UUUP Tools

Image Tools

Image Format Converter — WebP, JPEG, PNG, AVIF

Convert images to WebP, JPEG, PNG, or AVIF in your browser. Adjust lossy quality and compare file size—useful for site assets and front-end format migrations.

Quick switch→Image to Base64
ImageFormatWebP
Quick switch:Image to Base64Local Image Resizer

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Use cases

  • Convert PNG to WebP to cut CDN traffic
  • Normalize assets to JPEG or PNG
  • Try AVIF in browsers that can encode it

How to use

  1. Upload the source image
  2. Choose target format and quality
  3. Compare sizes, then download the result

Example input and output

Original

5MB PNG

Result

WebP quality 80 → about 254 KB

FAQ

Why can’t I export AVIF?

It depends on Canvas support for image/avif encoding. Older engines may not export AVIF.

Does the quality slider affect PNG?

It mainly applies to lossy formats such as JPEG, WebP, and AVIF. PNG export is primarily lossless.

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Local Image Resizer

Local Image Resizer — Browser Resize and Compress

Available

Resize and re-encode images locally with Canvas. Set max dimensions, quality, and output format, then download the result. Original files stay in the browser and are not uploaded.

Image Compress Resize
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Image to Base64

Image to Base64 — Encode as a Data URL

Available

Convert a local image into a Base64 Data URL in your browser—no upload. Handy for embedding small icons in HTML/CSS, debugging CSS backgrounds, and documenting API image samples.

Image Base64 Data URL
Open tool