PNG to JPEG Converter
Convert PNG images to JPEG instantly in your browser — with SEO-ready alt text auto-generated by AI. Free, no upload required, and works on any device. Same as JPG. Standard photo format supported everywhere.
Why convert PNG to JPEG?
Same as JPG. Standard photo format supported everywhere. Converting from PNG to JPEG is one of the fastest wins for Core Web Vitals — smaller files mean faster Largest Contentful Paint and better Google rankings.
100% in-browser conversion
Your PNG files never leave your device. Conversion happens entirely in the browser using the Canvas API, so it's private, instant, and free — no queue, no watermark, no signup for conversion.
SEO alt text included
Every converted image gets an AI-generated alt tag optimized for screen readers and search engines. Copy it straight into your CMS, no rewriting needed.
How to convert PNG to JPEG
- Open the AltPixel converter.
- Drag and drop your PNG files, or click to browse.
- Set the output format to JPEG.
- Wait ~1 second for conversion (runs in your browser).
- Copy the AI-generated alt text and download the JPEG.
Frequently asked questions
Is this PNG to JPEG converter really free?
Yes. Image conversion is 100% free and unlimited — no signup required. Only the optional AI alt-text generation uses credits (5/day free, 2,000/month on Pro).
Will converting PNG to JPEG lose quality?
JPEG is a lossy format. AltPixel uses quality 0.9, which is visually indistinguishable from the original for almost all photos.
Does JPEG help with SEO?
Yes. Google's PageSpeed Insights and Core Web Vitals reward smaller image payloads. Serving JPEG instead of PNG typically drops image weight by 30–70%, directly improving LCP scores and Google rankings.
Can I batch convert multiple PNG files?
Yes — up to 10 files at once. Drop them all on the tool, pick JPEG as the output format, and download each result with its AI alt text.
Is JPEG supported in all browsers?
JPEG is universally supported across all modern browsers.