Free PDF Compressor

PDF 온라인 복제

Shrink PDF files online with quality-preserving presets. Pick the preset that matches how the PDF will be used, and let Convertr handle the rest.

서명 없음 워터마크 없음 Files auto-deleted 최대 1GB

PDF

Quality Presets

Prepress · Printer · Ebook · Screen · Lossless

PDF를 업로드하거나 끌고 내려 놓으려면 클릭하세요. 최대 1GB, PDF 파일만 가능

Choose a quality preset

Presets pick how aggressively Convertr recompresses the PDF. You can switch presets and re-run the conversion at no cost.

Prepress (maximum quality) Highest quality for professional printing. Keeps embedded fonts and images at 300 DPI. Smallest size reduction; best fidelity. Printer (high quality) High quality for desktop printing. Images downsampled to 300 DPI. Modest size reduction with strong fidelity. Ebook (balanced) Balanced size and quality for screen reading. Images downsampled to 150 DPI. Good for email and web sharing. Screen (smallest) Smallest output for low-resolution screen viewing. Images downsampled to 72 DPI. Use only when size matters most. Lossless (qpdf restructure) Re-linearises and recompresses object streams with qpdf. No image downsampling or quality change. Best for already-optimised PDFs.

Convertr uses free open-source tools (Ghostscript and qpdf) to recompress PDFs.

Email-friendly PDFs

Shrink invoices, reports, and contracts so they fit inside common email attachment limits without splitting them across multiple messages.

Faster web downloads

Compress brochures, whitepapers, and product sheets before publishing them so visitors do not wait on slow downloads.

Long-term archives

Use Lossless or Ebook to reduce storage footprint when you are keeping a PDF copy of finished documents.

Online PDF compressor

어떻게 압축 PDF 온라인

Use this page when you need to shrink a PDF without installing Acrobat or a desktop compressor. Convertr keeps the workflow simple: upload the PDF, pick the preset that fits the use case, and download a smaller file.

1
Upload your PDF file from your computer, phone, or tablet.
2
Choose a quality preset that matches how you will use the PDF.
3
Start the compression and wait while Convertr produces a smaller PDF.
4
Download the compressed PDF and share, print, or archive it.

모든 선택이 하는 일

Convertr exposes the underlying Ghostscript and qpdf options as plain-language presets. Quality and final size are entirely your choice; no preset is forced.

Prepress (maximum quality)

Highest quality for professional printing. Keeps embedded fonts and images at 300 DPI. Smallest size reduction; best fidelity.

Printer (high quality)

High quality for desktop printing. Images downsampled to 300 DPI. Modest size reduction with strong fidelity.

Ebook (balanced)

Balanced size and quality for screen reading. Images downsampled to 150 DPI. Good for email and web sharing.

Screen (smallest)

Smallest output for low-resolution screen viewing. Images downsampled to 72 DPI. Use only when size matters most.

Lossless (qpdf restructure)

Re-linearises and recompresses object streams with qpdf. No image downsampling or quality change. Best for already-optimised PDFs.

온라인 PDF 자르기

Use the free PDF cropper to trim PDF margins, scanner borders, or unwanted page edges before compressing.

PDF에 페이지 번호 추가

Stamp page numbers onto a PDF before sharing or printing.

PDF 회전

Rotate all pages or selected pages in a PDF.

PDF에서 이미지 추출

내장된 PDF 이미지를 ZIP 아카이브로 저장하세요.

PDF 검색 가능

Add OCR text to scanned PDFs before archiving or sharing.

PDF에서 테이블을 추출

Export selectable PDF tables as CSV or TSV files.

PDF 메타데이터 제거

Strip common document metadata before sharing a PDF.

PDF 를 삭제

자신의 PDF에서 알려진 열린 암호를 제거합니다.

깔끔한 PDF

Finalize PDF fields, annotations, signatures, and layers before sharing.

PDF 변환기

Convert PDF files to and from DOCX, JPG, PNG, and other document formats.

PDF 비교

Spot selectable text changes between two PDF versions.

Word 변환기 PDF 변환

Turn Word documents into PDF files that keep their layout when shared or printed.

HTML에서 PDF로 변환

Render pasted or uploaded HTML as a downloadable PDF.

PowerPoint에서 PDF로

PPT 및 PPTX 프레젠테이션을 공유 가능한 PDF로 변환합니다.

PDF to JPG Converter

Export PDF pages as JPG images for previews, thumbnails, or web uploads.

문서 변환기

Convert PDF, DOCX, EPUB, and other document formats from one hub.

자주 묻는 질문

Is this PDF compressor free?

Yes. Convertr lets you compress PDF files for free, with no account, no watermark, and no software installation.

Will my PDF lose quality after compression?

You choose the preset, so you choose the quality. Prepress and Printer keep images at 300 DPI, Ebook downsamples to 150 DPI for screen reading, Screen targets 72 DPI for the smallest file, and Lossless re-saves the PDF without touching image quality.

최대 PDF 파일 크기는 얼마인가요?

다른 Convertr 도구와 동일하게 최대 1GB 크기의 PDF 파일을 업로드할 수 있습니다.

업로드된 PDF는 비공개인가요?

Files are processed on Convertr servers and automatically deleted after compression. The tool is built for quick file conversion, not long-term document storage.

Which preset should I pick?

Pick Prepress or Printer for documents going to print, Ebook for email or web sharing, Screen when you need the absolute smallest size, and Lossless when the PDF is already optimised and you only want to recompress the structure.

Convertr는 비밀번호로 보호된 PDF를 지원하나요?

Unlock the PDF first if you know the open password and are authorized to modify it. The compressor skips encrypted files it cannot read.

완전한 압축