CrunchyPDF

Free â€ĸ Client-Side â€ĸ 5 PDF Tools â€ĸ No Uploads

PDF Guides & How-Tos
📚 PDF Guides & How-Tos

PDF Guides & How-Tos

Clear, practical guides to getting the most out of your PDFs — how the technology actually works, how to solve the most common headaches, and how to keep your documents private along the way. No jargon, no fluff.

Fundamentals

How PDF Compression Actually Works

What's inside a PDF, why files get big, and the difference between lossy and lossless — so you can shrink a file without wrecking it.

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Privacy

Are Online PDF Tools Safe?

What really happens when you upload a document to a free PDF website — the risks, and how to check a tool before you trust it.

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How-To

Reduce a PDF File Size for Email

Attachment too big? A step-by-step method to get any PDF under the limit — privately, without uploading it anywhere.

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Troubleshooting

Why Is My PDF So Large?

A 10-page file shouldn't be 40 MB. The usual culprits — scans, photos, leftover data — and the quick fix for each.

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Explained

Client-Side vs Server-Side PDF Tools

Two tools can look identical and handle your file in opposite ways. What each means for privacy, speed, and offline use.

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How-To

How to Merge and Split PDFs

Combine and divide PDFs the lossless way — keeping text, links, and quality intact. Page-range syntax made simple.

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How-To

Converting Images to PDF and Back

Turn JPEGs and phone photos into one PDF, or export PDF pages as images. Format tips and resolution advice included.

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Privacy

Handling Sensitive PDFs Safely

Tax returns, medical records, contracts — a practical guide to processing private documents without exposing them.

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🧰 Done reading? Jump back to the free PDF tools — all five run in your browser.