Sentence Splitter / Combiner
Split long sentences or combine short sentences to improve readability and accessibility. Adjust sentence length for better comprehension and readability scores.
Table of Contents
What is a Sentence Splitter / Combiner?
A sentence splitter / combiner is a tool that helps you optimize sentence length for better readability and accessibility. It can split long, complex sentences into shorter, more digestible ones, or combine short, choppy sentences into more flowing prose.
Research shows that optimal sentence length varies depending on your audience and purpose. For general readability, sentences between 15-20 words (approximately 75-100 characters) are ideal. Very long sentences can be difficult to follow, while very short sentences can make writing feel choppy or disconnected.
Our sentence splitter / combiner processes text entirely in your browser, ensuring your content remains private. It intelligently identifies natural break points in long sentences (commas, semicolons, conjunctions) and combines short sentences using appropriate punctuation.
Why Use a Sentence Splitter / Combiner?
Improve Readability
Readability scores like Flesch-Kincaid are heavily influenced by average sentence length. By optimizing sentence length, you can improve your readability scores and make your content more accessible to a wider audience.
Enhance Accessibility
Shorter sentences are easier to understand for people with reading difficulties, cognitive disabilities, or those reading in a second language. Optimizing sentence length helps make your content more inclusive and accessible.
Better Comprehension
Long, complex sentences can be difficult to parse and understand. Breaking them down into shorter sentences helps readers follow your ideas more easily and reduces cognitive load.
Improve Flow
While short sentences can be effective for emphasis, too many very short sentences can make writing feel choppy. Combining related short sentences can create better flow and rhythm in your writing.
Meet Style Guidelines
Many style guides and content standards recommend specific sentence length ranges. This tool helps you meet those guidelines while maintaining the meaning and tone of your writing.
How It Works
Our sentence splitter / combiner uses intelligent algorithms to optimize sentence length:
Split Mode
When splitting long sentences, the tool:
- Identifies Long Sentences: Finds sentences that exceed your specified maximum length
- Finds Natural Break Points: Looks for punctuation marks (commas, semicolons, colons, dashes) and conjunctions (and, or, but) where sentences can be naturally split
- Preserves Meaning: Only splits at points that maintain grammatical correctness and preserve the original meaning
- Adds Proper Punctuation: Ensures each new sentence ends with appropriate punctuation
Combine Mode
When combining short sentences, the tool:
- Identifies Short Sentences: Finds sentences that are shorter than your specified minimum length
- Groups Related Sentences: Combines consecutive short sentences into longer, more flowing sentences
- Uses Appropriate Punctuation: Joins sentences with commas and maintains proper ending punctuation
- Maintains Readability: Only combines sentences when the result remains clear and readable
All processing happens instantly in your browser as you type. Your text is never sent to our servers, ensuring your privacy and security.
Example (Split Mode):
Input: "The quick brown fox jumps over the lazy dog, and then it runs through the forest, eventually finding a peaceful meadow where it can rest."
Output: "The quick brown fox jumps over the lazy dog. And then it runs through the forest, eventually finding a peaceful meadow where it can rest."
Example (Combine Mode):
Input: "The sun was shining. The birds were singing. It was a beautiful day."
Output: "The sun was shining, the birds were singing, it was a beautiful day."
Common Use Cases
- Content Writers: Optimize blog posts and articles for better readability scores and accessibility
- Academic Writers: Break down complex academic sentences into more digestible chunks without losing meaning
- Technical Writers: Simplify technical documentation by splitting long, complex sentences
- Accessibility Specialists: Ensure content meets WCAG guidelines for readability and comprehension
- Editors: Quickly identify and fix sentence length issues in manuscripts and documents
- Students: Improve essay readability and meet assignment requirements for sentence structure
- Business Writers: Create clearer, more accessible business communications
- Fiction Writers: Balance sentence length for better pacing and flow in narrative writing
- Content Managers: Ensure all published content meets readability standards and is accessible to diverse audiences
Frequently Asked Questions
For general readability, sentences between 15-20 words (approximately 75-100 characters) are ideal. However, the best length depends on your audience and purpose. Academic or technical writing may tolerate longer sentences, while content for general audiences or accessibility should favor shorter sentences. The tool allows you to adjust the target length based on your needs.
The tool looks for natural break points in long sentences, including commas, semicolons, colons, dashes, and common conjunctions (and, or, but). It prioritizes points that maintain grammatical correctness and preserve the original meaning. The tool will only split if all resulting sentences are within the maximum length limit.
The tool strives to preserve meaning by only splitting at natural break points and combining related sentences. However, you should always review the output to ensure the meaning and tone are preserved. Some sentences may need manual adjustment to maintain the exact nuance you intended.
The tool is optimized for English text and uses English-specific punctuation and conjunctions. It may work reasonably well with other languages that use similar punctuation (periods, commas, semicolons), but results may vary. For best results, use this tool with English text.
If a long sentence can't be naturally split at any punctuation marks or conjunctions, it will remain unchanged. Similarly, if combining short sentences would create a sentence that's too long or unclear, they may remain separate. The tool prioritizes grammatical correctness and readability over forcing changes.
No. All processing happens entirely in your browser. Your text is never sent to our servers, stored in a database, or saved anywhere. When you refresh or close the page, your text is cleared. Your privacy is protected.
Not necessarily. Variety in sentence length is important for good writing. Very long sentences can be effective for building tension or creating complex ideas, while very short sentences can be powerful for emphasis. Use this tool to identify and fix problematic sentence lengths, but don't feel you need to make every sentence the same length. The goal is readability and flow, not uniformity.
Yes, the tool can process long documents. However, very long documents (tens of thousands of sentences) may take a moment to process. The tool processes text instantly for most practical document sizes. If you're processing extremely long documents, consider breaking them into smaller sections.