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CompressImage

compressimage.io Image Tools Online tool

Compress JPEG and PNG images in the browser with CompressImage, which says files stay on the device.

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compressimage.io
CompressImage homepage screenshot

About CompressImage

CompressImage is a web tool for reducing the file size of JPEG and PNG images. According to its homepage, compression runs inside the user's browser, and images are not sent to a server for compression.

The tool accepts multiple files at once and provides a quality setting, optional resizing by maximum width or height, and optional conversion to WebP. Files can be downloaded individually or as a ZIP archive. Compression is lossy, which reduces quality to a degree the homepage describes as almost unnoticeable, and users can raise the quality slider for near-lossless results. The homepage says the app works offline after the first visit. Privacy depends on the browser-based processing described on the homepage, and the source does not describe any other data handling.

Key features

  • Compresses JPEG and PNG images inside the browser
  • Batch compression of multiple images with ZIP download
  • Adjustable quality slider for lossy compression
  • Optional resizing by maximum width or height in pixels
  • Optional conversion of images to WebP format
  • Works offline after the first visit, according to the homepage
Best for: People who need to reduce the file size of JPEG or PNG images and want compression to happen on their own device rather than on a server.
Good for
  • Compression is described as running in the browser, so images are not uploaded for processing
  • The homepage states there are no limits on file count or maximum file size
  • Works offline after the first visit, according to the homepage
Watch out for
  • Compression is lossy, so some image quality is reduced
  • Compression is described for JPEG and PNG files; other formats are described as handled by separate tools
  • Browser-based processing depends on the user's device for speed and resources

CompressImage at a glance

Type
Online tool
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026
image tools

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CompressImage FAQ

Are my images uploaded to a server?
According to the homepage, no. Compression runs directly in the browser using JavaScript and WebAssembly, and images are not sent to servers for compression.
Is there a file size or quantity limit?
The homepage states there are no limits on how many images can be compressed or on maximum file size.
Can I use it offline?
The homepage says yes, after the first visit, because the app is cached.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 13, 2026 · How we rank