Is this image compressor free?
Yes. You can use the KitUche image compressor online for free without creating an account.
Free Online Image Compressor
Compress and resize JPG, PNG, WebP, AVIF and HEIC images online. Reduce image file sizes for websites, social media, email and everyday use. Process multiple images directly in your browser.
Upload your images
Select one image or multiple JPG, PNG, WebP, AVIF, HEIC or HEIF files.
Drag and drop your images here
JPG, JPEG, PNG, WebP, AVIF, HEIC and HEIF are supported.
0 images selected
Compress Images Online for Free
Looking for a free image compressor online? KitUche helps you reduce image size without installing additional software. Compress JPG, PNG, WebP, AVIF and HEIC images, resize photos and download the results individually or together in a ZIP file.
Whether you need to reduce image file size before uploading a picture to your website, make photos easier to share or prepare images for social media, this online image compressor gives you simple settings to control the output.
How to compress an image online
- Upload one image or select multiple images from your device.
- Choose your preferred output format and image quality.
- Optionally set a maximum width and height to resize your images.
- Click "Compress images" and wait for processing to finish.
- Download each compressed image or download your files together as a ZIP.
How to reduce image size without losing quality
To reduce image size while keeping good visual quality, start with a higher quality setting and gradually lower it until you get a suitable balance between appearance and file size. You can also resize large images to dimensions closer to how they will actually appear on your website or screen.
Compression results depend on the original image, output format and selected settings. Some images may not become smaller after processing. PNG output is lossless, while JPEG and WebP can use lossy compression.
How to compress JPG images
Upload your JPG or JPEG image, choose JPEG or another supported output format, adjust the quality setting and select "Compress images". You can then download the compressed JPG file. If you choose WebP, the resulting file will use the WebP format instead.
How to compress PNG images
Upload your PNG image and select PNG as the output format if you want lossless output. You can also choose WebP or JPEG when those formats suit your needs. Remember that JPEG does not preserve transparency, so transparent areas will be filled with white.
How to compress WebP, AVIF and HEIC images
Upload your WebP or AVIF image and choose your preferred output format. HEIC and HEIF photos are converted to JPEG before the selected compression settings are applied. Browser support for reading and encoding certain image formats can vary.
Which image format should you choose?
- WebP: A useful choice for smaller website images and general online use.
- JPEG: Commonly used for photographs and broadly supported across devices.
- PNG: Useful for lossless output and images that need transparency.
- AVIF: A modern image format that can produce compact files, depending on browser support.
- HEIC/HEIF: Common photo formats on Apple devices. Supported files are converted before compression.
Can I reduce image size in KB?
This tool reduces image file size through compression and optional resizing. However, it does not currently let you enter an exact target file size such as 100KB or 200KB. The final size depends on the original image, selected format, quality and dimensions.
Are my images uploaded to a server?
Image conversion and compression happen in your browser. Your selected images are not uploaded to a server operated by KitUche. External libraries are loaded from content delivery networks, so an internet connection is needed to load those libraries.
Frequently Asked Questions
Can I compress multiple images at once?
Yes. Select multiple supported images, apply your preferred settings and process them in one session. You can download each result separately or together in a ZIP file.
Can I compress JPG and PNG images online?
Yes. The tool supports JPG, JPEG and PNG images. You can also choose WebP, JPEG or PNG as your output format.
Can I compress HEIC images?
Yes. Supported HEIC and HEIF images are converted to JPEG before the selected compression settings are applied.
Will compressing an image reduce its quality?
It can, depending on the selected format and quality setting. Higher quality settings generally preserve more visual detail, while lower settings can produce smaller files.
Can I resize an image before downloading it?
Yes. Enter a maximum width or height in pixels. You can keep the original proportions or turn that option off.
Can I compress an image to exactly 100KB?
No. The tool currently offers quality-based compression and resizing by dimensions, rather than an exact target file-size setting.
Are my images stored online?
No. Image processing happens in your browser. Your selected images are not uploaded to a KitUche processing server.