Is there a file size limit?

Browser memory limits apply. Most documents under 50MB work well.

Yes. All PDF tools on Ranburg.com are free.

Why didn't my PDF get smaller before?

Rewriting PDF structure alone rarely shrinks files. This compressor re-renders each page and saves it as a compressed JPEG, which is what reduces size on scans and image PDFs.

Can I still copy text after compressing?

Pages are stored as images, so text is no longer selectable. Keep the original if you need to copy text or search inside the PDF.

How to Use PDF Compressor — Free Guide

Featured free tool

PDF Compressor

Reduce PDF file size by recompressing pages as JPEG — scans and photo PDFs shrink the most.

PDF Optimizer

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What is the PDF Compressor?

Reduce PDF file size by recompressing pages as JPEG — scans and photo PDFs shrink the most. The PDF Compressor on Ranburg.com is a free, browser-based utility — no signup, no install. This guide explains how to use it effectively and when to reach for it in your daily workflow.

Reduce PDF file size by recompressing pages as JPEG — scans and photo PDFs shrink the most. Use PDF Compressor online for free — fast, secure, no software or signup required. Instant results in your browser.

Try the PDF Compressor Now

Open the free PDF Compressor at ranburg.com/tools/pdf-compressor. Results update instantly as you change inputs. Bookmark the page for repeat use — it works on desktop and mobile browsers.

How to Use It Step by Step

Step 1

Upload a PDF (scans and photo-heavy files shrink the most).

Step 2

Pick High quality, Balanced, or Smallest.

Step 3

Click Compress PDF and download the smaller file.

How It Works

PDF.js rasterize each page → JPEG encode → pdf-lib embed at original page size

Tips for Best Results

Use the PDF Compressor for quick, repeatable tasks rather than one-off guesses. Compare multiple scenarios by adjusting inputs, export or copy results, and pair this tool with related utilities listed on the tool page. For production or compliance decisions, validate outputs with official sources or qualified professionals.

Conclusion

The PDF Compressor is part of Ranburg.com's free tools library. Use this guide as a reference, then head to /tools/pdf-compressor whenever you need pdf optimizer workflows done fast.