Duronto Tech - Free Online Tools
PDF Tools

PDF Compressor

Compress PDF files to reduce file size.

.pdf Max: 50 MB

Click to upload or drag and drop

Supported: PDF

How to Use PDF Compressor

1

Upload the PDF that is too large, using drag-and-drop or the browse button; files up to 50 MB are supported.

2

Choose a compression level, starting mild for a text document and going stronger if the pages are scanned photographs.

3

Click the "Compress" button and wait while the pages are re-encoded, which usually takes only a few seconds.

4

Compare the original and compressed sizes shown on the result screen, then download the smaller file and open it to confirm it still reads clearly.

Features

Reduces PDF size by up to 90 percent on scanned documents
Multiple compression levels so you control the quality trade-off
Free to use with no sign-up, watermark or page limits
Accepts files up to 50 MB, which covers most oversized documents
Before and after file size shown instantly after processing
Uploads are deleted automatically once compression finishes

Frequently Asked Questions

Text-heavy files usually shrink by 30 to 60 percent, while scanned photo documents can drop by 70 to 90 percent. The result depends on how much image data the pages hold.
Vector text and selectable text stay perfectly sharp at every level. Only embedded photographs get re-encoded, and mild levels keep them looking essentially identical.
It is free with no account and no feature locked behind payment. The only trade-off is the choice of compression strength, which you control.
You can upload PDFs up to 50 MB, which is larger than the oversized files most upload portals reject. Anything over that can usually be shrunk in two passes.

Related Tools

JPG to PDF

Convert JPG images to PDF documents online.

PNG to PDF

Convert PNG images to PDF format online.

Images to PDF

Combine multiple images into a single PDF document.

PDF to JPG

Convert PDF pages to JPG images.

PDF to PNG

Convert PDF pages to PNG images.

PDF Merger

Merge multiple PDF files into one document.

About PDF Compressor

Scanned contracts, photo-heavy brochures and exported reports routinely end up in the 10 to 40 MB range, which trips upload limits on job portals, court forms, visa systems and even some email servers. This compressor rewrites the PDF at a lower weight while keeping every page, its text and its images intact and readable.

Rather than a single hidden setting, you pick a compression level that matches the job. Mild compression is usually enough for a text document that is merely a little oversized. Stronger levels shrink scanned photo pages dramatically, which is where the biggest savings live, since those pages carry the heavy data.

The input limit is a generous 50 MB, so the large files that need compressing in the first place are the ones it can actually accept. After processing you get a before-and-after size comparison, and the smaller file downloads as a standard PDF that opens anywhere.

When to Use This Tool

  • Getting a file under the upload limit on government, court or visa portals
  • Attaching a scanned document to an email that rejects large attachments
  • Getting under the strict upload cap on job and scholarship application forms
  • Freeing up storage on a phone by shrinking stored reports and manuals
  • Speeding up uploads to cloud storage or a client portal with a slow connection