File format guides
Plain-language articles on which format to use when, and what changes when you convert.
- How to open iPhone HEIC photos on WindowsWhy iPhone photos are saved as HEIC, how to convert them to JPG, and how to shoot in JPG from the start.
- SVG vs EPS: what's the difference?SVG and EPS are both vector formats. Here is how they differ, where each is used and how to choose.
- Meeting photo size limits when submitting documentsHow to fit photos and document scans under upload limits like '500 KB or less' or '1 MB or less'.
- What to know before merging PDFsCommon problems when merging PDFs, from page order and passwords to file size and scanned documents, and how to fix them.
- Vector vs raster imagesWhy some images blur when enlarged and others don't, which formats belong to each type, and how to choose.
- How to convert SVG text to outlinesHow to turn text into outlines before exporting SVG from Illustrator, Figma and Inkscape.
- Checklist before uploading vector illustrations to stock sitesWhat to check before submitting EPS vectors to stock sites such as Adobe Stock and Shutterstock.
- How to make a favicon and add it to your siteCreating favicon.ico, linking it in HTML, choosing sizes and formats, and what to do when the new icon doesn't show.
- PNG, JPG or WEBP: which to use whenA comparison of the three most common image formats, what each is good at and how to choose.
- How to reduce image file sizeReduce image file size without visible quality loss: resize first, then pick the format, then adjust quality.
- Resolution and size for print filesHow dpi, pixels, millimeters and points relate, and how to calculate the image size you need for print.
- Why transparent backgrounds disappearWhy a PNG's transparent background turns white when converted to JPG, EPS or PDF, and how to keep it.