Choose one PDF
The browser reads the page count and file size locally.
Private PDF tool
Reduce PDF size without uploading
Choose a clear compression level, see exactly what it changes, and download a smaller PDF—without an account, watermark, or daily quota.
No uploadNo accountNo watermark
Drop one PDF here
Your file stays in this browser
Choose PDFNeed a workflow and verification checklist? Read the PDF compression quality-test guide.
Simple by design
How it works
Pick the right trade-off
Use Balanced for everyday sharing, Smallest for strict limits, or Preserve for interactive PDF features.
Compare and download
See the original and result sizes before saving the file.
Practical guide
Choose compression based on what must survive
For an email attachment, online application, or learning portal, Balanced is a practical first try. It turns each page into a clear 144 DPI image and recompresses image data.
Choose Smallest file when the upload limit matters more than print sharpness. Choose Preserve PDF features to avoid rasterizing searchable text, links, and forms. Check those features in the result.
Every mode, including Preserve PDF Features, rewrites the PDF and can invalidate a digital signature. Keep the signed original unchanged and verify signature status in your PDF reader. A visible signature is not proof of cryptographic validity.
Exact target sizes cannot be guaranteed: a scanned photo booklet and a text-only invoice contain very different data.
Private by default
Your document is processed on this device instead of being queued on a remote server.
Limits are visible
There is no hidden daily counter. Very large documents are limited only by the memory available in your browser.
No vague quality promise
The tool explains page flattening and which text, link, or form features to check.
Helpful answers
Frequently asked questions
How can I reduce a PDF file size?
Choose a PDF, select Balanced for most email and web uploads, then download the smaller result. Processing happens in your browser, so the document is not sent to JustUtils.
Will PDF compression reduce quality?
Balanced and Smallest File reduce image resolution and flatten each page. Preserve PDF Features avoids that quality change but usually saves less space. The page explains this before you start.
Why is my compressed PDF not much smaller?
Text-only PDFs and files that already contain optimized images have little redundant data. Try a raster preset only if a flattened, image-based result is acceptable.
Are links, forms, and selectable text preserved?
Preserve PDF Features avoids rasterizing page content and is the starting choice for text, links, and forms; check each feature in your output. Balanced and Smallest File rebuild pages as images, removing selectable text and interactive links or forms. No mode guarantees digital signature validity.
Can I compress a digitally signed PDF?
Every mode, including Preserve PDF Features, rewrites the PDF and can invalidate a digital signature. Keep the signed original unchanged and verify signature status in your PDF reader. A visible signature is not proof of cryptographic validity.
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