品質を維持しながらPDFファイルサイズを削減。小さなファイルのための無料オンラインPDF圧縮ツール。
Clear file handling
Built for real workflows
Progress and feedback
Useful options, not clutter
Smart PDF compression
Choose a practical target size, upload several PDFs, and MaxScanner progressively tunes compression to get as close as the document allows.
Upload PDF Files
Drop one or many PDFs. Compress them together and download the completed results as a ZIP.
Practical guide
Turn PDF pages into image files when you need individual pages for sharing, editing, previews, social posts or web use. Convert one PDF or a batch of PDFs, choose the output format and resolution, select pages when needed, and download the results together in an organized ZIP.
These are different jobs. Page conversion renders each PDF page as an image, preserving the page appearance. Image extraction pulls embedded images from the PDF. Choose page conversion when you need a visual copy of each page; choose extraction when you need the original pictures contained inside the document.
JPG is a strong default for photographic pages and smaller files. PNG is useful when crisp text, diagrams or lossless output matter. WebP can be a good choice for modern websites and apps that support it. BMP and TIFF are useful for compatibility or specialized image workflows.
Higher resolution creates larger images. For screen sharing and previews, moderate resolution is usually enough; print workflows may need more detail. Avoid exporting at a very high resolution unless the next step actually benefits from it.
If you have several PDFs, processing them one by one creates unnecessary work. A useful batch workflow keeps each source document organized, converts the requested pages, and packages the outputs into one ZIP so the result is easy to download and share.
Built around real tasks
Convert only the pages you need for messaging, presentations, support tickets or quick review instead of sending the whole PDF.
Render PDF pages as JPG or WebP when a web workflow needs image previews, thumbnails or visual document cards.
Convert a PDF page to PNG when you need to annotate, retouch or place the page inside another design workflow.
Upload a batch, choose one set of settings and receive organized output folders inside a single ZIP.
Create image pages when a destination accepts JPG or PNG but does not accept PDF files.
Generate moderate-resolution images for thumbnails or visual indexes without unnecessarily creating huge files.
Guide
PDF is excellent for preserving a document as a document, but it is not always the format people need next. A designer may need a page in PNG, a website may need WebP, a support team may want a screenshot-like JPG, and a messaging app may work better with a single image than with a multi-page file.
The key is to choose the output for the job. JPG is usually the practical choice for photographs and smaller downloads. PNG is better when sharp text, diagrams and lossless detail matter. WebP is attractive for modern web delivery. Resolution is just as important: exporting every page at an unnecessarily high resolution can create a large ZIP without making the result more useful.
For a multi-page or multi-document job, organization matters as much as conversion. Keep each source PDF in its own output folder, use predictable page filenames, and provide one ZIP download. That small workflow improvement can save more time than another conversion setting ever will.
Yes. You can convert PDF pages to JPG without installing desktop software. The practical choice is to use a resolution and quality level that match what you will do with the images next.
Yes. PNG is often preferable for sharp text, diagrams, screenshots and other content where lossless image output is useful.
Yes. WebP can be useful for websites and modern applications because it can provide compact images with good visual quality.
Yes. Enter a page range such as 1-3 or 1,5,7 when you only need selected pages rather than the entire document.
Yes. Batch conversion is useful when several documents need the same output settings. The results can be packaged into an organized ZIP.
Those are different operations. Page conversion creates an image of each rendered page; extraction retrieves embedded images from the PDF. Use extraction when you need the pictures themselves.
No. A converted image is a raster representation of the page, so its text is no longer selectable. Keep the original PDF when searchable text is important.
Use a moderate resolution for screen use and previews, and a higher resolution when the image needs more detail for print or close inspection. Higher resolution also increases output size.
Choose a suitable resolution, use JPG or WebP when appropriate, and compress or resize the exported images if the destination has a strict size limit.
For sensitive documents, check the service retention policy and security model before uploading. Avoid uploading confidential material to a service you do not trust.
Smart workflow
Build from the job you started: batch compatible files, keep the right output format, then move straight into the next useful step without hunting through the site.
Input
Output
Batch
10 files per run
10 files per run. Use one run when the files share the same task.
Choose a related operation below instead of starting from scratch.
Results stay focused on download, preview and the next useful action.
No fixed file-size limit per configured tool limit.
Natural next steps
Continue with a related tool using the same file workflow.
Smart workflows
Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.
Use the existing compression controls first, then verify the resulting file before downloading it.
Best for portals with strict file-size limits.
ContinueReduce transfer size and prepare the result for progressive web viewing.
Best for websites and downloadable reports.
ContinueStart with compression and keep the result focused on the destination file-size requirement.
Best for strict upload limits and application documents.
ContinueReduce the file and prepare it for faster online access.
Best for websites, knowledge bases and downloadable reports.
ContinueCompress the PDF for application, government or business portal limits.
Best when the destination has a known file-size cap.
ContinueCompress and linearize the PDF for faster online delivery.
Best for PDFs published on websites or shared repeatedly.
ContinueReduce the file first, then apply watermark and encryption to the final copy.
Best for sensitive documents that still need easy sharing.
ContinueReduce PDF size with a workflow designed around the destination: email, upload limits, web publishing, or storage.
Quality-aware compression
Batch processing direction
Useful target-size workflows
Clear before/after file size feedback
A PDF is “small enough” only relative to where it is going. Email may have one limit, a government portal another, and a website a completely different performance target. The useful compressor should help people reach that destination instead of forcing them to guess which quality preset to choose.
Practical guide
Reduce a PDF when an email, application, government portal or upload form has a file-size limit. Start with a sensible compression level, compare the resulting file with the original, and only use stronger compression when the smaller size is worth the quality trade-off.
Scanned pages, high-resolution photographs and embedded graphics are common sources of PDF size. A text-only PDF may already be compact, so aggressive compression may provide little benefit.
Upload the PDF, choose compression, download the result and check both the file size and the pages you care about. If the document is still too large, remove unnecessary pages or images before applying stronger compression.
Use a target-size PDF page when a service specifies a limit such as 100KB, 1MB or 5MB. Target-size compression can require quality trade-offs, so always inspect the final document before submitting it.
Built around real tasks
Shrink scans and supporting documents to fit a stated upload limit without making the text unnecessarily difficult to read.
Reduce oversized PDFs before sending them when the recipient or mail system has a practical attachment limit.
Reduce image-heavy scans while keeping the pages readable enough for everyday reference.
Guide
A good compressed PDF is not simply the smallest PDF possible. If the file is a scanned form, resume or application, readability usually matters more than squeezing out the final few kilobytes. Start with moderate compression, inspect a text-heavy page and a photo-heavy page, then increase compression only if the destination requires it.
For strict limits, work backwards from the requirement. If a portal accepts 1 MB, a result comfortably below 1 MB is safer than aiming for exactly 1,000 KB. When compression alone cannot get you there, removing unnecessary pages or oversized images is often more effective than repeatedly applying aggressive compression.
No. Results depend on what is inside the PDF. Scanned pages and already-compressed images may have less room for reduction.
It can. Stronger reduction may lower image quality, so compare important pages before sharing or submitting the file.
Yes. Scanned documents are often good candidates for compression because their page images can account for much of the file size.
Try removing unnecessary pages or images, then compress again. For a strict upload limit, use the matching target-size workflow.
Not necessarily. The best result is small enough for the destination while keeping the text and images usable.
PDF圧縮は、許容可能な品質を維持しながらPDFドキュメントのファイルサイズを削減します。メール添付、ウェブアップロード、ストレージスペースの節約に不可欠です。
ツールは、ファイルサイズの削減と品質保持のバランスを取るための複数の圧縮レベルを提供します。最大サイズ削減のための積極的な圧縮、または高品質を維持するための軽い圧縮を選択できます。
すべての圧縮はブラウザ内で行われ、ドキュメントがデバイスから離れることはありません。
PDFファイルをドラッグ＆ドロップするか、クリックして圧縮したいドキュメントを選択します。
希望の圧縮レベルを選択：低（最高品質）、中（バランス）、高（最小サイズ）。
圧縮をクリックしてファイルサイズを削減し、最適化されたPDFをダウンロードします。
メール添付制限を満たし、より速い配信を確保するためにPDFサイズを削減します。
ページ読み込み時間とユーザーエクスペリエンスを向上させるためにウェブダウンロード用にPDFを最適化します。
アクセシビリティを維持しながらディスクスペースを節約するためにアーカイブドキュメントを圧縮します。
圧縮結果はPDFの内容によって異なります。画像が多いPDFは50-80%削減できることが多く、テキストのみのPDFは削減が小さくなる場合があります。
テキストはすべての圧縮レベルでシャープで読みやすいままです。画像とグラフィックスのみが圧縮の影響を受けます。
はい、最大10個のPDFファイルを同時にアップロードして圧縮できます。
Smart workflows
Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.
Use the existing compression controls first, then verify the resulting file before downloading it.
Best for portals with strict file-size limits.
ContinueReduce transfer size and prepare the result for progressive web viewing.
Best for websites and downloadable reports.
ContinueStart with compression and keep the result focused on the destination file-size requirement.
Best for strict upload limits and application documents.
ContinueReduce the file and prepare it for faster online access.
Best for websites, knowledge bases and downloadable reports.
ContinueCompress the PDF for application, government or business portal limits.
Best when the destination has a known file-size cap.
ContinueCompress and linearize the PDF for faster online delivery.
Best for PDFs published on websites or shared repeatedly.
ContinueReduce the file first, then apply watermark and encryption to the final copy.
Best for sensitive documents that still need easy sharing.
Continue