How can I compress a PDF using your tool?

To compress a PDF using our tool, all you have to do is upload your document and reduce the PDF file size to your desired specifications. When done, you can download the compressed file.

Will compressing a PDF affect its quality?

Compression does affect quality to some degree, but pdf.net lets you choose the compression level so you stay in control of the tradeoff between file size and quality.

Is it safe to compress PDFs online?

Yes, it’s safe to compress PDFs online with pdf.net. Our editor uses HTTPS encryption and processes your files on secure servers that are not shared with third parties.

Can I compress multiple PDFs at once?

No, you can’t compress multiple PDFs at once since batch compression isn’t supported. However, you can still compress multiple files by processing them one at a time.

Is PDF compression free?

No, PDF compression is a paid feature on pdf.net. However, with our online editor, you can compress your files online without any software downloads.

Are there any file size limits for uploading?

Yes, there’s a 500 MB file size limit for uploading documents on pdf.net. So, if you want to shrink PDFs larger than 500 MB, you may need to split the PDF into separate parts until each part meets the file limit.

Can I compress a password-protected PDF?

Yes, you can compress a password-protected PDF as long as you have the password. If you don’t have the password, you’ll need to create an unlocked copy of the document before compressing it.

Which devices and browsers are supported?

All devices and browsers are supported by pdf.net. As long as you have an internet connection, you can use our online tool for PDF file optimization on your mobile phone, laptop, or tablet.

What file size can I reduce my PDF to?

With pdf.net, you can reduce your PDF to a size that works best for you, such as 500KB, 200 KB, or lower, depending on your original file and desired quality.

What to do if a PDF is too large for email?

If a PDF is too large for email, you can use pdf.net to reduce its size. If you’re worried about getting blurry or low-quality text when you compress PDFs for email, upload the file to our online editor and compress it to reduce the file size before sending, keeping the quality intact.

What’s the difference between reduced and optimized PDF size?

Reducing a PDF simply decreases the file size through compression. Optimizing goes further—it lets you adjust image resolution and other elements for more control over the output.

What file formats are supported for compression?

Shrink a PDF’s file size online with three compression levels. pdf.net also accepts Word documents (DOC, DOCX) and JPG and PNG images, and your file opens in the editor.

Instant Online PDF Compression Tool

Effortlessly compress large PDF files without sacrificing document quality using pdf.net’s convenient online PDF compression tool — fast, secure, and user-friendly.

Supports PDF, DOC, DOCX, PPT, PPTX, JPG, PNG, HEIC, HEIF

Files stay private

Needed a quick solution to compress a PDF document and PDF.net was so easy!

Gregory MeyersTrustpilot review

Start editing your PDF

All PDF tools in one place

No installs, no app-switching — works on any device

Compress

Reduce PDF file size with 3 compression levels.

Merge Files

Combine multiple PDFs into one. Reorder files before merging.

Compare PDF

Spot every change between two PDFs. View side by side or overlay.

Convert PDF to Word

Convert PDF to editable DOC/DOCX. Retain layout & fonts.

Sign Document

Type, draw, or upload signature. Legally binding.

Remove Signature Background

Make your signature transparent to sign PDFs without a white box.

Request Signature

Send PDFs to anyone for signing. Mark where to sign, invite by email. Get signed document back.

Share PDF

Upload and share PDF via secure link or email in seconds. Control who can view or edit.

More tools

Convert Word to PDF

Transform DOC/DOCX to PDF. Preserve formatting.

Convert Markdown to PDF

Paste or upload your .md file and get a formatted PDF in seconds. Tables and code blocks included.

Convert PNG to PDF

Combine multiple PNG images into one PDF. Resolution maintained.

Convert PDF to PNG

Split PDF pages into separate PNGs. Full resolution preserved.

Convert JPG to PDF

Merge JPEG photos into a single PDF file without losing quality.

Convert HEIC to PDF

Turn iPhone HEIC photos into a shareable PDF. Opens on any device.

Convert PDF to JPG

Turn PDF pages into separate JPEG images. Ready to share or upload.

PDF to Excel

Turn PDF tables into editable spreadsheets ready to use in Excel or Google Sheets.

PDF to CSV

Extract table data from PDFs into clean CSV files ready for spreadsheets and data analysis.

PDF to PowerPoint

Get editable PPT & PPTX slides. Keep fonts & layout.

Convert PowerPoint to PDF

Turn PPT & PPTX into a share-ready PDF. Opens on any device.

Bank Statement to Excel

Convert PDF bank statements to editable Excel or CSV files for accounting and analysis.

Add Text

Customize font, size & color. Move & resize easily.

Change Text

Edit PDF text directly. Change font, size, color.

Add Image

Add logos, photos & graphics to PDFs. Adjust size and position.

Split File

Split PDF into multiple files. Choose any page to divide.

Rotate Pages

Adjust PDF orientation easily. Choose single, multiple, or all pages.

Rearrange Pages

Drag & drop to reorganize. Delete, duplicate, rotate pages.

Annotate

Mark up PDFs: draw, highlight, erase. Multiple colors & line widths.

Add Page Numbers

Number pages automatically. Choose position, format, margins.

Bates Numbering

Add Bates numbers automatically. Choose prefix, suffix, and numbering style.

Extract Pages

Select the pages you need and save them as a new PDF.

Protect PDF

Secure PDF from unauthorized use with a password.

Unlock PDF

Remove passwords and restrictions with just a few clicks.

Chat with PDF

Ask AI any questions about your PDF.

PDF Summarizer

Summarize PDFs into key points with AI.

Generate PDF

Describe a doc you need and get a formatted PDF.

How to compress PDF in no time

1
Upload your PDF file
2
Reduce PDF file size to desired specifications
3
Download the compressed file

Why people prefer pdf.net

Simple and easy for daily use
Our online PDF editor features a clean, intuitive, and user-friendly interface designed for amateurs and professionals alike. You can navigate it with ease and edit your PDF file, even if you’ve never done it before.
All‑in‑one PDF editor
Our editor offers a robust and comprehensive set of features that allow you to customize your documents, merge them, sign them, and much more. No need to transfer your files between several applications anymore.
Keeping formatting without issues
No more messy documents and inconsistent formatting across multiple systems or devices. Our online PDF editor is cross-platform compatible and maintains uniformity whether you’re using a PC, MacOS, smartphone, or tablet.

People all over the world trust pdf.net to edit their docs

Great product for anyone looking for something easy to use and that reads the font really well

JuntosTrustpilot review

Great product for anyone looking for something easy to use and that reads the font really well

JuntosTrustpilot review

I was able to delete the tablature on a PDF guitar download and get the results I needed. Thank you, gracias, arrigato, toda, danka.

jjayTrustpilot review

All in all, an excellent all-around tool that's become a real fixture in my day-to-day.

hans005AppSumo review

The interface is clean and easy to understand, and the main PDF tools are simple to use without unnecessary complexity. Uploading, editing, organizing, sharing, and signing documents feels smooth and intuitive. So I don’t need to install extra software. Highly recommended.

Colin MTrustpilot review

Frequently asked questions

How can I compress a PDF using your tool?: To compress a PDF using our tool, all you have to do is upload your document and reduce the PDF file size to your desired specifications. When done, you can download the compressed file.
Will compressing a PDF affect its quality?: Compression does affect quality to some degree, but pdf.net lets you choose the compression level so you stay in control of the tradeoff between file size and quality.
Is it safe to compress PDFs online?: Yes, it’s safe to compress PDFs online with pdf.net. Our editor uses HTTPS encryption and processes your files on secure servers that are not shared with third parties.
Can I compress multiple PDFs at once?: No, you can’t compress multiple PDFs at once since batch compression isn’t supported. However, you can still compress multiple files by processing them one at a time.
Is PDF compression free?: No, PDF compression is a paid feature on pdf.net. However, with our online editor, you can compress your files online without any software downloads.
Are there any file size limits for uploading?: Yes, there’s a 500 MB file size limit for uploading documents on pdf.net. So, if you want to shrink PDFs larger than 500 MB, you may need to split the PDF into separate parts until each part meets the file limit.
Can I compress a password-protected PDF?: Yes, you can compress a password-protected PDF as long as you have the password. If you don’t have the password, you’ll need to create an unlocked copy of the document before compressing it.
Which devices and browsers are supported?: All devices and browsers are supported by pdf.net. As long as you have an internet connection, you can use our online tool for PDF file optimization on your mobile phone, laptop, or tablet.
What file size can I reduce my PDF to?: With pdf.net, you can reduce your PDF to a size that works best for you, such as 500KB, 200 KB, or lower, depending on your original file and desired quality.
What to do if a PDF is too large for email?: If a PDF is too large for email, you can use pdf.net to reduce its size. If you’re worried about getting blurry or low-quality text when you compress PDFs for email, upload the file to our online editor and compress it to reduce the file size before sending, keeping the quality intact.
What’s the difference between reduced and optimized PDF size?: Reducing a PDF simply decreases the file size through compression. Optimizing goes further—it lets you adjust image resolution and other elements for more control over the output.
What file formats are supported for compression?: Shrink a PDF’s file size online with three compression levels. pdf.net also accepts Word documents (DOC, DOCX) and JPG and PNG images, and your file opens in the editor.

Instant Online PDF Compression Tool