Why didn't my PDF get much smaller after compressing it?

If your PDF is mostly text (not scanned images), it's likely already fairly compact, since text-based PDFs don't carry the large embedded images that benefit most from compression.

Will compressing a PDF make scanned text harder to read?

At aggressive compression levels, yes — the embedded images can lose sharpness. Use a moderate compression setting for documents where text legibility is important, like contracts or forms.

Does compression remove any pages or content from my PDF?

No, compression only re-encodes the embedded images and internal data to take up less space; all pages and content remain exactly where they were.

Is compressing a PDF here different from compressing on my phone's built-in tools?

The underlying goal (smaller file, same content) is similar, but browser-based compression here works without installing an app and keeps your file entirely on your device throughout.

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PDF Compressor

Reduce PDF file size by optimizing its internal structure — processed locally in your browser.

Last updated: 22 August 2026

📁 Click to select a PDF file, or drag & drop it here

Compression Level

Pages to Compress (optional)

Only the listed pages will be included in the output file. Leave blank to keep every page.

Remove metadata (title, author, producer info)

Flatten form fields (if the PDF has fillable forms)

Standard mode losslessly cleans up the PDF's internal structure and is safest for text-heavy documents. Switch to Strong mode when your PDF contains large scanned pages or high-resolution images and you need a much smaller file.

How to Use PDF Compressor

Upload Your PDF

Choose the PDF file you want to shrink.

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Choose a Compression Level

Select a compression level, page resolution, and image quality setting.

→

Download the Compressed PDF

Preview the size reduction and download your smaller PDF file.

PDF Compressor

How to Use PDF Compressor

Upload Your PDF

Choose a Compression Level

Download the Compressed PDF

Related Tools

Related Guide

How to Compress a PDF File