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Short, practical write-ups on the questions that bring people to a PDF tool — getting a file to the exact size a form wants, without the jargon.

How to compress a PDF to 300KB (free, online)

Why forms ask for 300 KB, the fastest free way to get there in your browser, and what to do when a file won't shrink.

How to Compress a PDF to a Specific File Size (Under 2, 5, 10, 25 or 100 MB)

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.

PDF Too Large to Email? How to Get Under Gmail's 25 MB Limit (and Outlook's 20 MB)

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.

PDF Upload Size Limits for Courts, Immigration, Grants and Government Portals (Checklist)

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.

How to Reduce a Scanned PDF's File Size Without Making It Unreadable

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.

How to Compress a Very Large PDF (100 MB to 1 GB+): Drawing Sets, Portfolios, Scan Batches

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.

Why Is My PDF So Large? 7 Causes and How to Fix Each One

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.

Ghostscript PDF Compression: Presets, Commands, and Why the Output Is Sometimes Bigger

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.

How to Compress a PDF on Windows Without Adobe Acrobat (Free Methods That Work)

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.

Is It Safe to Compress a PDF Online? A Privacy Checklist Before You Upload

Uploading a PDF means trusting a server with it. What to check first — retention, encryption, logging, page scripts — and when to compress offline instead.

Compress a PDF Without Losing Quality: What DPI, JPEG Quality and Downsampling Actually Do

'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.

How to Compress a PDF on a Mac for Free (Preview, Quartz Filters, and When to Use a Target-Size Tool)

Compress a PDF on your Mac for free using Preview's Reduce File Size, a custom Quartz filter, or a target-size tool when you need an exact limit.

How to Compress a PDF on iPhone or iPad (Files, Shortcuts, and the Print-to-PDF Trick)

iOS has no built-in PDF size slider, so here are the realistic routes: the Files app, a Shortcuts automation, the print-to-PDF re-save trick, and a target-size tool.

How to Compress a PDF on Android (Share to a Tool, the Drive Route, and the Print-to-PDF Trick)

Compress a PDF on Android by sharing it to a web tool, using the Google Drive and print-to-PDF routes, or an app, and learn why scanner-app PDFs are so large.

How to Compress a PDF Using Google Drive or Google Docs (What Works and What Does Not)

Google Drive stores PDFs but does not compress them. Here are the realistic routes with Google Docs and a target-size tool, plus what Drive genuinely cannot do.

How to Shrink a PDF Exported from PowerPoint (Compress Pictures, Crop Cleanup, and Export Settings)

Your PowerPoint PDF is huge because of the images. Learn to compress pictures, delete cropped areas, and pick export settings so the exported PDF stays small.

How to Compress a PDF Exported From Microsoft Word Without Losing Readability

Your Word document turned into a huge PDF? Learn to re-export at minimum size, downsample images in Compress Pictures, and when to compress the PDF instead.

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