Compress PDFs,
without the upload.
Shrink bulky, scanned, and image-heavy PDFs right in your browser. Pick a level, see the savings.
How it works
- 1
Drop your PDFs
Add one or more PDF files. They're read locally with pdf.js — no upload.
- 2
Pick a level
Choose Strong, Balanced, or Light. Lower levels shrink more by reducing image resolution and quality.
- 3
Compress & download
Each page is re-rendered as an optimized image and rebuilt with pdf-lib, entirely in your browser. See the size saved per file.
Frequently asked questions
Are my PDFs uploaded to a server?+
No. The files are read and compressed entirely in your browser. Your PDFs never leave your device.
How does the compression work?+
Each page is re-rendered as an optimized JPEG at a lower resolution and quality, then rebuilt into a new PDF. This is the most reliable way to cut size in the browser and works especially well on scans and image-heavy documents.
Will the text still be selectable?+
No. Because pages are flattened to images, text becomes part of the image and is no longer selectable or searchable. If you need to keep selectable text, this tool isn't the right fit.
What if my PDF doesn't get smaller?+
Some PDFs (especially those that are already just text or already heavily optimized) may not shrink — or could grow. The card shows the before/after size so you can decide whether to keep the result.
Is it free?+
Yes — free, no signup, no watermarks.