PDF300 guides https://pdf300.com/blog/ Practical guides to PDF file size and compression. en How to Compress a PDF to a Specific File Size (Under 2, 5, 10, 25 or 100 MB)https://pdf300.com/blog/compress-pdf-to-specific-size/https://pdf300.com/blog/compress-pdf-to-specific-size/Need a PDF under 10, 25 or 100 MB? What decides PDF size, how to set a target, and a step-by-step method that lands under the limit with legible text.Fri, 30 Oct 2026 09:00:00 +0000 PDF Too Large to Email? How to Get Under Gmail's 25 MB Limit (and Outlook's 20 MB)https://pdf300.com/blog/pdf-too-large-to-email/https://pdf300.com/blog/pdf-too-large-to-email/Gmail allows 25 MB per message, Outlook 20–25 MB, and email encoding eats about a third. The real target size for a PDF attachment, and how to hit it.Fri, 30 Oct 2026 09:00:00 +0000 PDF Upload Size Limits for Courts, Immigration, Grants and Government Portals (Checklist)https://pdf300.com/blog/pdf-upload-size-limits-portals/https://pdf300.com/blog/pdf-upload-size-limits-portals/Court e-filing allows 4–100 MB per PDF depending on the court; USCIS allows 12 MB per file; email 20–25 MB. Published limits with sources, and how to fit them.Fri, 30 Oct 2026 09:00:00 +0000 How to Reduce a Scanned PDF's File Size Without Making It Unreadablehttps://pdf300.com/blog/reduce-scanned-pdf-size/https://pdf300.com/blog/reduce-scanned-pdf-size/A scanned PDF is a stack of photos. Why scans are huge, what resolution and color mode you really need, and how to compress one while the text stays readable.Fri, 30 Oct 2026 09:00:00 +0000 How to Compress a Very Large PDF (100 MB to 1 GB+): Drawing Sets, Portfolios, Scan Batcheshttps://pdf300.com/blog/compress-large-pdf-over-100mb/https://pdf300.com/blog/compress-large-pdf-over-100mb/Files over 100 MB fail in browsers, email and most online tools. How to compress a huge PDF — drawing sets, portfolios, scan batches — to a 100–300 MB cap.Fri, 30 Oct 2026 09:00:00 +0000 Why Is My PDF So Large? 7 Causes and How to Fix Each Onehttps://pdf300.com/blog/why-is-my-pdf-so-large/https://pdf300.com/blog/why-is-my-pdf-so-large/A 12-page PDF should not be 60 MB. The seven usual causes — oversized images, scans, full fonts, hidden attachments, revision history — with a fix for each.Fri, 30 Oct 2026 09:00:00 +0000 Ghostscript PDF Compression: Presets, Commands, and Why the Output Is Sometimes Biggerhttps://pdf300.com/blog/ghostscript-pdf-compression-guide/https://pdf300.com/blog/ghostscript-pdf-compression-guide/Ghostscript's pdfwrite device compresses PDFs from the command line. Presets, downsampling and JPEG-quality flags, a target-size loop, and when the output grows.Fri, 30 Oct 2026 09:00:00 +0000 How to Compress a PDF on Windows Without Adobe Acrobat (Free Methods That Work)https://pdf300.com/blog/compress-pdf-windows-without-acrobat/https://pdf300.com/blog/compress-pdf-windows-without-acrobat/No Acrobat Pro? Compare Word's export settings, Microsoft Print to PDF, Ghostscript, free desktop apps and target-size online tools — and when each one fits.Fri, 30 Oct 2026 09:00:00 +0000 Is It Safe to Compress a PDF Online? A Privacy Checklist Before You Uploadhttps://pdf300.com/blog/online-pdf-compressor-privacy/https://pdf300.com/blog/online-pdf-compressor-privacy/Uploading a PDF means trusting a server with it. What to check first — retention, encryption, logging, page scripts — and when to compress offline instead.Fri, 30 Oct 2026 09:00:00 +0000 Compress a PDF Without Losing Quality: What DPI, JPEG Quality and Downsampling Actually Dohttps://pdf300.com/blog/compress-pdf-without-losing-quality/https://pdf300.com/blog/compress-pdf-without-losing-quality/'No quality loss' is a marketing phrase. What lossless and lossy mean inside a PDF, how much resolution screens, print and OCR need, and how to choose settings.Fri, 30 Oct 2026 09:00:00 +0000