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Why Is My PDF So Large? 7 Causes and FixesA large PDF is usually caused by high-DPI scans, colour images, embedded fonts or old edit history. Here are the 7 real causes and the fix for each.How to Get a PDF Under 1MB for Job and College ApplicationsMany job and college portals cap uploads at 1MB. Here is how to compress a resume, marksheet or certificate PDF under that limit without losing readability.How to Reduce a PDF to Under 200KB for Govt Portal UploadsCompress a PDF to under 200KB in a browser for scholarship or admission portals. Includes a legibility check and what to do with heavy scans.How to Compress a PDF to 100KB on Your PhoneCompress a PDF to under 100KB on Android or iPhone in a browser, no app install. Includes what to do when a photo-heavy scan will not shrink enough.