Analyse the length, structure and reading time of a PDF

Analyse the text of a PDF: word count, sentences, paragraphs, estimated reading time and the most frequent words. Useful for estimating reading time or checking a document before publishing. Free and local.

Choose your PDF

Drop here or click to choose

Files stay on your device — nothing is uploaded

Analyses the text layer of your PDF and reports length, structure and the most frequent words — useful for estimating reading time or checking a document before publishing. Everything runs locally; no AI service is contacted.

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Your file is processed in your browser and never uploaded.

How does it work?

1
Choose your PDF
Drag the PDF here. The analysis starts immediately.
2
Review the statistics
Words, sentences, reading time and the top 10 most frequent words.
3
Export
Optionally download a text report.

Frequently asked questions

Does this use AI to summarise?

No. The analysis is purely statistical and runs entirely locally in your browser — no text is sent to any AI service.

Does this work with scanned PDFs?

No, scanned PDFs have no text layer. Use the OCR tool first.

Are my files uploaded?

No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.

Is it free?

Yes, completely free, without watermark or account. The site is paid for by ads.

Why in the browser?

PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.