Find a PNG's File Size
Drop a PNG (or any image) to see its exact size in bytes, kilobytes and megabytes. It's measured in your browser, so nothing uploads — a quick check before an email or upload that has a size limit.
Drop images here
Multiple files allowed · one report per image
Bytes vs. KB vs. MB
The report shows the human-friendly size (KB or MB) and the exact byte count, because upload limits are sometimes specified in one and sometimes the other. Note that 1 KB here means 1,024 bytes (the binary convention most operating systems use), so a "500 KB max" field that counts 1,000-byte kilobytes may treat the file as slightly larger.
Too big?
If a PNG is over a limit, Compress re-encodes it smaller, and Resize cuts the pixel dimensions — usually the biggest lever on file size.
FAQ
How do I find out how many KB a PNG is?
Drop it above and click Check size — the KB and MB size plus the exact byte count appear immediately, read in your browser.
Why does my OS show a slightly different size?
Operating systems sometimes report "size on disk" (rounded up to the filesystem block size) rather than the true byte count. This tool shows the actual bytes.
Part of: Put a photo on a web page
Resize first. Compressing before you scale down spends quality on pixels you are about to throw away.
- 1 Resize Scale to the width the layout actually renders at
- 2 Compress Pick the quality, watching the size delta
- 3 PNG to WebP The format that carries alpha and still halves the bytes
- 4 Remove metadata Strip the camera and location data before it ships
- 5 File size Confirm what you are about to upload weighs
Part of: Build an Open Graph preview card
1200×630, and JPG rather than PNG — a few scrapers still refuse PNG for og:image.
- 1 OG image The 1200×630 card, title and all
- 2 Text to PNG Set a headline as its own image if you need more control
- 3 PNG to JPG The format every scraper accepts
- 4 File size Keep it under 300 KB or previews time out