Image size guides for pixels, ratios, formats, and requirements
Use a reviewed guide when the job needs more than a preset: compare aspect ratios, choose a file format, protect a social safe area, or calculate print and identity-photo dimensions.
Choose the format that fits the image and delivery channel.
A reviewed comparison for quality, file size, transparency, and compatibility before you export.
Keep critical Story content clear of interface overlays.
Use the reviewed safe-area guidance before placing text, logos, and calls to action in a vertical frame.
Prepare identity photos and convert print measurements with confidence.
Passport, visa, and measurement references pair plain-language guidance with the formulas needed to set a precise pixel size.
Passport photo requirements (background & rules)
Passport photo requirements: background, lighting, head size, and size conversions. No upload.
Read guide →Resize passport photo (photo size guide)
Passport photo size guide, DPI tips, and resize online with local processing (no upload).
Read guide →Resize visa / ID photo (size guide)
Visa/ID photo size guide with DPI tips and online resizing (no upload).
Read guide →Resize image in cm or inches (convert to pixels)
Calculate pixel dimensions from cm, mm, or inches at your chosen PPI, then open those dimensions in the local resizer. Includes rounding and print setup limits.
Read guide →PX to CM converter (pixels to centimeters)
Calculate print width and height from pixels at a chosen PPI, or convert cm, mm, and inches to pixels. Includes formulas, worked examples, and local resizing.
Read guide →Know the target size already?
Browse the preset library or open the resizer directly when you do not need a reference guide.