Compress PDF Files Online

For stronger compression, each page is rendered and rebuilt with compressed page imagery. The selectable-text option instead structurally repacks the existing PDF and keeps its text, links and vector content intact, although the size reduction may be smaller.

Balanced is suitable for most documents. Light prioritizes sharper page detail, Strong prioritizes a smaller file, and Custom lets you control page resolution and JPEG quality directly.

Yes. Enable Preserve selectable text and links. The tool then avoids flattening the pages and performs a structural optimization. A PDF that is already optimized may not become much smaller.

Raster compression trades some page-image detail for a smaller file. Light keeps more detail, while Strong applies greater reduction. Preview the compressed result before downloading when visual fidelity is important.

A mostly-text PDF or an already optimized PDF may have little redundant data. The tool compares generated candidates with the original and keeps the smallest valid version, so it will not intentionally return a larger file.

Yes. Add multiple PDFs, process them in one batch, download each successful result separately, or download all successful results in a ZIP archive.

Yes. Choose Cancel Compression. The tool stops after the current safe processing step, keeps the original files loaded and prevents an incomplete result from being presented as successful.

No page-specific file upload endpoint is used. The selected files are read and processed in browser memory. The browser still needs internet access to load the pinned processing libraries unless they are already cached.

Yes. Scanned PDFs are often image-heavy and usually benefit from Balanced or Strong compression. Very low-quality scans may become harder to read, so preview the result before downloading.

No. Encrypted or password-protected PDFs must be unlocked with authorization before this browser workflow can process them.

The page does not impose an arbitrary local-processing limit. Practical capacity depends on the browser, device memory, page dimensions and document complexity. Large jobs display a device-capacity warning and can be cancelled.

The failed file receives a clear error state while the remaining valid PDFs continue processing. Successful outputs remain available for individual or ZIP download.

Yes. Each file has a Preview PDF control. Before compression it opens the source file; after compression it opens the selected smallest result.

No. The compressor preserves the document page order. Raster compression rebuilds the visible page appearance at the same page dimensions and orientation.

Light, Balanced, Strong and Custom raster modes rebuild each page as a compressed image. Choose Preserve selectable text and links when searchable text, links, forms or vector content must remain interactive.

Current stable Chrome, Edge, Firefox and Safari are expected to support the required browser features. Content blockers, strict network policies or older browser versions may prevent the processing libraries from loading.