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Short answer

Drop a PDF, choose Keep text, Max shrink, or Target size (for example 100 KB), then download. Compression runs in your browser — for exact portal limits, use the compress-to-size pages.

Stays on your device·No upload·No account·No watermark·Offline after install·How it worksMethodologyPrivacy

Compress PDF Online

Shrink a PDF locally — keep selectable text, max-shrink, or hit a size you choose.

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About this tool

Compress PDF online for free when email or upload limits get in the way — no signup, no watermark, nothing uploaded.

Keep text (default) rebuilds the file while preserving selectable text and vectors. Max shrink rasterizes pages for smaller files and restores a searchable overlay when text exists.

Target size lets you name a number — 100 KB, 200 KB, 500 KB, or 1 MB — and the tool works down through quality settings until the file fits. If that number is not reachable without making the pages unreadable, it says so plainly.

Already-small text PDFs may not shrink much. Image-heavy scans usually shrink the most.

How to use Compress PDF Online

  1. 1Open the PDF you want to shrink.
  2. 2Choose Keep text (recommended), Max shrink, or Target size.
  3. 3For target size, type a number and pick KB or MB; for max shrink, pick Low / Medium / High (or custom DPI).
  4. 4Click Compress, check the resulting size, and download.

You need

  • One PDF

Common use cases

  • Shrink PDFs for Gmail, Outlook, or college portal uploads.
  • Fit a file under WhatsApp or messaging attachment limits.
  • Professionals sending large scanned contracts without a cloud link.

Frequently asked questions

  • Can I compress a PDF to 100 KB or 200 KB?
    Yes. Target size mode takes a number in KB or MB and tries each quality setting from 150 DPI down to 50 DPI, stopping at the first one that fits. If the target cannot be met without making the pages unreadable, you get the smallest legible file and a clear note saying so — the number is never faked.
  • Does compress keep selectable text?
    Yes by default. Keep text preserves selectable text and vectors. Max shrink rasterizes pages and restores a searchable overlay when text exists.
  • Will every PDF get much smaller?
    Not always. Already-small text PDFs may not shrink much (or can grow slightly). Image-heavy PDFs usually shrink more with max shrink.
  • Is compress PDF free with no watermark?
    Yes — free, no account, and no watermark. Processing stays in your browser.
  • Do you store my files?
    No. Compression never uploads your PDF. Close the tab and nothing remains on our servers — because nothing was sent.