Common image dimensions
Always check the destination’s latest help page before a critical upload because platforms can change requirements. These dimensions are practical working sizes for common use cases and match the presets available inside SizeFix.
1500 × 500 px · 3:1 · Resize for X header
400 × 400 px · 1:1 · Resize X profile picture
1080 × 1080 px · 1:1 · Resize Instagram post
1080 × 1920 px · 9:16 · Use image resizer
3840 × 2160 px high-resolution preset · 16:9 · Resize YouTube thumbnail
800 × 800 px · 1:1 · Use square profile preset
600 × 600 px · 1:1 · Resize job application photo
300 × 300 px · 1:1 · Resize to 300 × 300
512 × 512 px · 1:1 · Resize to 512 × 512
600 × 600 px · 1:1 · Resize to 600 × 600
Pixel dimensions and file size are different requirements
A 600 × 600 image can still be too large in kilobytes. If a portal gives both a pixel requirement and a maximum KB limit, enter both in SizeFix. The tool validates the requirements you actually enter instead of treating dimensions and file size as the same thing.
Which format should you use?
JPG is usually the best general-purpose format for photographs and smaller upload sizes. PNG is useful for transparency, screenshots and graphics. WebP is efficient for modern websites. SizeFix includes PNG to JPG, JPG to PNG, JPG to WebP and PNG to WebP converters.
How to use this cheat sheet
Find the destination or closest use case, open the linked tool, upload the original image, then review the generated dimensions and file size before saving. Keep the original separately so you can create different versions later without repeatedly recompressing an already processed image.