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GARGLOO

Compress PDF Online

Smaller PDFs for email limits and faster sharing.

Runs on your devicePDF

At a glance

Input:
PDF
Output:
A smaller PDF document
Processing:
Runs locally in your browser
Limits:
Up to 150 MB per file, max 1 file
Privacy:
Your files stay on your device — nothing is uploaded to a server

Common use cases

  • Getting a document under an email attachment limit
  • Meeting upload-size caps on application, tender or portal forms
  • Making heavy scan-heavy files faster to open and share
  • Reducing storage used by archived documents (pair with the Image Compressor when scans are image-based)

About this tool

Compress PDFs without uploading them anywhere. Choose how aggressively to shrink, watch accurate per-page progress, and compare exact sizes before downloading.

How to use it

  1. Add your PDF.
  2. Pick a strength: Balanced keeps quality high; Strong and Extreme prioritize size.
  3. Start compression and follow real progress per page.
  4. Download when the savings look right to you.

Good to know

  • Scanned PDFs compress best; already-image-based PDFs may not shrink much further.
  • Very long documents (300+ pages) take a while because everything runs locally — grab a coffee.

Frequently asked questions

How does PDF compression work here?

Strong mode renders every page at your chosen resolution and rebuilds the PDF from optimized page images — the technique professional 'extreme compression' uses. Balanced mode first attempts a lossless re-save that only helps files with unused overhead.

Will text stay selectable?

In lossless re-save, yes. In image-based compression, pages become high-fidelity images: visually identical at reading zoom, but text is no longer selectable or searchable.

Is my document uploaded?

No. PDF compression happens entirely on your device — the file never leaves your browser.

How much smaller will my PDF actually get?

It depends on what's inside. Scan-heavy and image-rich documents often shrink dramatically; text-only PDFs may shrink only slightly with lossless mode. The tool always shows the exact before/after size before you download, so you can compare presets risk-free.

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