Exam warriors
Photo + signature exactly how the form wants it. No more 'file size invalid'.
Squeeze PNG screenshots and graphics losslessly. Need it much smaller? One tap switches to WebP.
Shrink the file, keep the vibe.
Under 20 KB, 50 KB, 100 KB. Exact.
HEIC, WebP, PNG ↔ JPG.
Square, 4:5, 16:9, passport.
10 photos at a time, one ZIP.
US 2×2, UK, Schengen, India.
Clean, crop, under the KB limit.
Free, full size, nothing uploaded.
Photo + signature exactly how the form wants it. No more 'file size invalid'.
Every platform size in one tap. HEIC from your iPhone? Sorted.
Square product shots, white backgrounds, 10 at a time.
PNG is a lossless format. It must store every pixel exactly, which is perfect for logos, icons, screenshots and anything with sharp text, but heavy for photos. A full-screen screenshot can be 1–3 MB; a phone photo saved as PNG can be 10 MB or more.
| Option | Keeps transparency | Typical saving | Best for |
|---|---|---|---|
| PNG, optimised (this recipe) | Yes | 10–40% | Files that must stay PNG |
| WebP | Yes | 70–90% | Websites, apps, sharing |
| JPG | No (white) | 80–95% for photos | Photos, upload forms |
When the studio compresses a PNG it notes that PNG only shrinks a little and suggests WebP, because that’s usually what you actually want.
A PNG is a grid of pixels compressed with a method similar to a ZIP file. Optimising tries many ways of filtering and packing that grid and keeps the smallest one. Nothing about the picture changes: every pixel and every transparent edge stays exactly the same. That’s why the saving is modest but completely safe for logos, icons and images you’ll edit again.
WebP can store the same sharp-edged graphic far more efficiently, and it keeps transparency, so for websites and apps it’s normally the smallest option without visible change. Every modern browser supports it. The only reason to stay with PNG is a site or program that specifically asks for it, such as some print services, older design tools or upload forms. In that case, this recipe gives you the smallest PNG we can make.
Screenshots often contain personal details. The compression runs on your own device, so the image is never sent anywhere.
PNG is lossless: it must keep every pixel exactly, so compression can only find smarter ways to store the same data. Savings of 10–40% are typical.
Save as WebP. It keeps transparency and sharp edges and is often 70–90% smaller. Or, for photos, save as JPG.
No. Lossless PNG compression keeps transparency, and so does WebP.
Use KB size mode. PNG has no quality setting, so to hit a KB target we switch to WebP for transparent images or JPG for photos and tell you.