Compress PDF Online – Reduce PDF File Size for Free

Shrink large PDF files so they’re easy to email, upload and share, while keeping them sharp and readable. Choose your compression level — free, no sign-up.

Drop files or click here
or press Ctrl+V to paste · add from phone, Google Drive, Dropbox, OneDrive or a link
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Free online PDF compressor

Make big PDFs small — without making them ugly

Email bounced because the attachment is too big? Upload portal has a size limit? iHeartPDF Compress PDF reduces the file size of your PDFs while keeping text crisp and images clear.

Choose between high quality with lighter compression or our recommended setting for the best balance of size and quality. You’ll see an estimated size before you download.

100% freeNo sign-upNo watermarkWorks on any device

How to compress a PDF in 3 easy steps

1

Upload your PDFs

Drag and drop one or more files into the box above or click Choose Files.

2

Choose a compression level

Pick Less compression for maximum quality or Recommended for the best balance of size and quality.

3

Compress & download

Click compress and download your smaller PDF in seconds.

Why compress PDFs with iHeartPDF?

🗜️

Big size savings

Cut file size dramatically so PDFs fit email limits and upload forms.

🎚️

You control quality

Two compression levels and an estimated file size help you choose the right result.

📂

Batch compression

Compress several PDFs in one go instead of one at a time.

🔒

Private & secure

Files travel over an encrypted connection and are automatically deleted from our servers within 2 hours.

💯

Free with no watermark

No account, no trial limits and no watermark added to your files. Use it as often as you like.

📱

Works on any device

Use it on Windows, Mac, Linux, iPhone or Android — in any modern browser, with nothing to install.

Perfect for

  • Emailing large PDFs without hitting attachment limits
  • Uploading documents to job, visa or university portals
  • Saving storage space on your computer or cloud
  • Speeding up downloads of PDFs on your website
  • Sharing scanned documents over messaging apps

Pro tips

  1. Scanned documents and image-heavy PDFs usually shrink the most.
  2. Printing the file? Choose Less compression to keep images at their best.
  3. Removing unneeded pages first with Remove PDF Pages makes files even smaller.

Frequently asked questions

Upload your PDF, choose a compression level and download the compressed file. It’s free, with no sign-up and no watermark.

Our recommended setting keeps documents looking great while greatly reducing size. If quality matters most, choose Less compression.

Yes. Upload multiple files and compress them all in one go.

It depends on the content. Image-heavy and scanned PDFs often shrink a lot, while text-only files are already small. An estimated size is shown before you compress.

Yes. Files are transferred over a secure, encrypted connection and automatically deleted from our servers within 2 hours. We never share or keep your documents.

Absolutely. iHeartPDF works in any modern browser on iPhone, Android, tablets, Windows, Mac and Linux — no app or software installation needed.

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Ready to shrink your PDF?

Scroll up, drop in your files and get smaller PDFs in seconds — free, forever.

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