Images are the heaviest part of any website, and phone photos (HEIC, huge RAW-ish JPEGs) are the heaviest images of all. The best free image tools online fix both — compress, convert, and optimize without installing anything, uploading to a stranger, or paying a subscription.
| Task | Free tool | Why it wins |
|---|---|---|
| Compress images | Image Compressor | Shrink JPEG/PNG/WebP in-browser — no upload, no quality disaster |
| HEIC to JPG | HEIC to JPG | iPhone photos that actually upload anywhere |
| Image to PNG | Image to PNG | Any format → transparent-ready PNG |
| Image to WebP | Image to WebP | Web-optimized images, dramatically smaller |
| PSD to PNG | PSD to PNG | Flatten Photoshop files without opening Photoshop |
These tools process everything in your browser. Your photos never touch a server, never enter a database, and never feed an AI training set. That matters for product shots, client work, and anything with sensitive content.
Are these image tools really free? Yes — compress and convert unlimited images with no account, no watermark, and no size caps.
Are my photos uploaded anywhere? No. All processing happens locally in your browser, so your images never leave your device.
What's the best format for the web? WebP offers the best size-to-quality ratio for most images; use PNG for logos and graphics with transparency.
How do I convert HEIC photos from my iPhone? Use the HEIC to JPG tool — drag in your .heic files and get standard .jpg files ready for any upload form.