Evergreen explanations of image formats, compression concepts, and conversion.
- PDF vs Word — Use Word when you need to edit; use PDF when you need a stable layout for sharing or printing.
- What is a PDF — PDF is a portable document format designed to preserve layout across devices and printers.
- JPG vs PNG — Choose JPG for photos and PNG for sharp graphics with transparency.
- PNG vs WEBP — WEBP often matches PNG features at smaller sizes; PNG remains the safest lossless default.
- WEBP vs AVIF — AVIF often wins on size; WEBP currently offers broader tooling comfort.
- JPEG vs JPG — JPEG and JPG are the same format—only the file extension differs.
- Lossy vs Lossless Compression — Lossy discards data to save size; lossless preserves exact pixel values.
- Raster vs Vector Images — Raster images are pixel grids; vectors are math shapes that scale cleanly.
- What is Transparency — Transparency lets parts of an image be see-through using an alpha channel or color key.
- What is Image Compression — Image compression reduces file size by encoding pixels more efficiently—with or without quality loss.
- How Image Conversion Works — Conversion decodes pixels from one format and re-encodes them into another.
- What is PDF Compression — PDF compression reduces file size so documents fit email, forms, and upload limits.
- When to Use PNG — Use PNG for sharp graphics, screenshots, and images that need transparency.
- When to Use JPG — Use JPG for photographs and other continuous-tone images when file size matters.
- Why WEBP is Smaller — WEBP’s modern predictors and coding tools often beat older JPG/PNG pipelines on size.
- Image Formats Overview — A quick map of common image codecs and when each fits.
- Image Transparency — How alpha transparency works across PNG, WEBP, GIF, and JPG.