Compress PDF to 3MB
Shrink a PDF to under 3 MB for forms, portals and email. It runs in your browser, so your file never leaves your device.
Drop a PDF file here
or click to browse — target size: 3 MB
Enter the password to continue.
Targets 3 MB
Tries several quality levels until the file fits under 3 MB.
100% Private
Compression runs locally. Nothing is uploaded.
Free & Unlimited
No account, no watermark, no file limits.
How to compress a PDF to 3MB
Three quick steps. Nothing to install.
Add your PDF
Drag a PDF onto the box above or click it to choose a file. If it has a password, you will be asked for it.
Press compress
The tool tries a lossless clean-up first, then lowers quality step by step until the file is under 3 MB. You can watch the progress and cancel at any time.
Download
Check the new size, then download your smaller PDF.
Why do you need a PDF under 3MB?
A 3 MB limit appears on some job sites, university and exam portals, and online application forms. It is far more generous than 1 MB, so most documents keep sharp text and clear photos. Files that go over 3 MB are usually phone scans, photo-heavy PDFs, or exports with large embedded images.
Some email systems and chat apps also struggle with large attachments. A small PDF uploads faster on a slow connection, which helps a lot on mobile data.
How this tool gets your file under 3MB
It works in stages, so you keep as much quality as possible:
- Lossless clean-up first. The tool rebuilds the file structure without changing how pages look. Text stays selectable. If this is enough, you are done.
- Image compression next. If the file is still too big, each page is re-encoded as an image at a lower quality and resolution. It repeats with stronger settings until the size is under 3 MB.
- Best effort if needed. If 3 MB is not possible without making the pages unreadable, the tool tells you the smallest size it reached.
Tips if your PDF is still too large
- Split it. A scan of 100 or more pages may still be over 3 MB. Use Split PDF to send only the pages you need.
- Scan at a lower resolution. 150 DPI black and white is enough for most forms.
- Shrink photos first. If your PDF is made of pictures, run them through the Image Compressor and then rebuild the PDF with JPG to PDF.
- Combine afterwards. Need several documents in one file? Use Merge PDF after you compress each one.
Need a different size? Try Compress PDF to 200KB, Compress PDF to 500KB, Compress PDF to 1MB, or the standard Compress PDF tool for full control over quality.
Frequently asked questions
Quick answers about compressing a PDF to 3MB.
How do I compress a PDF to under 3MB?
Drop your PDF into the box above and press the compress button. The tool tries a lossless clean-up first, then lowers image quality and resolution step by step until the file is under 3 MB or it reaches the smallest readable result. Then you download the file.
Will my PDF still be readable after compressing to 3MB?
Yes, in almost every case. 3 MB leaves plenty of room, so most documents stay sharp. Pages are only converted to images, which makes the text unselectable, when a lossless clean-up is not enough.
Why is my PDF still bigger than 3MB?
Very long documents, such as scans of 100 pages or more, can still be over 3 MB. Split the PDF into smaller parts, remove pages you do not need, or rescan at a lower resolution, then compress again.
Can I compress a password-protected PDF?
Yes. Enter the password when asked. It is used only in your browser and is never uploaded. The compressed copy is not password-protected, and its pages are re-encoded as images.
Is it safe to upload my documents here?
Nothing is uploaded. The compression runs inside your own browser, so your file stays on your device. That makes it a good fit for ID copies, certificates and application documents.
Does this work on a phone?
Yes. It works in any modern browser on Android, iPhone, Windows and Mac. Large PDFs can take longer on older phones, so try a smaller file first.
Is there a watermark or a limit?
No watermark, no account and no daily limit. You can compress as many PDFs as you like.