Linearize a PDF for Fast Web View — qpdf-wasm rebuilds the cross-reference table and writes the first-page hint stream so viewers can render page 1 before the rest of the file downloads.
Upload the PDF to linearize
qpdf-wasm rebuilds the xref table and writes the /Linearized hint dictionary
Download the linearized PDF — already-linearized inputs are passed through unchanged
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
0 bytes uploaded. PDF Linearize (Fast Web View) runs entirely in your browser using pdf-lib and pdfjs-dist. Your file stays on your device at all times. No data is sent to any server.
Also known as Fast Web View. The PDF's internal structure is reordered so a viewer can render the first page before the entire file has downloaded.
qpdf compiled to WebAssembly. qpdf is the reference implementation for PDF linearization — it produces the same /Linearized hint stream that Acrobat does.
We detect the existing /Linearized dictionary and return your file unchanged so you don't pay for redundant work. Use the Force option to re-run anyway.
Yes — provide the password and qpdf will decrypt, linearize, and re-encrypt in a single pass.
Compress a PDF using object streams and structure optimization — no image quality is lost.
Open toolConvert a PDF between versions 1.4, 1.5, 1.6, and 1.7 for compatibility with older readers and archival systems.
Open toolReduce PDF file size by subsetting embedded fonts — only glyphs actually used in the document are kept.
Open tool