压缩器 v1.0

拖拽您的图片。

拖拽、浏览、粘贴或选择文件夹。我们将在本地生成预览并在您的浏览器中压缩一切。

Drop images here to start

· ·

  • JPG
  • PNG
  • WebP
  • AVIF
  • GIF
  • SVG
  • HEIC

Settings

Compression

Saved locally

队列

尚无图片

队列为空

将图片拖拽到此页面的任何位置，或使用上方的按钮。

总大小 0 B 已节省 0 B

Compress images for email.

Email services have strict attachment limits — typically 25 MB total per message. Compressing individual images to 200-500 KB lets you attach dozens of photos without hitting limits.

Our compressor includes a preconfigured target-size mode for email (500 KB default). Simply drop your images, set the target, and download files ready to attach to any email client.

Key features

  • Preconfigured 500 KB target for email attachments
  • JPEG quality 80-85 for visually lossless compression
  • PNG lossless mode for screenshots and logos
  • Batch processing for multiple images
  • Strips EXIF metadata

How to email image compressor — step by step

  1. Drop your image: Drag any image format onto the upload area — JPEG, PNG, WebP, or HEIC are all supported.
  2. Set email-friendly size: Enable "Target size" mode and enter 500 KB. The compressor automatically finds the best quality to stay under the limit.
  3. Preview the result: Use the side-by-side comparison slider to verify the image looks good at the compressed size.
  4. Download and attach: Save your compressed image and attach it to your email. No more "file too large" bounce-backs.

Common use cases

Whether you are a photographer, web developer, e-commerce manager, or social media creator, optimizing images before publishing saves bandwidth, improves page load times, and ensures compatibility with platform-specific requirements. Our browser-based compressor works with all major image formats and processes everything locally for your browser with no uploads.

Need to convert images between formats? Try our Image Converter. To resize images for any platform, use the Image Resizer. For rotation and flipping, check the Image Rotator. To crop images with preset aspect ratios, use the Image Cropper.

Email Image Compressor

Frequently Asked Questions

  • What is the best image size for email?

    Aim for images under 500 KB — most email clients display images up to 600-800px wide without scaling. Target-size mode set to 500 KB gives you email-ready images.

  • Does Gmail compress images?

    Yes. Gmail resizes images larger than 2048px wide and strips metadata. Pre-compressing to under 500 KB gives you control before Gmail applies its own processing.

  • What format is best for email attachments?

    JPEG for photographs — smallest file sizes. PNG for screenshots, logos, and images with sharp edges or transparency. WebP is not supported by all email clients.

  • How do I compress an image for email without losing quality?

    Use quality 80-85 for JPEG photos — visually lossless with 80-90% size reduction. For PNG screenshots, use lossless mode to preserve text clarity.

  • Can I batch compress images for email?

    Yes. Drop multiple images at once and the compressor processes them in parallel. Download individual files or everything as a ZIP.

  • What are common email image size limits?

    Gmail/Outlook: 25 MB total per email. Yahoo: 25 MB. Proton Mail: 25 MB (free). Compressing each image to 200-500 KB means you can attach 50+ images per email.