ConvertUp / Guides
Image and PDF guides
Short, plain answers about file formats, sizes and conversions. Each guide links to a free tool you can use right away.
- JPG vs PNG: Which One Should You Use?A plain comparison of JPG and PNG: file size, quality, transparency and when each one is the right choice.
- What Is WebP, and Is It Better Than JPG?What the WebP image format is, how much smaller it is than JPG and PNG, where it works and when to convert it.
- How to Reduce Image Size for EmailMake photos small enough to email: know the attachment limits, shrink the pictures and avoid bounced messages.
- How to Compress an Image to 100 KBGet a photo down to 100 KB, 500 KB or 1 MB: which settings to change and in what order, with honest expectations.
- How to Make a PNG File SmallerWhy PNG files are big and the easiest ways to shrink them: change the format, reduce the width or both.
- How to Convert a PDF to an ImageTurn PDF pages into JPG images on any device, without installing software. Includes what resolution to pick.
- How to Save a WebP Image as JPGWhy images download as WebP and how to turn them into JPG or PNG quickly, without extra software.
- Best Image Size for WebsitesPractical rules for website images: how wide, how many kilobytes and which format keeps pages fast.
- How to Remove Location Data From PhotosPhotos can carry hidden GPS location and camera details. Here is how to check and how to remove them before sharing.
- Can You Make a JPG Transparent?Why JPG cannot have a transparent background, and which formats can: PNG and WebP. What converting does and does not do.
- What DPI to Use for PDF to ImageWhat 100, 150 and 200 dpi mean for a PDF page converted to JPG, with exact pixel sizes for Letter and A4.
- Why Are My Photos So Big?Why phone photos take several megabytes, what megapixels and format have to do with it, and how to make them smaller.