PDF
如何压缩大型 PDF
在尽量保持清晰可读的前提下，减小体积、便于发送与上传。
Oversized PDFs are slow to email, upload to forms, and open on mobile. Compression reduces file size while keeping the document readable for most everyday uses.
Start with the source: if the PDF contains very high-resolution images, downsampling those images inside the PDF (or replacing them before export) often saves more space than generic compression alone.
Our compress PDF tool runs in the browser workflow you already use on Panyas Converter: upload, process, and download. For best results, avoid re-compressing the same file many times in a row, since each pass can add artefacts.
If you need archival quality, keep an uncompressed master copy locally and share only the compressed version online.