Web-Scale Multimodal Summarization using CLIP-Based Semantic Alignment

Mounvik K; N Harshit

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arXiv · 2602.14889

Web-Scale Multimodal Summarization using CLIP-Based Semantic Alignment

Mounvik K·N Harshit

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Abstract

We introduce Web-Scale Multimodal Summarization, a lightweight framework for generating summaries by combining retrieved text and image data from web sources. Given a user-defined topic, the system performs parallel web, news, and image searches. Retrieved images are ranked using a fine-tuned CLIP model to measure semantic alignment with topic and text. Optional BLIP captioning enables image-only summaries for stronger multimodal coherence.The pipeline supports features such as adjustable fetch limits, semantic filtering, summary styling, and downloading structured outputs. We expose the system via a Gradio-based API with controllable parameters and preconfigured presets.Evaluation on 500 image-caption pairs with 20:1 contrastive negatives yields a ROC-AUC of 0.9270, an F1-score of 0.6504, and an accuracy of 96.99%, demonstrating strong multimodal alignment. This work provides a configurable, deployable tool for web-scale summarization that integrates language, retrieval, and vision models in a user-extensible pipeline.

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BibTeX RIS

Mounvik K, N Harshit. 2026-02-16. Web-Scale Multimodal Summarization using CLIP-Based Semantic Alignment. https://arxiv.org/abs/2602.14889

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