How to Use
- Select images: pick multiple files (
image/*). - Set conversion parameters:
- Max width / height … pixel caps (default
1600×1600, downscale only—no upscaling). - Quality …
0.50–0.95(default0.85).
- Max width / height … pixel caps (default
- Convert: click Convert → results appear; click DL on each card to save.
- Batch save (optional): click ZIP Download to get all converted images in
webp-batch.zip.
Outputs / Results
- WebP images for each input (falls back to JPEG if WebP encoding isn’t supported by the browser).
- Per-item before → after size summary.
- Filenames retain the original base name with
.webp(or.jpgon fallback).
[Completely Free] Utility Tools & Work Support Tools
You can use practical tools like CSV formatting, PDF conversion, and ZIP renaming entirely in your browser, all for free. Each tool page clearly explains “How to use it”, “What the output looks like”, and “Important notes & caveats”, so even first-time users can start without confusion.
Notes / Caveats
- Browser support: If WebP encoding isn’t available, you’ll see a warning and conversion will fallback to JPEG.
- Client-side only: no uploads; everything runs in the browser.
- Transparency: WebP preserves alpha; JPEG does not (transparent areas become opaque).
- Metadata: Re-encoding via Canvas strips EXIF/ICC and other metadata (minor color shifts possible).
- Animated inputs: Only the first frame is exported as a still image.
- Quality vs size: Lower quality reduces file size at the cost of artifacts.
- Memory limits: Very large images or big batches may hit memory limits—process in smaller chunks.
- Aspect ratio: Preserved; images are fitted within the specified caps.
