Shrinking PDF files before sending them via email is essential to prevent delivery failures caused by strict attachment size limits. Most major email service providers, including Gmail and Outlook, impose a hard cap of 20MB to 25MB on total message size. If your file exceeds this budget, your email will bounce, fail to send, or force the recipient to navigate an external cloud link to view the document. Why PDFs Get Too Large
High-Resolution Images: Scanned contracts, colorful graphs, and photography add massive weight to the file.
Embedded Fonts: TrueType or OpenType fonts embedded inside the document to keep layouts intact take up significant data storage.
Hidden Metadata: Editing software like Adobe Acrobat retains extensive historical junk, layers, and interactive object data. Crucial Reasons to Shrink Your PDFs
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