Free PDF compressor
A 5 MB target is generous enough for most professional documents while staying under the attachment limits of all major email providers. Gmail allows up to 25 MB, Outlook allows 20 MB, and even conservative corporate email systems typically accept 10 MB. At 5 MB, you can preserve high-quality images in marketing materials, maintain full-resolution charts in annual reports, and keep scanned documents with readable fine print. This is the right target when quality matters more than minimizing bytes -- for example, when sharing a proposal with a client who will review it on a high-resolution display.
Free. No signup. Files deleted within 1 hour on the free tier.
Open the SecurePDF AI Compress tool and drag your file onto the upload area. Files up to 100 MB are accepted on the free tier.
Choose the mode that fits your 5MB target. Start with light compression -- if the result is still too large, switch to heavy mode (or convert color scans to grayscale first for the largest gains).
Click Compress, then download the result. Check that the file size is under 5MB and scroll through key pages to confirm the visual quality is acceptable.
The 5 MB target works well for image-rich documents where quality is important. Marketing brochures, portfolios, and detailed technical documents all fit comfortably at this size while remaining easy to share via email or file transfer.