PNG to JPG
Re-encode PNG images as compressed JPG. Transparency becomes white.
- Browser-only
- No upload
- No login
- No watermark
- Clear instantly
- Open-source engines
Drop files here
or use the buttons below · .png
Your file stays on this device · conversion runs locally in your browser
Deep dive
What is PNG to JPG?
PNG to JPG re-encodes PNG images as JPEG. JPGs are usually much smaller than PNGs, so this is the fastest way to shrink a folder of screenshots or design exports for email, upload, or web use.
FormatSwitch performs the conversion in your browser. Transparent pixels become white — a standard behaviour because JPG does not support transparency.
When to use it
- Reduce the size of screenshots for a bug report or email.
- Prepare PNG design exports for platforms that only accept JPG.
- Shrink a batch of PNG photos with minimal quality loss.
How to use it safely without uploading
Drop your PNGs and press Convert. The output JPGs download locally, either one at a time or as a ZIP.
Browser-based vs server-based conversion
Most online converters upload your files to their servers, process them there, and then let you download the result. That means your file exists on someone else's computer, often in logs and backups, sometimes indefinitely. FormatSwitch is different: every conversion runs on your device using WebAssembly and the browser's built-in Canvas and PDF engines. Your file never leaves your computer, so there is nothing to leak, nothing to subpoena, and nothing to trust us on — the code that does the work is running right in your tab.
FAQ
PNG to JPG — questions people ask
- Are my PNGs uploaded?
- No. Files are processed entirely in your browser using WebAssembly and the Canvas API. Nothing is uploaded to a server, and no copy is kept once you close or refresh the tab.
- What happens to transparent pixels?
- They become white in the JPG, because JPG cannot store transparency.
- Is there a watermark?
- Never. FormatSwitch adds no watermark, logo, or quality cap to your output — the file you download is only what your browser produced.
- Does it work on mobile?
- Yes. Every tool runs on modern iOS Safari and Android Chrome. Very large files may be slower on mobile because of tighter memory limits.
- Are files stored anywhere?
- No. Files live only in your browser's memory (JavaScript heap). They disappear when you clear the queue, refresh, or close the tab. There is no server, no database, no log.
- Can I convert dozens of PNGs at once?
- Yes. Drop a folder or select multiple files and each one is converted in parallel, respecting your device's memory.