PNG INSPECTOR
See through every PNG detail.
Parse the PNG structure for dimensions, bit depth, color type and text metadata (tEXt/iTXt). Local only.
Drop or choose a PNG
Reads structure only, never modifies the file
结果会显示在这里
Everything runs locally in your browser
What can this tool do?
It reads the PNG binary structure in your browser, showing IHDR width/height, bit depth, color type and interlace, plus common text/resolution/color-space metadata — no software needed.
示例与注意事项Example & notes
一个例子A worked example
上传一张 PNG：能看到尺寸、位深、颜色类型与是否交错，也能判断有没有透明通道。Upload a PNG to see dimensions, bit depth, colour type and interlacing, plus whether it carries an alpha channel.
注意事项Things to watch
- 8 位与 16 位差别很大，16 位图文件几乎翻倍，网页用 8 位足够。8-bit versus 16-bit matters: 16-bit nearly doubles file size, and 8-bit is plenty for the web.
- 调色板（索引色）模式体积最小，但颜色数受限于 256。Palette mode compresses best but caps colours at 256.
- 体积异常大通常是没压缩或塞了大量元数据。Oversized files usually mean no compression or heavy metadata.
相关问答More Q&A
会修改图片吗？Does it modify the file?
只读解析，不会改动或重新编码你的图片。It only reads the file — no modification or re-encoding.
支持动图 PNG（APNG）吗？Does it support APNG?
能识别动图标记并给出简要帧信息，逐帧编辑请用其他工具。It detects the animation flag and reports basic frame info; use another tool for frame editing.