How to compress images to a target size
IMAGE FLOW makes new copies of your images in your browser. It does not alter the original files on your device. Add your images, choose only the settings you need, then use individual cards for exceptions.
Compress to a target file size
- Choose Select images. Start with one image to find suitable settings.
- Choose 100 KB, 200 KB, 500 KB, 1 MB, or enter a custom value. For JPG and WebP, IMAGE FLOW adjusts quality and dimensions to find a result at or below the target.
- If the photo cannot reach the requested size while keeping the minimum quality and dimensions, the result card says that the target was exceeded.
- PNG is lossless, so use JPG or WebP for a reliable target-size result.
Resize and crop only when needed
The default keeps the original dimensions. Choose width, height or longest side and enter pixels only when you need a different size. Resizing preserves the aspect ratio. Open Additional editing settings for crop and watermark controls. Cropping uses the center of the image, so check whether a face or important detail was cut off.
Download results
Download an individual image or choose Download all as ZIP. Output files automatically include _IMAGE_FLOW, and ZIP files include the current date. Matching names are numbered inside a ZIP. Changing settings invalidates previous output, so process the images again before saving.
Tips for smaller, useful images
For a website illustration, first resize to the dimensions you actually need, then adjust JPG or WebP quality. A new format does not guarantee a smaller file; compare the displayed output size. Use PNG or WebP when transparency matters. JPG fills transparent areas with your chosen background color.
EXIF and visible private information
The tool redraws and re-encodes images, removing standard EXIF location and camera metadata. This does not hide information visible in the image itself, such as a face, address or document number. Review the picture before sharing it.
Frequently asked questions
What are the limits?
Up to 50 images per batch, 20 MB and 25 megapixels per image. Output is limited to 25 megapixels and 16,000 pixels per side. Browser memory may require smaller batches.
Does it preserve animation?
This is a still-image tool. Do not rely on it to preserve animated frames. JPG, PNG and WebP still images are the intended workflow.
Why is the result larger?
The original may already be highly compressed. High quality, a larger pixel size or a different format can increase file size. Lower the size or quality and compare again.
Are files uploaded?
No. Image processing takes place in your current browser tab. An internet connection is needed to load the website and its resources. Save your output before closing or refreshing the tab.