Image Format Converter
Convert JPG, PNG, and WebP images in your browser with quality controls and transparent PNG/WebP handling.
工具代码会在浏览器中处理所选文件和输入内容，不会将其提交给 TOOLGRID 的处理接口。 TOOLGRID 只衡量工具使用情况，不记录你输入的内容。
- 不上传工具输入至 TOOLGRID
- 不登录
- 复制前先检查
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这个工具能做什么
Browser-local image format converter for PNG, JPG/JPEG, and WebP. Batch select images, choose output format and quality, preview, and download.
Image Format Converter turns JPG/JPEG, PNG, and WebP files into the format you need using browser Canvas. Pick images, choose PNG, JPEG, or WebP output, then download the converted files from your device.
Use it when a CMS, email tool, documentation site, or design handoff requires a specific image format. PNG keeps transparency, JPEG creates smaller photo-friendly files with a chosen background color, and WebP is usually best for modern web delivery.
Files are decoded in the current browser tab, re-encoded in memory, and downloaded locally. Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint. Browser-local processing avoids a TOOLGRID upload path, but it is not a blanket security guarantee.
For smaller final files, use Image Optimizer. For metadata cleanup before sharing a photo, use EXIF Cleaner.
如果还需要校验、转换或复用结果，可以继续打开相近的浏览器本地工具。
如何使用
01复制前快速检查
02先确认输入格式符合你的预期。
在把结果用于文档、链接、配置或消息前快速扫一眼。
只复制你真正需要的输出。
使用场景
Turn WebP assets into PNG or JPEG when a CMS, email editor, or document workflow does not accept WebP uploads.
Convert supported images to PNG when transparency must be preserved for icons, interface screenshots, overlays, or documentation.
Convert PNG or JPEG source images to WebP before publishing, then use Image Optimizer if you need additional resizing.
使用技巧
- 01JPEG to PNG will not restore quality
Converting a lossy JPEG to PNG preserves the current pixels, but it cannot recover detail removed by the original JPEG compression.
- 02Set a background before JPEG export
JPEG cannot store transparency. Transparent PNG or WebP pixels are flattened onto the selected background color before export.
- 03Treat animated images as still frames
Browser Canvas export captures a still frame. It is useful for static conversion, not for preserving animated WebP, GIF, AVIF, or APNG sequences.
常见问题
03Are my images uploaded?
Conversion happens in the current browser tab with Canvas. Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint.
Which formats can I export?
PNG, JPEG, and WebP. The tool verifies that the browser actually encoded the requested format instead of silently falling back.
Can I convert AVIF?
Some browsers can decode AVIF input through their image stack. AVIF output is not promised in this version.
What happens to EXIF metadata?
Canvas re-encoding usually removes metadata. Use EXIF Cleaner when metadata inspection and removal is your main goal.