批量图像调整器

免费的批量图像缩放工具. 按精确尺寸调整多个图像的大小, 百分比, 社交媒体预设, 或纵横比.

免费使用
没有创建帐户
无限

Upload Images

拖放 your images here
或者

预览结果

Results will appear here

裁剪图像

图像和 PDF 文件安全上传, 从未与第三方共享, 下载链接过期后永久删除 (后 24 小时). 然而, 这些网络工具大部分都是基于浏览器的 (客户端), 所以文件不会上传到任何服务器.

About Bulk Image Resizer

批量图像调整器 is a free online web-based utility designed to help users resize many images at once without needing to install software or create an account. You can upload multiple photos and adjust their dimensions by exact size, 百分比, 社交媒体预设, or by maintaining aspect ratio — all directly in your browser for fast, private processing.

主要特点

Here are the main capabilities that make this tool useful:

  • Batch Resizing: Upload many images (bulk) and adjust them all in one go — great for saving time when working with large image sets.
  • Multiple Resize Modes: Resize by exact pixel, percentage scale, 社交媒体预设 (like Facebook or Instagram), or aspect ratio options.
  • Unit Flexibility: Change size in pixels, 英寸, 厘米, or mm depending on your needs.
  • Aspect Ratio Tools: Maintain original proportions or customize the ratio manually.
  • Background Options: For images needing extra canvas space (例如, non-standard aspect ratios), you can choose fill colors or transparent backgrounds.
  • Quality and Format Controls: After resizing, choose output formats including JPG, 巴布亚新几内亚, 网络P, 和AVIF.
  • Preview & 下载: See results before finalizing and download all images together as a ZIP file for convenience.
  • No Login Required: Completely free to use without registration, and uploads are deleted or processed locally (no third-party storage).

如何使用

Here’s a step-by-step walkthrough:

  1. Visit Edit Image PDF than find a tool called 批量图像调整器.
  2. Open the Tool
    Navigate to the tool page in your browser. There’s no installation or login needed.
  3. Upload Images
    Drag and drop one or more image files into the upload area — or click “Browse Files” to choose from your device.
  4. Choose Resize Settings
    • Pick Exact Size to set width and height manually.
    • Use Percentage to scale relative to original dimensions.
    • Select Social Media Presets for platforms like Instagram or YouTube.
    • Maintain or customize Aspect Ratio settings.
      You can also choose measurement units (像素, 英寸, 厘米, mm).
  5. Adjust Quality / Background (optional)
    If needed, set background color or transparency for non-standard sizes, and tweak output quality before processing.
  6. Resize & 下载
    Click the 调整图像大小 button. Once finished, preview results and download all output files individually or as a zipped archive.

Frequently Asked Questions (常问问题)

Here are common questions users might ask with detailed answers:

  • What exactly does Bulk Image Resizer do?
    Bulk Image Resizer lets you upload multiple image files and change their sizes in one batch instead of editing each one individually. It supports different resizing methods such as custom dimensions, percentages, or presets for social platforms.
  • Is it free to use?
    是的! the tool is completely free, with unlimited use and no requirement for creating an account or paying.
  • Do I need an account to use it?
    No account, login, or subscription is ever required! just upload and go.
  • 支持哪些图像格式?
    Common formats like JPG, 巴布亚新几内亚, 网络P, and AVIF are supported for both upload and output.
  • Can I choose exact dimensions?
    是的! you can manually enter width and height values in pixels, 英寸, centimeters, or millimeters for precise control.
  • Will the tool keep the quality of my images?
    The interface allows you to control output quality! it won’t reduce clarity unless you choose to compress or lower quality settings.
  • Can I maintain the original aspect ratio?
    是的! there’s a “Keep aspect ratio” option to avoid distortion when resizing.
  • Is my data secure?
    Images are processed in the browser or automatically deleted after processing. They are not stored on third-party servers long-term, preserving privacy.
  • How large can the images be?
    There’s no hard publicized limit, but very large files may be slower to process due to browser capacity. Splitting into smaller batches may help for huge sets.
  • Can I resize images for specific social media sizes?
    是的! the tool offers presets for popular resolutions used by platforms like Instagram, 叽叽喳喳, and YouTube.
  • Does it support dragging and dropping files?
    是的! you can drag and drop files or browse them directly from your device.
  • Can I download all resized images at once?
    是的! after processing, you can download a ZIP file containing everything in one package.
  • What unit types are supported?
    You can work with pixels (像素), 英寸, centimeters (厘米), or millimeters (mm) when entering size values.
  • Are background colors supported?
    是的! you can pick a background color or transparent fill when resizing images that might need extra canvas space.
  • Can I resize images for print use?
    是的! by selecting units like inches or cm and setting DPI appropriately, you can prepare images sized for print.