Compress image online

Reduce the size of an image for free without losing quality online

Compress image

Compress JPEG image

Compress your JPEG and JPG images now for free and easily online without any loss of visual quality.

Compress JPEG

Compress PNG image

Online PNG image compression, PNG-8 or PNG-24 format, quickly and easily reduce the size of your PNG files.

Compress PNG

GIF Compression / Animated GIF

Use our online tool to compress your GIF images as well as your animated GIFs quickly in just a few clicks.

Compress GIF

Compress WEBP image

Speed up the loading of WEBP images and significantly boost your website's speed by compressing your WEBP files.

Compress WEBP

Compress PDF files

Simply reduce the size of all your PDF files using our online PDF (Portable Document Format) compressor for free.

Compress PDF

SVG Image Compression

Optimize your SVG images while preserving quality by removing all unnecessary information from your SVG files.

Compress SVG

Compress PSD images

Smart compression of PSD (Photoshop Document) files to maintain good image quality, resulting in lighter PSDs.

Compress PSD

Compress AVIF images

Optimal solution for AVIF compression, our compressor is 100% free and allows you to reduce the size of AVIF files in a few clicks.

Compress AVIF

ICO file compression

Minimize the loading times of ICO files for your websites and blogs by compressing your icons or favicons!

Compress ICO

HEIF/HEIC compression

Quality compression for HEIC and HEIF images for free thanks to our online compressor at compress-image.net.

Compress HEIC

Compress RAW photos

High-quality compression for RAW photos with various formats supported: .arw, .dng, .cr2, .nef, .rw2, etc.

Compress RAW

EPS image compression

Optimize EPS vector files with fast and smart compression using a 100% free tool available to everyone.

Compress EPS

Compress BMP images

Our online compressor allows for simple and quick compression of images in AI formats.

Compress BMP

Compress AI image

Easily reduce the size of all your BMP images for free using our online BMP image compressor.

Compress AI

TIFF/TIF compression

High-quality compression for images in TIFF or TIF format, all without any loss of visual quality.

Compress TIFF

Info on Online Image Compression

Welcome to our website dedicated to online image compression, useful for web developers, graphic designers, photographers, or just the average user to help you optimize the management of your digital files without any necessary technical skills!
Photos and images can be demanding in terms of storage and bandwidth. There are efficient compression techniques to lighten your files without compromising on visual quality: Our tool allows you to easily reduce the size of your images and files without deteriorating their quality.
You can thus choose the compression rate and fine-tune the weight/quality ratio of the image, or directly select predefined rates to quickly compress your images with ease. In summary, we offer a compressor:

  • No registration required
  • 100% free
  • Easy to use
  • No watermark or branding on photos
  • No restrictions
  • 100% secure

What are the different types of images?

Digital images fall into two main categories: vector images and raster images:

  • Raster Images: These are images composed of small squares called pixels, and these tens, hundreds, thousands or even millions of pixels put together form a complete image (for example, an image containing 2000 pixels in width and length, 2000 x 2000 pixels, contains 4 million pixels).
    The most well-known formats for raster images are:
    • JPEG/JPG (Joint Photographic Experts Group): Very common, used for digital photos allowing high compression while maintaining good image quality.
    • PNG (Portable Network Graphics): Also widespread, especially on the web, as this image format supports transparency.
    • GIF (Graphics Interchange Format): Image supporting animations and transparency commonly used on the web.
    • TIFF/TIF (Tagged Image File Format): High-quality image that cannot be compressed, making it unsuitable for web use.
    • BMP (Bitmap): Developed by Microsoft, a standard format for high-quality images, non-compressible; it is not suitable for web use due to its excessive size.
    • WEBP (Web Picture): Developed by Google, a format optimized for the web, good compression with acceptable image quality; unfortunately, not all browsers yet support this format.
    • PSD (PhotoShop Document): Proprietary image format intended for use with Adobe Photoshop.
    • HEIF/HEIC (High Efficiency Image File): This high-efficiency image format was developed by the MPEG Group and adopted by Apple for iOS devices to store images and image sequences.
    • RAW: A general format representing all the specific formats for each camera manufacturer.
  • Vector Images: They are constructed with mathematical formulas that create lines and shapes: so they can be enlarged as much as you wish while retaining the same quality!
    They will be used for logos, images that need to be resized often, or even for the web such as SVG images: some images without real semantic and SEO importance don't necessarily need to be indexed by search engines, like icons. Therefore, vector SVG images can be used to help reduce page load times!
    The most well-known formats for vector images are:
    • SVG (Scalable Vector Graphics): Designed specifically for the web, this format allows displaying images, graphics, or illustrations.
    • AI (Adobe Illustrator Artwork): Proprietary vector image format developed by Adobe for Illustrator.
    • EPS (Encapsulated PostScript): Print file format based on Postscript, mainly used for vector images, although it can also contain bitmaps!

How does image compression work?

Image compression is a technique that allows for the reduction of the size of images/photos using various compression methods depending on the format.

  • Lossless compression method: used for formats such as PNG, GIF, BMP, and TIFF, this method means that there will be no loss of information.
    It works by rearranging and encoding the image data to reduce the file size without losing any information. How does it work? In simple terms, if a value/color repeats consecutively several times, instead of saving each occurrence individually, the format saves the value and indicates how many times it appears consecutively (for instance, 20 consecutive red pixels will be saved as Red20 instead of RedRedRedRed... 20 times). There will be other techniques (reference tables, predictions based on the values of neighboring pixels, etc.) that serve the same purpose, which is to rearrange the data to end up with a lighter file without losing any information.
  • Lossy compression method: meaning that some image information is deleted!
    The image is analyzed, and areas with less detail or redundant or less significant data in the image are identified, and it's these areas that are compressed more than the areas with a lot of detail. So, even though we lose some details, we still retain a sufficiently good image quality that is indistinguishable to the human eye, all while saving storage space.
    However, be cautious, if the compression is too much, the photo can lose its quality. It's therefore a balance between saving space and maintaining a good image quality: with our online compressor, you can optimize your image by choosing the compression rate.

Convert an image online

In addition to our online compression service, we also offer an image and file conversion service; You just need to select an output format from the dropdown list "Output Extension" before uploading your files. Here are some of the file conversions offered:

Many formats are supported, on compress-image.net you can convert your files into: "jpg/jpeg", "png", "gif", "webp", "ico", "bmp", "tiff/tif", "avif", "heif/heic", "psd", "eps", "ai", "pdf", "svg"

Is image compression safe?

Our online image compression tool is entirely safe and also 100% free. Our servers are secure, automated, and all your images and photos remain private: no one can see the files you upload or compress.
All your files are automatically and permanently deleted from our servers either when you press the « Delete All » button or if you individually delete the images by clicking on the cross icon present on each thumbnail. If you don't delete your images, they will be automatically removed from our servers after 2 hours.