Compress PDF

Make a PDF smaller so it fits email attachments, upload forms and messaging apps. Choose the compression level; files are deleted automatically after processing.

Your file is deleted automatically after conversion.

How to convert PDF to PDF

The PDF is optimised with Ghostscript: embedded images are downsampled and recompressed, fonts are subset and duplicate resources are removed, while text stays sharp and selectable. Scanned documents and PDFs full of photos usually shrink the most, often by 50-90%. PDFs that are already optimised may shrink only a little.

Step 1: Choose your PDF file
Drag and drop a .pdf file onto the converter or click to browse. It works on desktop, tablet and phone.
Step 2: Pick a level
Recommended balances size and quality; Strong gives the smallest file; Light keeps print quality.
Step 3: Download the smaller PDF
The size reduction is shown before you download.

Good to know

If the compressed file would be larger than the original, the original is returned unchanged.
Strong compression reduces image resolution to about 72 DPI, fine for screens but not for printing photos.

Why use this PDF to PDF converter?

Three compression levels for any need.
Text and vector graphics stay sharp.
Great for email limits and online portals.
Files are deleted automatically right after processing.

Is it free?

Yes. Compress PDF is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device. This server-based conversion accepts files up to 50 MB.

Is my file uploaded?

This conversion needs a server engine, so the file is uploaded over an encrypted HTTPS connection, converted in an isolated temporary folder and deleted automatically as soon as the result is sent back. Nothing is kept, logged or shared.

More ways to work with a PDF

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About the formats

What is PDF?

PDF (Portable Document Format) reproduces a document exactly as it was laid out, regardless of the device, operating system or software used to view it. It is the standard choice for sharing, printing and archiving documents whose appearance must not change. Text-based PDFs can be converted to Markdown, plain text or HTML here.

Use PDF whenever the layout matters more than editing, reports, invoices, contracts, résumés and anything you need to share or print so it looks identical everywhere. Choose PDF when recipients should see exactly what you saw, with no fonts or margins shifting.

PDF (Portable Document Format)

Frequently Asked Questions

Is compress pdf free?

Yes. It is free, with no watermark, signup or email required. Local conversions have no artificial file-size or daily cap; the practical limit is your device. This server-based conversion accepts files up to 50 MB.

How much smaller will my PDF get?

It depends on the content. PDFs with photos or scans often shrink by more than half; text-only PDFs are already small and change less.

Is it safe to compress a pdf here?

Yes. The upload is encrypted, the file lives only in a temporary folder during conversion and it is deleted automatically afterwards. We do not read, keep or share your files.

Do I need to install anything?

No. Everything runs in a modern browser (Chrome, Edge, Firefox or Safari) on Windows, macOS, Linux, Android and iOS. There is no app, plugin or account.

PDFProcessed locally