PDF → smaller PDF
Compress PDF
Make a heavy PDF small enough to send. Each page is re-drawn at the resolution you pick and rebuilt into a new file — on your device.
Compression redraws the pages as images, so the text becomes a picture: it looks the same but can no longer be selected or searched. Lower the resolution for a smaller file.
At a glance
- Price
- Free
- Account
- None needed
- Upload
- None — the document is rendered and rewritten in your browser tab, nothing is sent to a server
- Input
- PDF (up to 300 pages)
- Output
- Smaller PDF, pages as JPEG images
- File size
- 200 MB per file
- Works on
- Any modern browser — Android, iPhone, Windows, macOS, Linux
How to compress a PDF
Add the PDF
Drop the document on the box above. Scanned documents and image-heavy exports shrink the most; a PDF that is already lean barely moves.
Pick the resolution
110 dpi is the default and fine for reading on screen; 150 dpi keeps print-decent quality, 72 dpi is the smallest honest option for slides and forms.
Download and compare
The result row reports the before → after sizes and the percentage saved. If the file would not shrink, the tool says so instead of writing a bigger one.
What this compression trades away
Every page is rendered exactly as a viewer would draw it, encoded as a JPEG, and placed back into a new PDF at the page's own size. That reliably shrinks scans and photo exports — often by 70–90 % — because the original images are being resampled at screen resolution instead of camera resolution.
The honest cost: text stops being text. A compressed document cannot be selected, searched or copy-pasted from, and small print softens at low resolutions. Keep the original if it is a contract, a form or anything that gets edited later; use the compressed copy where size is what matters — email, uploads, portals.
Compress PDF questions
Is my file uploaded anywhere?
No. Each page is rendered and re-encoded in this browser tab; no server sees the document, and nothing is stored anywhere but your own disk.
Why does my compressed PDF lose selectable text?
Because the pages are turned into pictures. This is the trade that makes the file smaller without needing the original assets: a JPEG of a page is far lighter than the page's fonts, vectors and full-resolution images. If you need the text to stay text, this tool is the wrong one — keep the original.
How much smaller will it get?
Scanned pages and photo-heavy exports typically drop by 70–90 %. A text-only PDF that was already generated cleanly has little to give and may come out about the same size — the tool then says the file is already compact.
Which resolution should I use?
110 dpi for screen reading and email attachments, 150 dpi when it may be printed, 72 dpi for slides and forms where every kilobyte counts. The lower the resolution, the smaller the file and the softer the page.
Is the compressed file still a valid PDF?
Yes — it is built as a fresh PDF 1.4 document with a proper index, one image per page, and it opens in every reader, prints like the original did, and keeps the pages' sizes and orientation.