mypdf.space

Short answer

Drop your PDF into the compressor below. Start with Keep text for the smallest change in look; use Target size when a portal asks for 100 KB, 1 MB, or another exact limit. Processing never leaves your browser.

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

Compress PDF online

Free · private · files stay on your device

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How it works

  1. 1

    Open the PDF you want to shrink.

  2. 2

    Choose Keep text (recommended), Max shrink, or Target size.

  3. 3

    For target size, type a number and pick KB or MB; for max shrink, pick Low / Medium / High (or custom DPI).

  4. 4

    Click Compress, check the resulting size, and download.

Files never leave your device

Your PDF is processed in this browser tab. Files never leave your device, and mypdf.space does not receive uploads. No account, no watermark, no server-side copy.

Limits worth knowing

  • Target size stops at a readable floor (~50 DPI) instead of producing unreadable pages.
  • Re-rendered pages keep a searchable overlay when the original had text; accents may drop from that layer.
  • Password-protected files must be unlocked first.

Frequently asked questions

  • How do I compress a PDF without uploading it?
    Use this page — compression runs in your browser. Choose Keep text, Max shrink, or Target size, then download.
  • Can I compress a PDF to 100 KB or 1 MB?
    Yes. Use Target size here, or open a dedicated size page such as compress to 100 KB or compress to 1 MB for a pre-set limit.
  • Will compress keep my text selectable?
    Keep text preserves selectable text and vectors. Max shrink and Target size re-render pages when needed and restore a searchable overlay when text exists.

Written by Sumit · Last updated 23 Oct 2026