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: High-quality images should generally be at least 300 PPI for clarity . For web headers, many platforms recommend a width of at least 2500px to ensure the image doesn't pixelate on large monitors .

: The JPG (or JPEG) format is ideal for photographs as it balances high quality with smaller file sizes . For scientific papers or graphics with text, PNG is often preferred because it uses lossless compression that preserves fine lines . image_large_109.jpg

: Be careful when re-saving JPGs, as they use "lossy" compression , meaning they lose a bit of quality every time they are edited and saved . What Makes an Image "Good" for an Article? : High-quality images should generally be at least

: Always ensure you have the rights to the image. You can find free-to-use visuals on sites like Unsplash , Pixabay , and Pexels . Picking Good Header Images - Scholastica Help Desk For scientific papers or graphics with text, PNG