PDF Compressor
Compress PDF files online with JIOPDF. Choose Low, Balanced, High or Maximum image compression, compare file sizes and preview the result. Image compression may remove selectable text.
Image compression rebuilds each page as an image. Text will no longer be selectable/searchable. Choose Safe optimize to preserve text and vector content.
Compression Result
Output Preview
Please inspect the pages and text readability before replacing your original PDF. This image-based method may remove selectable/searchable text and accessibility data.
Files are processed in your browser where supported. CDN libraries require an internet connection. Keep originals and verify important results.
About this PDF compressor
JIOPDF offers image-based PDF compression at adjustable DPI and JPEG quality, plus a safe structural optimization mode. Image-based compression can reduce scanned and image-heavy PDFs, but text may no longer be selectable.
How to use the tool
- Select the PDF file you want to re-save.
- Start the available processing action.
- Download the resulting PDF.
- Compare the file size and inspect important pages before replacing your original.
Frequently asked questions
Will this tool always reduce PDF size?
No. The tool does not guarantee compression or a smaller file. Check the resulting file size after processing.
Does safe optimization affect image quality or selectable text?
No page rasterization is performed. Selectable text, vector graphics and page layout are retained. Embedded images are not recompressed by this safe browser-only method.