Is my PDF uploaded to a server?

No. The file is opened and compressed entirely in your browser. Nothing leaves your device, and the tool works offline after your first visit.

Why is text not selectable in the compressed PDF?

Pages are re-rendered as images to achieve the size reduction, so the text becomes part of the picture. Keep the original if you need selectable or searchable text.

What kind of PDFs compress best?

Scanned documents, photos exported to PDF, and slide decks with images. Text-only PDFs are usually small already and may not shrink further.

PDF Compressor

Compressed on your device · nothing uploaded · works offline

Quality 70

Detail

Grayscale

How it works: pages are re-rendered as images at your chosen quality, so text stops being selectable in the output. Big savings on scans and image-heavy PDFs; text-only PDFs are often already small.

Drop PDFs here, or click to choose

Up to 5 at once · files stay on your device

PDF compression without the upload

Nearly every free PDF compressor works the same way: you upload your document to someone's server, they squeeze it, and you download the result. For contracts, invoices, medical records, and ID scans, that round trip is exactly what you do not want. This tool keeps the whole job on your device. The PDF is opened, re-rendered, and rebuilt by your own browser, and it keeps working with your internet switched off.

The trade-off is worth understanding. To shrink the file, each page is redrawn as a compressed image at the detail level you pick. That is why the savings are dramatic on scanned documents and image-heavy exports, which are usually just big pictures anyway. The cost is that text in the output is no longer selectable or searchable, because it has become part of the page image. If you need selectable text, keep the original alongside the compressed copy.

For most everyday jobs, quality 70 at reading detail produces a file that looks sharp on screen at a fraction of the size. If the result ever comes out larger than the original, the tool tells you and keeps your original file instead of quietly making things worse.

Frequently asked questions

Is my PDF uploaded to a server?: No. The file is opened and compressed entirely in your browser. Nothing leaves your device, and the tool works offline after your first visit.
Why is text not selectable in the compressed PDF?: Pages are re-rendered as images to achieve the size reduction, so the text becomes part of the picture. Keep the original if you need selectable or searchable text.
What kind of PDFs compress best?: Scanned documents, photos exported to PDF, and slide decks with images. Text-only PDFs are usually small already and may not shrink further.