Count the most common words in a PDF
Analyse which words appear most often in a PDF. Useful for linguistic research, SEO analysis of documents or quickly understanding the content. Free and local.
Choose your PDF
Drop here or click to choose
Files stay on your device — nothing is uploaded
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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.
- 2
Settings
Choose whether to filter stop words and how many words to show.
- 3
Export
Download the word frequency table as CSV.
Frequently asked questions
What are stop words?
Stop words are common words without meaning for the content, such as "the", "a", "and". These can be filtered out of the results.
Does this work on 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.
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