A random sentence from corpus tool lets you paste any block of text (a "corpus") and randomly extracts one or more sentences from it. This is useful for writing prompts, language learning exercises, content ideation, randomized quiz questions, or simply exploring your own text in unexpected ways. Unlike generic sentence generators that rely on AI or pre-built databases, this tool works directly with your text.

The tool intelligently splits your corpus using common sentence-ending punctuation marks: periods (.), exclamation marks (!), and question marks (?). It also handles ellipses (...) and multiple consecutive punctuation marks. Additionally, if your text uses line breaks to separate sentences, those are recognized too. The splitting algorithm filters out empty fragments and trims whitespace for clean results.

• Writing prompts: Randomly pick a sentence from a book or article to spark creativity.
• Language learning: Extract random sentences from target-language texts for translation practice.
• Teaching: Create randomized quiz questions or discussion starters from study materials.
• Content creation: Shuffle key points or quotes for social media posts.
• Brainstorming: Randomly juxtapose ideas from different parts of your notes.
• Games: Use as a random prompt generator for impromptu speaking or writing games.

For optimal sentence detection, ensure each sentence ends with clear punctuation (. ! ?). If you're pasting text where sentences are separated by line breaks without punctuation, the tool will still attempt to split correctly. Avoid using abbreviations with periods (like "Mr." or "Dr.") if possible, as these may be incorrectly treated as sentence boundaries. You can preview all detected sentences by clicking "Preview all sentences" below the input area to verify the split.

There is no hard limit. The tool processes everything in your browser using JavaScript, so it works with corpora ranging from a few sentences to thousands. For very large texts (e.g., entire books with 10,000+ sentences), the sentence preview list is capped at 100 entries to keep the interface responsive, but all sentences remain available for random generation. Performance is generally excellent even with substantial input.

When disabled (default), the tool ensures each randomly selected sentence is unique — no sentence appears twice in a single draw. If you request more sentences than exist in your corpus, you'll see a friendly warning. When enabled, sentences are drawn with replacement, meaning the same sentence can appear multiple times. This is useful when you want purely independent random picks, like rolling dice.

Great sources include public domain literature from Project Gutenberg, your own notes and journals, article excerpts, song lyrics, poetry collections, speech transcripts, email newsletters, or any text you've written. The tool comes with built-in preset corpora — famous quotes, classic literature, and interesting facts — so you can try it out instantly without pasting anything.

No. All processing happens entirely in your browser using client-side JavaScript. Your corpus text never leaves your device. The history feature stores recent draws only in memory during your current session and is cleared when you close or refresh the page. No data is sent to any server.