PDF & Image Tips & Guides

Practical answers to real PDF and image problems, and step-by-step instructions for every tool.

Latest Articles

📦 Why Is My PDF So Large? What actually takes up space in a PDF — and when compression can't help. 🔒 Passwords, Redaction & Watermarks Three different PDF security tools, and the mistake that leaves data exposed. 📄 Prepare Your Resume PDF A six-point checklist before you submit a PDF resume to an online application. ✉️ When Email Rejects Your PDF A decision tree: compress, split, or share a link — which one actually fits your file. 📐 Resize Images for Social Media Exact pixel dimensions for Instagram, TikTok, YouTube, Facebook, and X. 📷 Instagram Image Sizes: 2026 Guide Posts, Stories, Reels, Carousels, and profile pictures — every dimension explained. 🖼 PNG vs JPG Which image format to use, and why the wrong choice costs you quality or file size. ⚡ Optimize Images for Faster Websites Resizing, formats, and compression — how images affect Core Web Vitals and page speed. 🪄 Remove an Image Background When to do it, how to get a clean cut-out, and what to do with the transparent PNG after. 📱 Scanned Documents to PDF Turning phone photos of document pages into one clean, properly-ordered PDF. 📝 Why Your PDF to Word Conversion Looks Wrong What a PDF and a Word document actually are under the hood, and why that mismatch causes shifted text, broken tables, and uneditable scans. 📉 Why Compress PDF Sometimes Barely Shrinks Your File Real test files run through every compression level, including one case where the lightest setting made the file bigger. 🔍 Why Remove Background Leaves Rough Edges on Some Photos The segmentation problem behind halos, rough hair, and missing details — and what actually makes a photo easier to cut out. ⚖️ Resizing vs. Compressing an Image: What's the Difference? Real tested examples showing why a smaller image isn't automatically a smaller file, and how to pick the right operation. 📏 Why Your JPG-to-PDF File Has Such a Huge Page Size Tested directly: why a photo turns into a PDF page many feet wide, and why resizing only partly fixes it. 🔑 What Kind of Encryption Does Protect PDF Actually Use? We inspected the actual /Encrypt dictionary of a protected file to find out exactly what cipher, key length, and permissions are really in play. ✍️ Electronic Signature vs. Digital Signature: What's the Actual Difference? Two PDFs can look identically signed. We explain the cryptographic mechanism that actually separates a real digital signature from a signature-shaped image. 📝 How to Fill Out a PDF That Has No Fillable Form Fields Tested against a real fillable PDF: why some forms let you click and type while others don't, and what adding text actually does when there's no form field there. ➡️ Why Arrows Disappear When You Convert an SVG Diagram to PDF Tested directly against the actual conversion path: why marker-based arrowheads can vanish or land in the wrong place, and what reliably works instead.

How-To Guides

How to Compress a PDF How to Add Pages Numbers to PDF How to Delete Pages From a PDF How to Convert JPG to PDF How to Add a Password to secure your PDF document How to Rotate PDF pages How to Remove PDF Password How to Merge PDF files How to Split PDF files How to Convert Word to PDF How to Convert PDF to Word How to Convert PDF to JPG How to Extract Images from PDF How to Add a watermark to PDF How to Remove watermark from PDF How to Convert PDF to PNG How to Convert PNG to PDF How to Convert PDF to Excel How to Convert Excel to PDF How to Extract Text from PDF How to Sign a PDF How to Add Text to a PDF How to Hide Sensitive Information in a PDF How to Crop PDF Pages How to Convert PDF to WebP How to Convert SVG to PDF How to Compress a JPG How to Resize an Image How to Remove an Image Background