Image resizer
Resize Image Online
Resize JPG, PNG, WebP, and AVIF images by width, height, percentage, or preset directly in your browser.
Smart recommendation example
Ready to optimize
Upload images to preview, analyze, convert, clean metadata, crop, or create a PDF directly in the browser.
Original size
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Output size
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Saved
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Format
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Dimensions
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Time
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Your images stay on your device
Core optimization runs in the browser. Files are not sent to an API route for MVP compression, conversion, resize, crop, preview, or ZIP export.
Guide
How to use Resize Image
Kompresio keeps resize image online practical: the tool loads first, then useful guidance explains settings and use cases.
How to resize image
- 1
Upload images.
- 2
Choose a preset or custom width.
- 3
Export resized files.
Why use Kompresio
- Resize for Instagram, YouTube, website hero images, and marketplace photos.
- Keep aspect ratio locked for clean output.
- Compress after resizing for smaller downloads.
Best for
Supported formats include JPG, PNG, WebP, AVIF. For advanced server-side processing, use direct object storage upload rather than posting large images to serverless functions.
Related tools
Continue the image workflow
Move between compression, conversion, resize, metadata cleanup, and batch export without changing apps.
Compress Image
Compress JPG, PNG, and WebP images online with Kompresio. Fast, private, browser-based image compression with batch ZIP download support.
Compression
Convert to WebP
Convert JPG, PNG, and other images to WebP in your browser. Kompresio helps create lightweight WebP files for faster websites.
Conversion
Crop Image
Prepare images for common aspect ratios. Kompresio includes a crop-ready workflow for social, marketplace, and document images.
Resize
Batch Converter
Batch process multiple images with Kompresio. Convert, compress, resize, clean metadata, and export results as a ZIP archive.
Batch
FAQ
Questions about Resize Image
Clear answers for privacy, formats, batch processing, and output quality.
Are my images uploaded to a server?
Core tools run in your browser. For the MVP flow, Kompresio processes previews, compression, conversion, resizing, metadata cleaning, and ZIP export locally on your device.
Can I process multiple images?
Yes. You can add multiple files to the queue, process them together, and download the results individually or as a ZIP archive.
Does compression reduce quality?
Lossy formats can reduce quality if the quality value is too low. The balanced presets use practical values for smaller files while keeping the image visually clean.