Most email providers cap attachments at 25MB. Shrink your PDF in seconds so it sails through every inbox — completely free and private.
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Gmail, Outlook, and Yahoo all allow attachments up to 25MB. Many corporate email servers set lower limits of 10MB or even 5MB. Our compressor can help you get under any of these thresholds.
No. PDFShift compresses by stripping unnecessary metadata and optimizing internal object streams. The visual content — text, images, and layout — remains identical.
No. All compression happens locally in your browser. Your file never leaves your device, making it safe for sensitive documents like contracts, tax forms, and medical records.
Get notified about new PDF tools
AI-powered features coming soon — summarize, chat with, and extract data from PDFs.