批量转JPG
把多张图片统一转换为 JPG 并打包。
关于「批量转JPG」
它属于「格式转换」分类：批量图片格式互转，解码与编码都在浏览器完成。
- 一次性把多张图片统一转成体积更小的 JPG，处理完成后可逐张下载或打包 ZIP。
- JPG 不支持透明通道，原图中的透明部分会替换为白色背景。
- 所有解码与编码都在浏览器本地完成，不会上传图片。
完全免费、无需注册；所有处理都在浏览器本地完成，文件不会上传到任何服务器。
相关关键词：批量转JPG、格式转换、jpg、批量、在线工具、免费
如何使用「批量转JPG」
- 打开工具：打开「批量转JPG」页面，无需注册、无需安装任何软件。
- 准备输入：JPG 为有损压缩且不支持透明，透明区域会填充白色。
- 填入内容：把内容粘贴进输入框，或把文件拖入页面；也可以点击「示例」先填入样例数据试一下。
- 设置选项并处理：按需调整页面上的选项，然后点击处理 / 转换 / 生成按钮。
- 获取结果：处理完全在浏览器本地完成，结果可直接复制或下载，文件不会上传到任何服务器。
常见问题
- 为什么有的图转完变大？
- 如果原图是 PNG 且颜色简单，JPG 反而可能更大；质量调到 70~85 通常最均衡。
- 透明背景去哪了？
- JPG 本身不含透明度信息，工具会把透明像素填成白色，以符合大多数使用场景。
- 质量能调吗？
- 导出前可设置质量（建议 70~85）；数值越高画质越好但体积越大。
Batch to JPG (English)
Convert multiple images to JPG and pack them.
Belongs to “Converters”: Batch image format conversion, decoding and encoding in the browser.
- Batch-converts images to smaller JPGs; download one by one or as a ZIP.
- JPG has no alpha channel; transparent parts become a white background.
- All decode/encode happens locally; images are never uploaded.
Free, no sign-up; everything runs locally in your browser and files are never uploaded.
Keywords: Batch to JPG, Converters, jpg, batch, online tool, free
How to use it
- Open the tool：Open the “Batch to JPG” page — no sign-up and nothing to install.
- Prepare the input：JPG is lossy and has no transparency; transparent areas become white.
- Provide the input：Paste your content into the input box or drop a file onto the page; you can also click “Sample” to try example data first.
- Adjust options and run：Adjust the options if needed, then click the process / convert / generate button.
- Get the result：Everything runs locally in your browser; copy or download the result — your files are never uploaded.
FAQ
- Why did some images grow?
- If the source is a simple PNG, JPG may even grow; quality 70–85 is usually the sweet spot.
- Where did the transparent background go?
- JPG has no transparency; the tool fills transparent pixels white for most use cases.
- Can I adjust quality?
- You can set quality before exporting (70–85 recommended); higher means better quality but larger files.
More tools in Converters
- Batch to PNG — Convert to lossless PNG, keep transparency.
- Batch to WebP — Convert to smaller WebP files.
- Batch to BMP — Export uncompressed BMP bitmaps.
- Batch to GIF — Convert static images to single-frame GIF.
- Batch to AVIF — Convert to high-compression AVIF (browser-dependent).
- HEIC Converter — Convert iPhone HEIC photos to JPG/PNG.
- SVG to PNG — Rasterize SVG to PNG at a given scale.
- Image to Base64 — Generate DataURL, CSS and img-tag code.
- Extract Audio from Video — Separate the audio track from a video and export WAV.
- Audio Converter — Decode and re-encode to WAV, change sample rate.