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Compress PDF Tool

A free tool to reduce the file size of your PDF. It re-compresses each page as an image to shrink the file. Use the quality slider to balance image quality and file size. All processing happens in your browser, so your files are never uploaded to any server.

Last updated: 2026/10/16 Documents Feedback & bug reports
Your files are never uploaded All processing happens locally in your browser. No upload, unlimited use, no sign-up, and no watermark.

Drag & drop a PDF

or

Ctrl+V Ctrl+V to paste a PDF from your clipboard

PDF file (one file, no size limit)

How to Use

1

Select a PDF

Drag & drop the PDF you want to compress, or click to select it.

2

Adjust quality

Use the quality slider to balance image quality and file size. When in doubt, leave it on "Standard".

3

Compress & download

Press "Compress PDF" to start. Check the before/after sizes, then download the result.

About the Compress PDF Tool

An online tool to reduce the size of your PDF files. It re-encodes each page as an image at the quality you choose and embeds it into a new PDF to shrink the file. It is handy when you hit email attachment limits or upload size caps. The biggest advantage is that your files are never sent to a server. Popular online PDF services (such as Smallpdf or iLovePDF) require you to upload your files and often limit free usage. This tool runs entirely in your browser, so you can compress even confidential documents safely, with unlimited use, no sign-up, and no watermark.

Features

  • Browser-Only ProcessingFiles are never uploaded; everything runs on your device. Safe even for confidential documents.
  • Adjustable QualityBalance image quality and file size exactly how you want with the quality slider and resolution setting.
  • Before/After ComparisonSee the original and compressed sizes plus the reduction ratio instantly, before you download.
  • No Sign-up, 100% FreeNo registration or installation. No watermark, no usage limits - just open your browser and go.

Use Cases

  • Shrink a PDF that exceeds an email attachment limit (e.g. 10MB)
  • Reduce the size of scanned documents or photo-heavy PDFs
  • Fit upload caps on web forms and application systems
  • Lighten many PDFs before archiving them to storage
  • Make proposals, catalogs, and portfolios easier to share

FAQ

Are my PDFs uploaded to a server?
No. All processing happens locally in your browser. Your PDF files are never sent to or stored on any server, so even confidential documents are safe.
Will any PDF get smaller?
This tool re-compresses each page as an image, so it is most effective on PDFs with many photos or scanned images. Text- or vector-based PDFs are already small, so they may not shrink much - or could even become larger. In that case, keep the original file.
Can I still search or select text after compressing?
No. Because this tool converts each page into an image, the compressed PDF no longer supports text selection, search, or copy. Keep this in mind if you need to retain text data.
Can I compress password-protected PDFs?
Encrypted (password-protected) PDFs may not load. Please remove the password before loading such files.
Does the compressed PDF have a watermark?
No. The output PDF contains no watermark or ads, and there are no usage limits - use it as many times as you like for free.

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