PDF 압축 - 온라인으로 파일 크기 줄이기

강력한 온라인 PDF 압축기를 사용하여 PDF 문서의 크기를 줄이세요. 대규모 보고서를 이메일로 보내야 하거나, 크기 제한이 있는 포털에 파일을 업로드해야 하거나, 저장 공간을 절약해야 하는 경우, 당사의 도구는 가독성을 저하시키지 않고 PDF를 최적화합니다. 우리는 고급 압축 알고리즘을 사용하여 이미지와 글꼴을 축소하여 문서 크기를 크게 줄이면서 고품질을 유지합니다. 브라우저에서 직접 파일을 빠르고 안전하게 처리하세요.

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여기에 파일을 드래그 앤 드롭하세요

PDF, Word, Excel, PowerPoint 및 이미지를 지원합니다. 최대 100MB까지 안전하게 처리됩니다.

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What is an Online PDF Compressor?

An online PDF compressor reduces the file size of a PDF document directly in your browser — no Adobe Acrobat, no software installation, and no account needed. Upload your PDF and download a smaller version in seconds.

At PDFFixNow, you can compress PDF online for free. Reduce PDF file size without losing visible quality. Works on Windows, Mac, iPhone, and Android.

Why PDFs are large: PDFs often contain high-resolution images embedded at full print quality — far more detail than needed for screen viewing or emailing. When a PDF is exported from Word, PowerPoint, or InDesign at high quality settings, images are stored at resolutions of 150–300 DPI or higher. Our compressor resamples those images to a resolution that looks identical on screen but takes a fraction of the storage space.

What compression actually does: Our compressor applies lossy image compression to embedded photos and graphics, removes duplicate resource data and redundant metadata, and restructures the file to eliminate wasted space. The result is a PDF that is significantly smaller but visually identical at normal viewing sizes.

How to Compress a PDF in 3 Simple Steps

Upload your PDF

Drag and drop your PDF into the upload box or click to browse your device. You can upload a single file or up to 10 PDFs for batch compression.

Let the compressor reduce the file size

Our tool automatically analyzes your PDF and applies the optimal compression settings. No options to configure — it works instantly after upload and targets the best balance of size reduction and visual quality.

Download your compressed PDF

Click Download to save your compressed PDF. The file size reduction is shown alongside the download — you can see exactly how many MB or KB were saved before downloading.

When Should You Compress a PDF?

Compressing a PDF is useful whenever file size is causing a practical problem. Here are the most common situations where reducing PDF size saves time or resolves issues.

Compress a large PDF report or presentation before emailing it — to stay under the 10–25 MB attachment limit.
Reduce the size of a scanned document before uploading it to a government portal, job application system, or university admission form.
Shrink a product catalog or brochure PDF before adding it to your website to improve page load speed.
Compress a PDF ebook or guide before distributing it to customers or subscribers.
Reduce the file size of a multi-page scanned PDF before storing it in cloud storage or a shared drive.
Make a large architectural drawing or design PDF small enough to share via messaging apps or team collaboration tools.
Compress a PDF invoice or financial statement before attaching it to an accounting system or CRM.
Reduce the size of a collection of compressed PDFs to free up storage space on your device or server.

Why Use PDFFixNow to Compress PDF?

파일 크기 줄이기

이미지를 최적화하고 불필요한 메타데이터를 제거하여 PDF 크기를 크게 줄여 파일을 더 쉽게 공유할 수 있습니다.

고품질

우리의 스마트 압축은 크기와 품질의 균형을 유지하여 축소 후에도 텍스트가 선명하게 유지되고 이미지가 선명해집니다.

이메일 준비됨

표준 크기 제한을 우회하여 이메일 첨부 파일을 통해 보낼 수 있을 만큼 큰 PDF를 작게 만드세요.

클라우드 지원

즉시 압축하려면 컴퓨터, Google Drive 또는 Dropbox에서 파일을 업로드하세요.

안전한 암호화

귀하의 파일은 TLS 암호화로 보호되며 처리 후 당사 서버에서 영구적으로 삭제됩니다.

일괄 압축

여러 PDF 파일을 동시에 업로드하고 압축하여 시간과 노력을 절약하세요.

Tips for Compressing PDF Files Effectively

After compression, the tool displays both the original and new file sizes. Check the reduction percentage before downloading — if the PDF was already heavily compressed, further reduction may be minimal.

You can upload up to 10 PDFs at once and compress all of them in a single session. This is much faster than uploading and processing each file one by one when you have a folder of documents to compress.

Scanned PDFs are almost always the largest because each page is stored as a high-resolution image. These are the files that benefit the most from compression — typical reductions of 70–90% are common for scanned documents.

You can compress a PDF on iPhone or Android directly from your mobile browser. Open PDFFixNow, upload your PDF, and download the smaller version — no app or desktop needed.

For maximum size reduction, try compressing your PDF after removing any unnecessary pages using our Delete Pages tool. Fewer pages plus compression results in the smallest possible file size.

Compressing a PDF that has already been compressed may produce minimal size reduction and could introduce visible quality degradation in images. It is always best to compress from the highest-quality source file you have.

자주 묻는 질문

파일을 압축기에 업로드하세요. 이 도구는 자동으로 파일 크기를 분석하고 줄입니다. 최적화된 PDF를 즉시 다운로드하세요.

우리는 볼 수 없는 데이터를 제거하는 "손실이 있는" 압축 기술을 사용합니다. 화면 보기 및 인쇄 시 시각적 품질은 여전히 우수합니다.

압축률은 파일 콘텐츠에 따라 다르지만 특히 이미지가 많은 문서의 경우 사용자는 50%~90%의 압축률 감소를 경험하는 경우가 많습니다.

예, PDF 압축기는 완전히 무료로 사용할 수 있습니다. 한 푼도 지불하지 않고 여러 파일을 압축할 수 있습니다.

Yes. Our PDF compressor is fully mobile-friendly. Open PDFFixNow in Safari (iPhone/iPad) or Chrome (Android), upload your PDF, and download the compressed file — all from your phone or tablet without installing any app.

Upload your PDF to our compress tool and download the compressed version. Most email clients allow attachments up to 10–25 MB. Our compressor typically reduces image-heavy PDFs well below this limit. If the compressed file is still too large, consider splitting the PDF into smaller sections using our Split PDF tool.

No. Compression does not change, delete, or alter any text, pages, or document content. It only reduces the file size by optimizing how existing image data is stored within the file. All text, formatting, links, and page structure remain exactly as they were in the original.

Password-protected PDFs must be unlocked before they can be compressed. Use our Unlock PDF tool to remove the password, then upload the unlocked file to the compress tool.

Some PDFs are already highly compressed — for example, a PDF that was previously run through a compressor or was exported from software with compression enabled. If the images in the PDF are already at low resolution or high compression, our tool cannot reduce the size further without introducing visible quality loss. Text-only PDFs also see minimal reduction since text data is already stored very efficiently.

Free users can compress PDFs up to 500 MB in size. This covers the vast majority of PDF documents encountered in typical workflows. If you need to compress very large files above this limit, consider splitting the PDF into smaller sections first using our Split PDF tool, then compressing each section individually.

PDF 압축 - 온라인으로 파일 크기 줄이기

What is an Online PDF Compressor?

How to Compress a PDF in 3 Simple Steps

When Should You Compress a PDF?

Why Use PDFFixNow to Compress PDF?

Tips for Compressing PDF Files Effectively

자주 묻는 질문

PDF를 어떻게 압축하나요?

품질이 나빠질까요?

얼마나 줄일 수 있나요?

무료인가요?

Can I compress a PDF on my phone?

How do I compress a PDF for email?

Does compressing a PDF change its content?

Can I compress a password-protected PDF?

Why did my PDF not get smaller after compression?

Is there a file size limit for compression?

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