Free Image Optimiser
Convert JPG, PNG and iPhone HEIC photos to compressed WebP before you upload them to your website. No sign-up, no storage - everything happens on your device.
- HEIC from iPhone - converts in your browser
- Queue a whole batch, download one zip
- No account, no upload, unlimited free
Why optimise images before uploading?
Oversized images are the number one cause of slow websites. WebP files are typically 25-80% smaller than the same JPG or PNG at equivalent quality, which means faster page loads, better Core Web Vitals, and stronger Google rankings. Run your images through this free image compressor before adding them to your site builder, WordPress media library, or online shop.
Works with iPhone HEIC photos
iPhones save photos as HEIC by default - great for storage on the phone, useless for most website builders that only accept JPG or PNG. Drop your HEIC files here and they convert to compressed WebP in the browser, same as every other format. No need to re-export from the Photos app first.
Is this really private?
Yes. The conversion runs entirely in your browser using your device's own processor - the same way our Mac app works. HEIC decoding uses a local WebAssembly library (nothing leaves your machine). Your images are never uploaded to a server, never stored, and never seen by us. Close the tab and they're gone. We only serve the static page - your photos never hit Vercel or any API.
Free image compressor FAQs
WebP converter, HEIC to WebP, batch compress, and privacy questions.
Need a hand with your website?
Optimised images are only half the job. Our other business, Dab Hand Marketing, builds the site around them. Send over your brief and any files and we'll take a look and see what we can do.