When should I use PNG vs JPEG vs WebP?

PNG: logos, screenshots, images with transparency (lossless). JPEG: photos where small file size matters (lossy). WebP: everything on the web — best compression with good quality, supports transparency. Use PNG only when you need transparency or pixel-perfect accuracy.

Can I convert multiple images at once?

Yes — this tool supports batch conversion. Select multiple files at once and they will all be converted to your chosen format. Download them individually or click 'Download all' to grab them all.

Does converting from JPEG to PNG improve quality?

No. Converting from a lossy format (JPEG) to a lossless format (PNG) does not recover lost quality — it just prevents further quality loss. The result is a larger file at the same visual quality JPEG.

Image Format Converter

Convert images between JPEG, PNG, WebP, and AVIF — in your browser

Switching image formats is necessary when you need to optimise for web performance (convert to WebP), maintain transparency (convert to PNG), maximize compatibility (convert to JPEG), or meet a platform's upload requirements. This batch converter handles all conversions client-side — no cloud upload, no account, and no per-file limits. Drop your images, choose the output format, adjust quality, and download.

When to use each image format

JPEG is the right choice for photographs and images with millions of colours where transparency is not needed. It achieves great compression ratios but creates visible artifacts at low quality settings. PNG is lossless and supports full transparency (alpha channel) — use it for logos, icons, screenshots, and graphics with text where pixel-perfect quality matters. WebP is Google's modern format that combines lossy and lossless modes; it produces files 25–35% smaller than JPEG or PNG at equivalent quality and is supported by all modern browsers. AVIF is the newest format, offering even better compression than WebP, but is not yet supported by all tools and older browsers.

Converting PNG to JPEG — what you lose

When you convert a PNG to JPEG, you lose transparency (alpha channel). Transparent areas in the original PNG become white (or the background colour you specify) in the JPEG output. JPEG also introduces lossy compression — fine text, sharp edges, and solid-colour areas may show slight artifacts. For web images where transparency is not needed, PNG-to-JPEG conversion is usually safe and produces significantly smaller files.

Converting to WebP for web performance

Google PageSpeed Insights and Core Web Vitals analysis often flag "Serve images in next-gen formats" as an optimization opportunity. Converting your existing JPEG and PNG images to WebP can reduce image payload by 30–50% without perceptible quality differences, improving page load times and Largest Contentful Paint (LCP) scores. Most modern web frameworks (Next.js, Nuxt, SvelteKit) serve WebP automatically; for static sites, converting images upfront is the simplest approach.

Batch conversion — process multiple files at once

This tool lets you upload multiple images simultaneously and convert them all to the same target format with a single quality setting. The images are processed in parallel in your browser and available for individual download or as a ZIP archive. Batch conversion is useful for processing product photo sets, converting an entire icon library, or migrating a website's image assets to a modern format.