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Responsive Srcset Generator

Generate1–50 unique sorted positive integer width candidates and use the largest as fallback.

responsive-srcset-generatorLOCAL WORKSPACE

Enabling local controls…

Local processing inputs

Local Worker: 10s startup, 1s processing. 32KiB per field, 1MiB complete result. Editing or clearing cancels work and stale output. Generated HTML/CSS is not mounted; remote image preview requires a separate action.

Preview and code

Edit fields and build a preview; complete code can be copied or downloaded.

Model and scope

Generate1–50 unique sorted positive integer width candidates and use the largest as fallback. Source URL templates are not fetched or resized; create those files separately. sizes is escaped but not fully evaluated. Omit invalid height=auto and use CSS height:auto. Preview shows the candidate plan.

WHATWG responsive images ↗ToolHub source controls ↗

How to use this tool

Edit the bounded fields, process locally, inspect the native preview, then copy or download complete code. Editing clears stale output.

When not to use it

Generate1–50 unique sorted positive integer width candidates and use the largest as fallback. Source URL templates are not fetched or resized; create those files separately. sizes is escaped but not fully evaluated. Omit invalid height=auto and use CSS height:auto. Preview shows the candidate plan.