Web向け最適化
オンラインでの高速な段階的表示（fast web view）のためにPDFを線形化します。
ここにPDFをドロップするか、クリックして選択
PDFの上限： 100 MB
線形化により、ダウンロードが完了する前に最初のページを表示できます。文書の内容は変更されません。
オンラインでの高速な段階的表示（fast web view）のためにPDFを線形化します。
ここにPDFをドロップするか、クリックして選択
PDFの上限： 100 MB
線形化により、ダウンロードが完了する前に最初のページを表示できます。文書の内容は変更されません。
To optimize a PDF for web, also known as fast web view or linearization, is to reorganize the file's internal structure. Instead of requiring the whole file to download before anything appears, linearize PDF moves the first page's data to the front of the document. A reader can then view that page while the rest keeps loading in the background.
This difference matters whenever a document is opened directly in a browser. For a large catalogue, a report of dozens of pages or a brochure shared online, this fast web view clearly improves perceived speed: your readers see content almost immediately, without waiting for a long download to finish. The file's content stays exactly the same; only the way it is served changes.
This optimization makes the most sense when you publish PDFs online: a website, a document portal, a share link or an embed inside a page. To go further, combine it with compress for a smaller file to download, then run web optimization again on the result. If a document looks corrupted or refuses to open, repair can restore its structure before processing, and metadata lets you check or clean the title and author before you distribute it.
On privacy, nothing changes about our principles: no sign-up is required and your files are deleted automatically after processing. Your documents are used only to produce your web-optimized PDF, nothing more.
Upload
Upload your PDF file into the drop area (or drag and drop it).
Configure
オンラインでの高速な段階的表示（fast web view）のためにPDFを線形化します。
Download
Download the resulting document in one click — your files are deleted automatically after processing.
Upload your PDF: the tool linearises it to allow progressive display, page by page, while downloading. Ideal for documents viewed directly in a browser.
Linearisation (or "fast web view") reorganises the internal structure of the PDF so the first page appears before the file has fully finished downloading.
It reorganizes the PDF's internal structure so the first page appears while the rest downloads. The reader sees the beginning of the document without waiting for the full file.
Not necessarily: its purpose is progressive display, not compression. The size stays close to the original and may even grow slightly due to the added navigation information.
Yes, this tool is 100% free with no usage limits. No sign-up, no credit card and no watermark added to your documents.
Yes. Your files are processed securely and automatically deleted from our servers after processing. Nobody has access to them.