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Compress PDF
Shrink the file size so it’s easy to send. Free, no sign-up, nothing to install. Files are processed on your own device — never uploaded to a server.
How to use Compress PDF
- 1
Open DinoRexPDF in the browser on your computer.
- 2
Choose or drag in your files. They are processed on your own device, not uploaded.
- 3
Finish your edits, then click Save to download the result.
Why DinoRexPDF?
Never touches the cloud
Files travel straight from phone to laptop over your own Wi-Fi.
No install, no account
Just a browser. No sign-up, no installation.
As fast as your Wi-Fi
No uploading or downloading. Big files move in seconds.
App-grade scanner
Edges detected automatically, perspective straightened, paper clean white.
More PDF tools
Merge PDFCombine several PDFs and photos into one document.Scan to PDFPhotograph documents with your phone, straight to PDF here.Repair PDFRebuild PDFs that are damaged or won’t open.Grayscale PDFTurn colours into gray — saves ink when printing.JPG to PDFTurn photos and scans into a tidy A4 PDF.Edit PDFAdd text, images, highlights and shapes.Sign PDFDraw your signature and place it on the document.