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Ókeypis PDF þjöppu

Þjappaðu PDF skjölum til að minnka stærð þeirra. Ekkert gæðatap, engin skráarstærðartakmörk.

Engin skráastærðarmörkSkrár eru persónulegarEngin innskráning krafistFrjáls að eilífu

Slepptu skrám hér eða smelltu til að fletta

PDF engin skráastærðarmörk

Skoðaðu skrár

Skrárnar þínar fara aldrei úr tækinu þínu. Öll vinnsla fer fram á staðnum í vafranum þínum.

💡 Scanned or image-heavy PDFs shrink the most with the image options. Text-only PDFs are usually already small — if nothing helps, we’ll tell you the file is already optimized rather than hand you a bigger one.

Optimize for your platform

Compress PDF for EmailCompress PDF for UploadCompress PDF for ArchivingCompress PDF for SharingCompress Legal PDF Documents

Hvernig það virkar

Most "free PDF compressor" sites silently upload your PDF to their servers. Here, compression happens entirely in your browser using pdf-lib — a popular JavaScript library that reads and rewrites PDF files locally.

  1. 1
    You drop a PDF
    The file is read into your browser's memory as a byte array. Nothing leaves your device.
  2. 2
    pdf-lib parses the PDF structure
    PDFs are essentially containers of fonts, images, and instructions. pdf-lib reads the structure and identifies which embedded images can be re-encoded at lower quality to reduce size.
  3. 3
    Images are re-encoded at your chosen quality
    You choose the quality level. Embedded JPEG images are re-encoded with that quality setting. The lower the quality, the smaller the output PDF — but text and vector content remain unchanged.
  4. 4
    A new PDF is written and offered for download
    pdf-lib reassembles the PDF with the compressed images and writes the result to a new in-memory file. Click Download to save it locally.

Safe for contracts, tax returns, medical records, anything sensitive. Your PDF and its contents never reach our server — there is no server in this workflow.

Af hverju að nota okkar?

✓Completely free — no hidden costs, ever
✓No account, email, or login required
✓Files stay on your device — processing happens in your browser
✓Works on any device — phone, tablet, desktop
✓No watermarks on any output
✓Browser memory limits may apply for very large files

Tengd verkfæri

Vinsælt
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PDF samruni

Sameina margar PDF skrár í eina. Dragðu til að endurraða síðum.

Prófaðu þaðSkrár eru staðbundnar
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Mynd til PDF

Umbreyta myndum í PDF. Endurraðaðu síðum, stilltu stærð og spássíur.

Prófaðu þaðSkrár eru staðbundnar
Vinsælt
🖊️

PDF Redactor

Black out sensitive text in a PDF for good. Pages are flattened to images so the hidden content is permanently destroyed — not just covered. Runs entirely in your browser.

Prófaðu þaðSkrár eru staðbundnar
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