A PDF over 1 MB can cause problems — email systems reject it, upload portals refuse it, and WhatsApp struggles with it. Here's how to compress any PDF to under 1 MB for free, right in your browser.
Why 1 MB matters
1 MB (megabyte) is a common threshold for many systems. Email attachments in corporate environments are often capped at 1–2 MB per file. Some HR systems, application portals and legal document platforms refuse files larger than 1 MB. A CV with photos, a scanned contract, or a multi-page form can easily exceed this limit.
How to compress a PDF to under 1 MB — free
Open Bisnep PDF Compress tool
Go to bisnep.com/compress-pdf-quality — free, no account needed.
Upload your PDF
Drop the file onto the page. It stays in your browser — nothing is sent to any server.
Choose compression level
For most PDFs, medium compression is enough to reach under 1 MB while keeping good quality. For larger files, try maximum compression.
Download and verify the size
Download the compressed PDF and check the file size before sending.
What if medium compression isn't enough?
If the PDF is still over 1 MB after compression, try these additional steps:
- Convert to greyscale: Use the PDF to Greyscale tool. Removing colour can cut file size by 30–50%.
- Delete blank or unnecessary pages: Use the Delete Pages tool. Every page you remove reduces the file size proportionally.
- Compress at maximum setting: Go back to the compress tool and use the highest compression setting. Image quality will be lower but the file will be much smaller.
How much can I expect to compress?
| Original Size | After Medium Compression | After Max Compression |
|---|---|---|
| 10 MB (scanned photos) | 2–4 MB | 0.5–1.5 MB |
| 5 MB (mixed content) | 1–2 MB | Under 1 MB |
| 3 MB (scanned text) | Under 1 MB | 300–600 KB |
| 2 MB (image-heavy PDF) | Under 1 MB | 200–500 KB |
Always keep a copy of the original PDF before compressing. Once you compress and save, you cannot recover the original quality. Store the original in a safe folder.
Bisnep PDF compresses your files entirely in your browser. Your PDF never gets sent to any server, so sensitive documents like payslips, contracts or medical files stay completely private.
Works on all devices
The Compress PDF tool works on Windows, Mac, iPhone, Android and any other device with a modern browser. No app to install, no software to download.