Compress PDF

Your PDF, made lighter.

Drop your files, select compression level, and see how much space you saved.

Drag your PDF files here

or select files from your device

Up to 20 files · 25 MB per PDF · batch up to 100 MB

How much do you want to compress?LosslessCleans up structure without touching image quality.BalancedRecommendedCombines structural cleanup with lighter images and good clarity.MaximumDownscales images more aggressively. Verify small text before saving.CustomSet exact JPEG quality and image resolution, including aggressive downsizing.

Reduction depends on file content. Scans and large photos have the most room to shrink.

Compression happens on this device. Your PDFs are never sent to a server. Download results before closing this tab.

Your files

Your PDFs will appear here with before and after sizes.

Settings

Default compression

Preference applies to future batches and is saved in this browser.

How much do you want to compress?

Language

Available interface languages.

Files and privacy

Reading, compression, and visual inspection of your PDFs happen entirely inside your device browser memory. File contents and names are never sent to 1kApps or third parties. Engine resources are loaded once and work offline.

There is no server history. Files remain only in this tab memory until you remove them or close the tab. Download any results you wish to keep.

Up to 20 files · 25 MB per PDF · batch up to 100 MB

Up to 20 files per batch, 100 MB total, 25 MB per PDF. Password-protected PDFs or digitally signed files are not altered.

Balanced and Maximum downscale images that can be safely processed. Masks, transparency, and special color spaces are preserved. Text, vectors, forms, and links remain in the document.

About Compress PDF

Version 1.2.0 · English

Combine structural PDF cleanup with image compression to downsize your documents. Compare sizes, check image crispness, and download individually or in ZIP.

Processing is local and runs offline after caching app resources. Your PDFs are never sent to a server.

Product website

Compare quality

100%

Original

Result

Zoom in and scroll to inspect fine details. Preview does not replace checking in a dedicated viewer.