Reduce PDF file size with private browser processing, lossless cleanup, strong scan compression, batch ZIP export, and exact before-after size reports.
The AfroTools PDF Compressor reduces PDF file size directly in your browser. Clean mode performs a lossless rewrite that preserves selectable text where possible. Balanced, Strong, High quality, and Custom modes are built for scanned or image-heavy PDFs: they render pages at controlled DPI and JPEG quality, then rebuild a smaller PDF. The tool supports batch compression, ZIP download, optional grayscale conversion, target size attempts, page caps for very large documents, and before-after size reports. Results depend on the source file: scanned documents usually shrink much more than already-optimized or mostly text PDFs. Your documents are never uploaded to a server.
Compression results vary depending on the content. PDFs with high-resolution images can see 50-80% reduction. Text-heavy PDFs with few images may see smaller reductions since text is already compact.
Clean preserves document structure where possible. Balanced is a good default for sharing. Strong targets upload portals and email limits. High quality keeps more visual detail. Custom lets you set DPI, JPEG quality, grayscale, page cap, and optional target size.
Clean mode is the safest choice when selectable text matters. Balanced, Strong, High quality, and Custom modes rasterize each page, so text remains visually readable but may no longer be selectable. Use those modes mainly for scans and image-heavy files.
No. The entire compression process runs in your browser using JavaScript. Your PDF never leaves your device, making it completely safe for confidential, legal, or sensitive documents.
There is no strict server limit since processing is client-side. However, very large PDFs (over 100MB) may take longer to process depending on your device's memory and processing power.