Compress PDF file size

Shrink PDFs with Raster (max shrink) or Light (keep selectable text) mode.

Runs on your deviceFreeNo accountRaster or Light mode

How to use Compress PDF

Upload a PDF and pick Raster or Light. Raster asks for a JPEG quality and flattens pages into images for maximum shrinkage. Light keeps text selectable by avoiding a full re-raster — savings are smaller but text stays selectable and searchable. Download and compare the before/after size.

Add your file

Drag & drop, browse files, or press Ctrl+V to paste from the clipboard where supported.

Process in the browser

Work stays in this tab with WebAssembly, Canvas, or other on-device APIs — your file is not uploaded to Omnipus.

Download or share

Save the result to your device, or share it with the OS share sheet when available.

Direct share: Install Omnipus as an app on Android to share files and links into this tool from other apps.

About this tool

Shrink bulky PDFs in your browser with two honest modes. Raster (max shrink) re-renders every page as JPEG — smallest files, but text becomes an image. Light (keep text) strips metadata, rebuilds the page tree, and enables object streams so selectable text survives with more modest savings.

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Popular variations

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Frequently Asked Questions

Will text stay selectable?

Only in Light mode. Raster mode turns pages into images for maximum shrinkage.

Which mode should I pick?

Use Raster for scanned PDFs and email size caps. Use Light when you need to copy text or keep accessibility.

Is it lossless?

No. Raster is a visual recompress. Light is non-destructive to page content but may only trim metadata and structure.

Private?

Yes. Pages never leave the tab.

Password-protected?

Unlock the PDF first, then compress.

Is Compress PDF completely free to use?

Yes. Compress PDF on Omnipus is free to use with no subscription paywall for the tool itself.

Are my files or data uploaded to any servers?

No. Compress PDF processes your input locally in this browser tab. Your files and text are not sent to Omnipus. Some tools download an engine or model file the first time you use them; that is a download, not an upload.

Does Omnipus add watermarks to exported files?

No. Omnipus does not stamp a site watermark onto files you export from Compress PDF.

Can I use Compress PDF on my mobile phone?

Yes. Omnipus has touch-friendly controls and can be installed as an app. On Android you can also share files or links into tools from other apps.

Related tools

More pdf tools that pair well with this one.

Merge PDFJoin multiple PDFs into one document, in any order.Image compressorShrink image file size with a live quality preview.PDF to JPGExport every PDF page as a high-quality JPG image.PDF to WordExtract readable text from a PDF into an editable Word (.docx) file.Word to PDFConvert DOCX to PDF in your browser — layout may change on complex documents.JPG to PDFCombine one or many images into a single PDF.