Text Splitter
Free online text splitter — chunking long text for tools with input limits.
Split long text into chunks — for AI models, publishing, and data processing
Large blocks of text frequently need to be divided for processing. AI language models have context window limits — you cannot submit a 50,000-word document to GPT-4 in one call. Content management systems limit article section lengths. Email sending tools restrict single-email text to a maximum character count. Data processing pipelines require text in fixed-size batches. ToolJiffy Text Splitter divides any text into chunks by delimiter, character count, word count, or sentence boundaries, entirely in your browser.
Five text splitting modes
- Split by delimiter: Divide text wherever a specific character or string appears — comma (
,) to parse CSV fields, pipe (|) to parse pipe-delimited data, tab (\t) to parse TSV format, or any custom multi-character string delimiter - Split by character count: Divide text into equal-length chunks of N characters each — ideal for chunking long documents to fit AI model context windows (4,096 characters for GPT-3.5, 8,192 for GPT-4, 100,000 for Claude 2)
- Split by word count: Divide text into sections of N words each — ideal for creating equal-length content sections for CMS publishing or document partitioning
- Split by sentence: Convert continuous prose into a one-sentence-per-line list — useful for sentence-level analysis, translation alignment, and annotation datasets
- Split by paragraph: Divide text at double-newline paragraph boundaries — the most natural split for structured long-form content
Chunking text for AI and LLM context windows
Large language models (LLMs) like GPT-4, Claude, and Gemini have fixed context window limits measured in tokens (approximately 0.75 words or 4 characters per token). When processing long documents — research papers, legal briefs, book chapters, or technical documentation — the document must be split into overlapping or sequential chunks that each fit within the model's context window. ToolJiffy's character-count split mode with configurable overlap handles this workflow precisely, with each chunk displayed and downloadable separately.
Browser-native configurable text chunking engine
ToolJiffy uses JavaScript String.prototype.split(delimiter) for delimiter-based splitting, Array.from({ length: Math.ceil(text.length / chunkSize) }, (_, i) => text.slice(i * chunkSize, (i + 1) * chunkSize)) for character-count chunking, and a sentence tokenizer for sentence-boundary splitting. Zip archive generation uses the JSZip library to package multiple chunks as numbered .txt files for batch download. All operations execute synchronously in your browser.
Step-by-step guide to splitting text
- Paste your text: Enter your long article, document, or data string into the text area above.
- Choose split mode: Select your splitting method (delimiter, character count, word count, sentence, or paragraph) and configure the parameters.
- Review and download chunks: View each chunk in the output panels and optionally download all chunks as a ZIP archive.
Frequently asked questions
How does the Text Splitter divide text in browser memory?
ToolJiffy splits text by delimiter, fixed character count, word count, or sentence boundaries — running 100% in browser memory with no server uploads.
What split delimiter types does Text Splitter support?
Supports splitting by character or string delimiter, newline, fixed character count, fixed word count, and sentence boundaries.
Is my text data uploaded to any cloud server?
No. All text splitting runs 100% locally in your browser. Your text never leaves your device.
How do I split text into chunks for AI language model context limits?
Use 'split by character count' and set the chunk size to your model's context window limit in characters (4096 for GPT-3.5, 100000 for Claude).
Can I split a CSV row string into individual column values?
Yes. Set the delimiter to comma and paste a CSV row to split it into individual field values, one per output line.
How do I split a long article into equal-length chunks?
Use 'split by word count' with your target section length. The splitter divides into equal-word-count sections while respecting sentence boundaries.
Can I split text and download each chunk as a separate file?
Yes. Click 'Download chunks as ZIP' to save each text chunk as a numbered .txt file inside a ZIP archive.
Is ToolJiffy Text Splitter free without limits?
Yes. ToolJiffy is 100% free with unlimited text processing, zero account registration, and zero server uploads.
Related text editing tools
Merge text lists with Text Merger, remove line breaks with Line Break Remover, count lines with Line Counter, or find and replace with Find and Replace.