DevTools Logo

Text Summarizer

Text Summarizer

Extractive summarization — highest-scoring sentences, original order

Text

Paste the document to summarize

About this tool

Extractive summarization picks the highest-scoring existing sentences — no paraphrasing, no cloud model. Sentences are ranked by term frequency with a lead bias, then the top N are stitched in original order.

How to use

  1. Paste document

    Enter articles, notes, or changelogs.

  2. Choose length

    Set how many sentences to keep.

  3. Copy result

    Use the summary in tickets, digests, or previews.

Frequently asked questions

Related guides

Client-Side Text Analysis: Sentiment, Summaries, and Keywords

Analyze sentiment with AFINN, extract sentences for summaries, and rank keywords with TF-IDF — all in your browser, no LLM required.

Related tools

Binary Text Translator

Convert text to binary or hex bytes and decode it back

Case Converter & Text Formatter

Convert text between 14 different case formats including camelCase, snake_case, kebab-case with batch processing and advanced options

Character Frequency Analyzer

Count character, letter and word frequencies for text analysis

Find and Replace Text

Find and replace text with optional regex, case, and multiline matching

HTML to Markdown Converter

Paste HTML and get clean Markdown. Configurable heading style, bullet marker, and code block style — all processed locally in your browser.

Keyword Extractor

TF-IDF keyword extraction from any document — ranked terms with scores