Image Aspect Ratio Padder & Square Fitter
Pad photos to exact 1:1, 4:5, or 16:9 ratios without cropping or stretching.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use Image Aspect Ratio Padder & Square Fitter
Load your photo into the canvas workspace.
Choose 1:1, 4:5, 16:9, 9:16, 4:3, or 3:2.
Pick a custom padding color or enable transparent PNG padding.
Export the padded graphic.
Frequently Asked Questions
Does it maintain image resolution?
Yes, the original image pixels are preserved without downsampling.
Can I export transparent padding?
Yes, check the Transparent Padding option to export a transparent PNG.
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