Compress PDF to 1MB
Shrink a PDF to under 1 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: 1 MB
Targets 1 MB
Tries several quality levels until the file fits under 1 MB.
100% Private
Compression runs locally. Nothing is uploaded.
Free & Unlimited
No account, no watermark, no file limits.
How to compress a PDF to 1MB
Three quick steps. Nothing to install.
Add your PDF
Drag a PDF onto the box above or click it to choose a file.
Press compress
The tool tries a lossless clean-up first, then lowers quality step by step until the file is under 1 MB.
Download
Check the new size, then download your smaller PDF.
Why do you need a PDF under 1MB?
Many portals and email systems limit attachments to 1 MB. That is enough for a multi-page document, but phone scans and photo-heavy PDFs are often 5 MB or more, so they need compressing before you can upload them.
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 1MB
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 1 MB.
- Best effort if needed. If 1 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 very long scan may still be over 1 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 100KB, Compress PDF to 200KB, Compress PDF to 500KB, or the standard Compress PDF tool for full control over quality.
Frequently asked questions
Quick answers about compressing a PDF to 1MB.
How do I compress a PDF to under 1MB?
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 1 MB or it reaches the smallest readable result. Then you download the file.
Will my PDF still be readable after compressing to 1MB?
Usually yes for normal documents. If a lossless clean-up is not enough, pages are converted to images, so the text stays visible but can no longer be selected or searched. Very small targets on image-heavy files can look softer.
Why is my PDF still bigger than 1MB?
Files with many pages, large photos or full-page scans can be too heavy to reach 1 MB without looking blurry. Split the PDF into smaller parts, remove pages you do not need, or rescan at a lower resolution, then compress again.
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.