AI Text Splitter

A free online tool to split long texts into manageable chunks for AI prompts, APIs, or processing, aimed at developers, data scientists, and content teams.

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About This Tool

The AI Text Splitter ingests a single long text and returns an array of chunks sized for AI models with token limits. It offers adjustable chunk_size_tokens, optional overlap_tokens, and sentence-aware splitting to preserve meaning. The tool is designed for developers integrating prompts, data scientists preparing datasets, and content teams handling large documents. Conceptually, it segments content into logically bounded units that can be processed sequentially without losing context. Core value lies in predictable chunk boundaries, optional preservation of sentence structure, and an export-ready JSON structure for downstream pipelines. Users feed the input_text and configure how aggressively the content is divided. The system estimates token usage per chunk and can operate in language-specific modes when a language_hint is provided, improving token budgeting for multilingual content. Unique advantages include flexible overlap to maintain context across chunks and a simple heuristic token estimator that works without requiring model-specific tokenizers. Typical use cases include preparing large PDFs for model summarization, batching news articles for sentiment analysis, and segmenting long guidelines for rule-based processing. The tool emphasizes deterministic results, enabling reproducible experiments and consistent data pipelines while avoiding reliance on proprietary tokenizers. It is suitable for technical teams, content engineers, and researchers seeking a lightweight yet rigorous pre-processing step for AI workflows.

How to Use

Provide inputs: supply the input_text and set chunk_size_tokens. Choose method: enable sentence-aware splitting and adjust overlap_tokens as needed. Run calculation: initiate the split to generate chunks. Review outputs: inspect chunk_index, start_char, end_char, and token_count_est. Export results: download as JSON for ingestion into data pipelines or AI prompts.

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Frequently Asked Questions

Find Quick Answers

What does the tool output?
The tool outputs an array of chunk objects, each containing chunk_index, text, start_char, end_char, and token_count_est. This facilitates sequential processing and budgeting for AI prompts.
How is token_count_est calculated?
Token_count_est is a heuristic: tokens ≈ words_in_chunk × 1.25, rounded to the nearest integer. It provides a practical budget for API usage without relying on model-specific tokenizers.
Can I preserve sentence boundaries?
Yes. When split_on_sentences is enabled, the tool tries to end chunks at sentence boundaries. If a single sentence is longer than the chunk size, it may be split while preserving overall token budget.
What languages are supported?
The tool works best with English by default. A language_hint can be provided to adjust heuristics for non-English text; token estimates remain heuristic in non-English scenarios.

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