Converting photos for a blog
Before
JPG photos totaling 4.8 MB on a single page
After
WebP version, 2.6 MB at the same visual quality
Cut the page weight almost in half. Load time dropped noticeably.
All Tools
Image Format Converter – JPG, PNG, WebP, AVIF
I built this when I realized my website was loading slow because all my images were JPG. Converting to WebP cut the file sizes by nearly half at the same visual quality. Pick your source, pick the output format, done.
100% free, no signup
Upload a file
Drag & drop your file here, or click to browse
Your files are processed in your browser and never uploaded to any server.
A note from me
For websites, WebP is almost always the right answer now — 25-35% smaller than JPG at the same visual quality, and supported by every modern browser. AVIF is even smaller but has slower encode times and less support on older devices. My rule: WebP for most web images, AVIF only if you're optimizing for speed and know your audience has modern devices.
— Mirza Noman Baig
How to use this tool
- 1Upload an image.
- 2Pick the output format — JPG, PNG, WebP, or AVIF.
- 3Adjust quality if you want.
- 4Download the converted file.
Real results from testing
These are actual measurements from using this tool, not estimates.
Converting a logo to PNG
Before
JPG logo with a white background
After
PNG with transparency
Now the logo works on any background color.
Optimizing for a modern web app
Before
PNG icons, larger than needed
After
AVIF versions, about 60% smaller
Confirmed target audience used modern browsers. Safe to use AVIF everywhere.
Image Format Converter features
Four formats
JPG, PNG, WebP, and AVIF in any direction.
Quality control
Adjust the balance between file size and visual quality.
Batch conversion
Convert multiple images in one session.
Runs locally
No uploads, no accounts. Works on any modern browser.
Frequently asked questions
Which format should I convert to?+
For photos and web use: WebP. For transparency: PNG. For maximum compatibility: JPG. For modern browsers where file size matters: AVIF.
Is my image uploaded?+
No. Everything runs in your browser. Your images never leave your device.
Does converting reduce quality?+
It depends on the target format and quality setting. JPG and WebP are lossy at lower quality settings. PNG is lossless. AVIF is lossy but efficient.
Does the original file change?+
No. The converted file is new. Your original stays untouched.
Can I convert multiple images at once?+
Yes. Upload multiple images and convert them in a batch.