Compress PDF Online
Choose a compression preset, enter a target size, or request a percentage reduction. Size-focused compression rasterizes pages, which can remove selectable text and interactive features; keep your original PDF.
Drop PDF files here
or
Choose PDFsPrivate: your files are processed in your browser and are never uploaded to our server.
How to use
- Choose a PDF from your device. Large files may require substantial memory and processing time.
- Choose a quality preset, target size, percentage reduction, or structure-only optimization.
- Compare actual output size and quality before downloading; target sizes are not guaranteed.
Choose how to compress your PDF
Size-focused modes render PDF pages as compressed JPEG images and rebuild the PDF. This can reduce image-heavy files but can remove selectable/searchable text, links, forms, signatures, accessibility information, layers and other interactive features.
Structure-only mode keeps the existing page content where supported, but does not recompress embedded photos or scans. Target size and percentage reductions are best-effort, not guaranteed. All processing is local in your browser; files are not uploaded.
Frequently asked questions
Will every PDF become smaller?
No. The target and percentage modes try several compression settings, but some PDFs cannot reach the requested size without severe quality loss. The actual result is shown.
Does it reduce image quality?
Size-focused modes lower page resolution and JPEG quality, so text and graphics may become less sharp. Structure-only mode does not downsample images.
Are my files uploaded?
No. PDF processing happens in your browser; files are not sent to our server.
Is there a watermark or signup?
No signup and no watermark. There is no fixed 50 MB app-level limit in Compress PDF, but very large files may fail because of browser/device memory and performance limits.