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Format Conversion

Serve WebP to every browser that supports it. Automatically.

Modern image formats load faster and use less bandwidth. Spronta detects what the browser supports and serves the best format automatically — with no code changes needed on your end.

Try the WebP converter

What's included

Automatic WebP delivery based on browser support
Explicit format control: ?f=webp, ?f=jpeg, ?f=png
Works on bare image URLs — no transform params required
Falls back to original format for unsupported browsers
Correct cache behaviour for format-negotiated responses

Format negotiation

// Automatic — Spronta detects browser support
// Modern browsers → serves WebP
// Older browsers → serves original

// Or force a specific format
cdn.spronta.com/{id}?f=webp
cdn.spronta.com/{id}?f=jpeg&q=85
cdn.spronta.com/{id}?f=png