
Summarize Long PDFs
Turn long reports, papers and technical documents into clear key takeaways without reading every page.
Summarize a PDFFree text tool
Count Twitter/X characters instantly and check whether your post fits within the platform's character limit.
Private by default. Your text is analysed locally in your browser and is not uploaded.
X post length
0 / 280280 characters remaining
Sentences and times are estimates. Token counts vary by model and tokenizer; this is a quick estimate.
Quick answer
See your character count against a 280-character planning limit while you type. The remaining number helps you tighten a post without repeatedly copying it into a composer.
The publisher can apply different rules to links, media, account features and Unicode text. Treat this simple local character count as drafting guidance and confirm the final result in X.
No. It only counts text in your browser.
KnowledgePilot
Finding information is only the first step. KnowledgePilot helps you understand documents, ask questions, and verify every answer against the original source.

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Use an AI document summarizer to summarize PDFs, search documents, ask questions and find key information without reading every page.

Turn long reports, papers and technical documents into clear key takeaways without reading every page.
Summarize a PDF
Follow citations back to the relevant section and see the supporting text in context.
Explore document analysis40 free credits · No credit card required