🗜️ PDFを圧縮
調整可能な品質レベルでPDFファイルサイズを削減
🔒 画像がデバイスの外に出ることはありません。 すべての処理はpdf-lib with image recompressionを使用してブラウザ内でローカルに行われます。アップロード、サーバー、追跡は一切ありません。
特長
- Three 圧縮ion Levels — Choose light, medium, or aggressive compression to balance file size and quality.
- Size Comparison — See original vs. compressed file size and the percentage saved.
- 100% Private — 圧縮ion runs entirely in your browser. No upload, no server.
- Fast Processing — Optimized compression algorithms deliver results in seconds.
仕組み
- Upload your PDF — Drop a PDF file you want to compress.
- Select compression level — Choose light (best quality), medium (balanced), or aggressive (smallest file).
- ダウンロード compressed PDF — Review the size savings and download the compressed file.
活用例
- Reduce PDF size for email attachments
- Optimize PDFs for faster web downloads
- 保存 storage space on cloud drives
- Shrink PDFs for mobile viewing
よくある質問
How much can the file size be reduced?
It depends on the content. PDFs with large images can be reduced by 50-80%. Text-heavy PDFs may see 10-30% reduction.
Does compression affect text quality?
No. Text remains sharp and searchable. 圧縮ion primarily targets embedded images.
Is there a file size limit?
No hard limit since processing is local. Very large PDFs (100MB+) may take longer depending on your device.