro."
Output: "Intro. A mature woman with brown curly hair. Outro."

Priority

If a sentence matches both delete_words and replace_words, deletion takes priority.

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Running Tests

cd comfyui-sentence-filter
pip install pytest
python -m pytest tests/ -v

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Requirements

• Python 3.13+
• ComfyUI (any recent version)
• No additional Python packages required

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License

MIT License – see LICENSE for details.