Free Tool
Format Converter
Convert between PNG, WebP, AVIF, and JPG. Quality control for lossy formats. Before/after file size comparison. All processing is local — no upload required.
Drag to compare
Convert between PNG, WebP, AVIF, and JPG with quality control — all local, no upload
Drop an image here
or click to browse — JPG, PNG, WebP, AVIF, HEIC
Format guide
PNG — lossless, supports transparency, largest file size. Best for screenshots, logos, and images with text.
WebP — lossy/lossless, supports transparency, 20–40% smaller than PNG at comparable quality. Best for web images.
AVIF — modern format, supports transparency, 30–60% smaller than PNG. Excellent quality. Best for modern browsers.
JPG — no transparency, universally compatible. Best for photographs without transparent backgrounds.
How it works
- Drop a PNG, JPG, WebP, AVIF, or HEIC image
- Select the target format — PNG, JPEG, WebP, or AVIF — and adjust quality if applicable
- Download the converted image — all processing runs locally, nothing is uploaded
Frequently asked questions
Does converting to JPEG lose quality?
JPEG is lossy — some quality is discarded. The quality slider (default 90) controls the trade-off. Values above 85 are typically indistinguishable from the original.
Can I convert HEIC iPhone photos to JPEG?
Yes. Drop a HEIC file and select JPEG output. The tool decodes HEIC natively in supported browsers (Chrome 117+, Safari 17+).
Why would I convert to AVIF instead of WebP?
AVIF typically achieves 20–35% smaller file sizes than WebP at equivalent visual quality. Browser support is now near-universal (Chrome 85+, Safari 16+, Firefox 93+).
Related tools
Why it's different
PNG, WebP, AVIF, and JPG conversion with quality control — entirely in your browser. File size comparison before downloading. No upload, no server.
100% Private
Everything runs on your device using in-browser AI. Nothing is transmitted to any server — not the file, not metadata, not filenames.
True Alpha Channel
We export straight (non-premultiplied) alpha so transparent PNGs open with a real checkerboard in Photoshop and Figma — no black halos.
Free Forever
No paywall, no watermark, no premium tier. The full-quality AI is free, supported by non-intrusive ads.
Works Offline
Once loaded, the app and AI models cache locally. Process files without an internet connection. Installable as a desktop or mobile app.
Ready to try it?
Free, private, no signup.
Convert an image →