Is lossy or lossless compression better?

JPEG compression is always lossy (some quality is lost). PNG can be compressed losslessly (same quality, smaller file). For photos, lossy JPEG at 80% quality is usually indistinguishable from the original at half the file size.

What quality setting should I use?

For web images, a quality setting of 75–85 is the sweet spot — visually identical to the original but 40–70% smaller. For hero images or photography, use 85+. For thumbnails, 60–70 is fine.

Can I compress multiple images at once?

Yes. Drag and drop multiple images at once. Each is compressed independently with your chosen settings, and you can download all compressed images as a single ZIP file.

家工具Image Compressor

图像压缩器

Name: 图像压缩器
Rating: 4.8 (120 reviews)
Author: DailyDevTools

本地和私密地压缩图像

上传图片

JPG、PNG 或 WebP。我们在本地压缩它。

Use these tools directly in Chrome

Install the DailyDevTools extension — access all tools from your browser toolbar

Add to Chrome

What is Image Compressor?

Large images are the most common cause of slow web pages. DailyDevTools' Image Compressor reduces the file size of PNG, JPEG, and WebP images directly in your browser using advanced compression algorithms — no files are ever uploaded to a server. Reducing image sizes by 50–80% dramatically improves page load time, Google PageSpeed scores, and Core Web Vitals.

How to use Image Compressor

1Click Upload or drag and drop one or multiple images into the drop zone
2Use the quality slider (1–100) to control the compression level — 75–85 is the sweet spot for most images
3Compare the original and compressed file sizes shown for each image
4Click Download to save the compressed images, or Download All as a ZIP file

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