Document Utility
PDF Compressor
Reduce PDF file size by adjusting image quality and rendering resolution. Compress PDFs directly in your browser before sharing documents, attaching files to email, or uploading them to a website.
PDF Compression Settings
Upload a PDF file, then choose compression level and image quality. This works best for scanned documents, image-heavy PDFs, and captured materials.
PDF Upload
Drag a PDF file into this area or upload it using the select file button.
A stronger setting may reduce file size more, but text or images may become blurry.
JPG has broad compatibility, while WebP may produce smaller files depending on the browser environment.
To keep document contents readable, try Recommended or High quality first.
Higher resolution makes the result clearer but may increase the compressed file size.
The .pdf extension is added automatically when saving.
Leave this empty to compress all pages. Enter a range when compressing only selected pages.
For important contracts, certificates, or submission documents, test with a copy first and compare the original with the result.
Because of the compression method, original PDF features such as text selection, links, annotations, and bookmarks may not be preserved.
Recommended Compression Presets
Quickly apply compression settings based on your purpose, such as email attachment, scanned document, quality-first, or maximum compression.
Compression Status
Check PDF selection, compression progress, and size comparison results after completion.
Compressed Result Preview
Help
How does PDF compression work?
The uploaded PDF is rendered page by page, then rebuilt into a new PDF after adjusting image quality and resolution. PDFs with many images usually show better size reduction.
Which PDFs compress well?
Scanned documents, photo PDFs, screenshot-based files, image-heavy proposals, and image-heavy guide documents usually compress well. Text-only PDFs or already optimized PDFs may show little difference.
How should I choose the compression level?
For general documents, start with Balanced or Recommended quality. If you need to meet email attachment or upload limits, use Strong or High Compression. Higher compression may blur small text or images.
How do I enter a page range?
Leave it empty to compress all pages. To process only selected pages, enter a range such as 1-3,5,7. This means pages 1 through 3, page 5, and page 7.
Are uploaded PDFs stored on the server?
This utility can process PDFs in the browser. During normal use, selected PDF files are not stored on the server.
FAQ
Can text become blurry after compression?
Yes. If you increase compression or lower image quality and rendering resolution, small text or detailed images may become blurry. For submission documents, try Quality First or Recommended quality first.
Why does some PDF size barely decrease?
If the original PDF is already optimized or mostly text-based, there may be little image data to compress, so the size difference can be small.
Are links or selectable text preserved after compression?
Because this method rebuilds pages as images, original PDF features such as links, selectable text, annotations, and bookmarks may not be preserved. Always check the result if those features are important.
Can I use this on mobile?
Yes, but PDFs with many pages or large file sizes may use a lot of browser memory. Large PDFs are recommended for desktop use.
What should I do if I do not like the compressed result?
Try increasing image quality to High or setting rendering resolution to Clear. If you want a smaller file, try Save, High Compression, or Low resolution combinations.