Compare WebP, AVIF, PNG, and original
Only useful candidates are generated and compared for each image.
007 · IMAGE CONVERT
Web Image Optimizer
Optimize images for websites and blogs with the right format, dimensions and quality in one batch.
LOCALPROCESS IN YOUR BROWSER
WORKSPACEWeb image optimization workspace
Drop your images here or choose files
Compare format, dimensions, and quality candidates for web use.
JPG, PNG, WebP, AVIF · static imagesYour files are processed in your browser and are not uploaded to a server.
Safe limits: up to 10 files · 15 MB each · 50 MB total · 20 million pixels per file and in total · max side 16,384 px
OPTIMIZE SETTINGSGlobal Settings
Add images to see analysis for each file.
HOW TO USE
How to use
- 01
Choose JPG, PNG, WebP, or AVIF images.
- 02
Select a use case such as general web, blog, online store, or portfolio.
- 03
Use Auto Recommended or choose an optimization level.
- 04
Select Optimize for Web.
- 05
Review the selected format, dimensions, file size, and reason.
- 06
Download files individually or as ZIP.
WEB IMAGE OPTIMIZATION GUIDE
Why web optimization is more than compression
The tool compares format, dimensions, and quality together and selects a result only when it meaningfully improves on the original.Resize only when needed
Images that are already suitable or smaller are not enlarged.
Avoid unnecessary re-encoding
The original bytes are retained when candidates are larger or offer too little benefit.
PRACTICAL DETAILS
What to verify in real use
Protect transparency
Transparent images are never automatically changed to JPG.
Correct auto detection
Change the detected photo, graphic, or screenshot type per file when needed.
Explain the choice
Each file shows why a format was selected or why the original was kept.
Local processing and safe limits
Originals and candidates remain in browser memory. Safe limits are 10 files, 15 MB each, 50 MB total, 20 million pixels per file and in total, with a maximum side of 16,384 px.
AVIF is not always best
It can be smaller but slower, and WebP may be the better balance for some images.
Check quality with savings
A smaller file is not better when text or thin lines become unclear.
Metadata behavior
Re-encoded results remove metadata. Original-kept results retain the original bytes and metadata.
Real web performance
Lower transfer size can help, but exact loading-time or ranking gains are not guaranteed.
FAQ
Frequently asked questions
01How is this different from a compressor?+
A compressor keeps format and dimensions. This optimizer evaluates format, dimensions, and quality together.
02Are all images converted to WebP or AVIF?+
No. The format changes only when a generated candidate meaningfully improves on the original.
03Is AVIF always better than WebP?+
No. Results vary by image type, quality, processing time, and browser environment.
04Can transparent PNG files be optimized?+
Yes. PNG, transparent WebP, and AVIF candidates can be compared without automatic JPG conversion.
05Are small images enlarged?+
No. Upscaling is blocked by default.
Your files are processed in your browser and are not uploaded to a server.