Compress PDF to 500 KB

You need a PDF under 500 KB - a common limit for email attachments, job applications, and document portals.

Balanced mode is the right choice here: it reduces images moderately and optimises the PDF structure, giving a significantly smaller file while keeping everything clearly readable.

Balanced mode: good size reduction with quality preservation
Preserves text sharpness and readable images
Switch to Compact if Balanced still leaves the file too large

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最大700 MBのファイル

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圧縮レベル

目標サイズ（任意）

MB

MBの最大出力サイズ。空白にすると選択した圧縮レベルが使用されます。

よくある質問

Which compression mode should I use for a 500 KB target?

Balanced is a good first try - it handles most documents well. If your PDF contains many high-resolution photos, Compact will get you further. If it is mostly text, Optimize may be enough.