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    Compress PDF to 400 KB

    Need your PDF under 400 KB? Balances quality and size for general-purpose document sharing and form submissions.

    Recommended compression: Medium compression (balanced quality and size). Suitable for most documents.

    Drop a PDF file here or click to upload

    Reduce file size by re-encoding images

    Why compress to 400 KB?

    Balances quality and size for general-purpose document sharing and form submissions.

    Other Compression Targets

    150 KB200 KB250 KB300 KB500 KB600 KB700 KB800 KB

    Frequently Asked Questions

    Can I compress a PDF to exactly 400 KB?
    Our tool re-encodes images at reduced quality to shrink the file. The result depends on your PDF's content — image-heavy PDFs compress significantly, while text-only PDFs may not reach 400 KB because text data is already minimal.
    Does compression reduce text quality?
    Text remains sharp because the tool re-renders pages at a readable resolution. Only embedded images are re-compressed, which may lose some fine detail.
    What if my PDF is already smaller than the target?
    If your PDF is already under 400 KB, compression may not reduce it further. The tool shows before and after sizes so you can compare.
    Is this free?
    Yes. Completely free, no signup, no watermarks. All processing happens in your browser.

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