How much can PDF size be reduced?

It depends on content. Image/scan-heavy PDFs usually shrink 60–85%. Text-heavy PDFs shrink less (10–30%).

Does text stay readable?

Yes. The Medium level preserves text and image readability with the best compression ratio for email.

Are files uploaded to a server?

No. Compression runs in your browser — confidential files stay private.

Does it work on mobile?

Yes. Just open it in Chrome/Safari on mobile, upload the PDF, and download the result to your gallery.

Kliimora PDF

Compress PDF

Shrink large PDFs while keeping pages readable.

Visitors without an account: 2 PDF pages per day, per tool. Sign up free for 5 pages per day. (0/2 pages today)

Drop files here, or click to choose

Compression level

Compress PDF Online — Shrink for Email & Uploads

PDF attachment too big for email or government forms? Compress your PDF in 3 seconds at one of three quality levels — Low, Medium, or High. Runs entirely in your browser, no server queue.

3 compression levels (Low / Medium / High) for any need
Great for email attachments (under 10 MB)
Works with scans, photos, and multi-page documents
No upload — your document privacy is preserved

How it works

1
Pick the PDF to compress
Drag & drop or click the upload area. Supports PDFs up to hundreds of pages.
2
Choose a compression level
Low for the smallest file, Medium for balance, High to keep image sharpness.
3
Download the new PDF
Your compressed file is ready to send via email, WhatsApp, or upload to a government portal.

Use cases

Job & scholarship applications

Meet recruiting portal attachment size limits without losing document quality.

Government document submissions

Compress scanned business permits, tax IDs, and ID cards to pass file-size validation.

Share presentations & reports

Send large visual reports via email or WhatsApp without friction.