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Convert between image formats
Different platforms expect different formats, and launching Photoshop to convert one file is overkill. This tool converts between JPEG, PNG, WebP, and AVIF using Sharp's best-in-class encoders — mozjpeg, oxipng, libwebp, and libaom. AVIF at quality 60 is typically 40–50% smaller than JPEG at quality 80, with full Chrome, Safari, and Firefox support since 2022 — the best choice for above-the-fold hero images. WebP is the safe modern default at roughly 30% smaller than JPEG. When converting from a transparent PNG to JPEG, you choose the fallback background colour instead of getting unexpected black corners. EXIF metadata including GPS coordinates is stripped as a side effect of re-encoding. Files are deleted from the server within seconds of download. No account, no watermark, no limit on conversions per day.
Sharp handles JPEG via mozjpeg, PNG via oxipng, and WebP and AVIF via their respective reference encoders. Using the right encoder for each format produces meaningfully smaller files than general-purpose converters that use a single codec for everything.
AVIF at quality 60 is typically 40–50% smaller than JPEG at quality 80, with Chrome, Safari, and Firefox support since 2022. For above-the-fold photos where every kilobyte affects Largest Contentful Paint, AVIF is the highest-impact format switch available.
Converting a PNG with an alpha channel to JPEG drops the alpha layer because JPEG has no transparency support. Instead of producing unexpected black corners, you pick the fallback background colour — white, a brand colour, or anything else that matches your page.
JPEG, WebP, and AVIF all have configurable quality from 1 to 100. PNG uses lossless encoding by default. Defaults are set to web best practice for each format, so you can convert without tuning anything unless you have a specific size target.
Re-encoding through Sharp drops camera GPS, serial numbers, and other EXIF metadata automatically. Convert your format and sanitise metadata in a single upload rather than running two separate tools.
Uploads are processed in a temporary directory and deleted within seconds of the download response. No caching, no analytics pipeline, no object storage. Your files do not persist on any server.
Input: Marketing screenshot: 2400×1500 PNG, 3.2 MB
Output: Converted: 2400×1500 WebP, 410 KB, quality 80 — 87% smaller, identical visual quality
Input: Stock JPEG: 1920×1080, 540 KB, quality 85
Output: Converted: 1920×1080 AVIF, 220 KB, quality 60 — 60% smaller, ideal for above-the-fold load speed
Input: Logo PNG with alpha channel: 1000×1000, 240 KB
Output: Converted: 1000×1000 JPEG, 65 KB, quality 90, white background — alpha replaced with chosen fill colour