PDF Tools
Compress scanned or image-heavy PDFs in your browser, compare before and after size, and download a rebuilt file.
This PDF Compressor is built for a specific type of file: scanned or image-heavy PDFs. It does not promise perfect compression for every PDF. Instead, it explains what happens, shows the before and after size, and lets you decide whether the rebuilt file is useful.
The browser renders each PDF page as an image, compresses that page according to the selected level and rebuilds a new PDF from those compressed pages. This can reduce large scan files, mobile-scanned notes, photo-heavy forms and image-based document packets.
Low compression keeps more visual detail and is better when small text or stamps need to remain readable. Medium compression is a balanced choice for everyday scanned documents. High compression aims for smaller file size but can soften images and text.
The best level depends on the document. A scanned receipt may compress well at high level, while a detailed certificate or form may need low or medium. Always open the downloaded result and confirm the pages are readable before sending it anywhere important.
The selected PDF stays in your browser during compression. No upload endpoint receives the file, and the tool does not store the document. That makes it suitable for private applications, forms, scanned IDs, invoices and other sensitive document workflows where server upload is not preferred.
Local processing also means the speed depends on your computer or phone. Large PDFs can take time because each page is rendered and rebuilt. Keep the original PDF saved on your device before testing different compression levels.
Text-only PDFs are often already efficient because text and vector shapes take little space. Turning those pages into images can make the output larger, not smaller. This is why the tool is careful about wording and does not claim that every PDF will reduce.
If the after size is larger, keep the original PDF. For image-heavy PDFs, try a stronger compression level. For text-only files, a desktop PDF optimizer may be more suitable because it can preserve text objects instead of rebuilding pages as images.
It renders PDF pages in the browser, compresses them as page images and rebuilds a new PDF locally.
Text-only or already optimized PDFs may not reduce. Image-based rebuilding can sometimes create a larger file.
Selectable text may not remain selectable because the compressed PDF is rebuilt from page images.
No. The PDF is processed in your browser and is not uploaded or stored by the site.
Start with Medium. Use Low for readability and High only when smaller file size matters more than fine detail.
Yes. Scanned and image-heavy PDFs are the best fit for this browser-based compressor.
