Common photo aspect ratios with standard pixel dimensions.

3:2Standard DSLR
6000x40004500x30003000x2000
4:3Micro 4/3, phones
4000x30003200x24002048x1536
16:9Widescreen, video
3840x21601920x10801280x720
1:1Square, Instagram
3000x30002000x20001080x1080
5:4Large format, prints
5000x40003750x30002500x2000
3:1Panoramic
6000x20004500x15003000x1000
2:3Portrait orientation
4000x60003000x45002000x3000
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About Photo Ratio

When you need this task done in seconds, Photo Ratio delivers a clean, focused interface without the friction of a generic tool. Everything happens client-side, which means your files and data never leave your machine. The interface is intentionally minimal so you can focus on the task instead of learning the tool. It pairs naturally with the other utility utilities here when you need to chain a quick workflow.

When you'd reach for Photo Ratio

  • You need to handle a one-off task right before a meeting and don't have time to install anything.

    Anyone working remotely on a borrowed or restricted machine.

    Open the page, get the result, paste it into your doc — under a minute.

  • You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

    Marketers and ops people whose primary tool is metered.

    Stay productive without burning credits.

  • You're cleaning up a folder of files that accumulated over a project and need to standardize them.

    Designers, writers, and developers wrapping up deliverables.

    Drop each file in, copy the output, move on.

  • You're on a public or shared machine and don't want to leave traces of what you're working on.

    Travelers, contractors, anyone working from a friend's computer.

    Nothing is uploaded, nothing persists if you're not signed in.

Frequently asked about Photo Ratio

What browsers does Photo Ratio support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
Is Photo Ratio really free?
Yes — Photo Ratio is free for unlimited personal use, with no account required and no watermark on the output.
Do I need to create an account to use Photo Ratio?
No. Photo Ratio works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
Does Photo Ratio work on mobile?
Yes, Photo Ratio is fully responsive and tested on iOS Safari and Android Chrome.
Are my files uploaded to a server when I use Photo Ratio?
Photo Ratio processes everything in your browser using local APIs. Your files never leave your device.