Image resizer
Resize Image Online
Resize JPG, PNG, WebP, and AVIF images by width, height, percentage, or preset directly in your browser.
How to use: 3 steps
- 1Upload imagesDrag JPG, PNG, WebP to the left panel or click Browse
- 2Adjust and processBalanced default works for most files. Then click "Resize image"
- 3Download resultsResults and download buttons appear here
Step 1 — No files yet
Upload to start resize image
Steps: 1) Upload JPG, PNG, WebP, 2) keep the Balanced preset, 3) click "Resize image" then download. Everything runs locally in your browser.
Original size
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Output size
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Saved
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Format
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Dimensions
Appears after clicking "Resize image"
Time
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Your images stay on your device
Resize Image runs locally in your browser: JPG, PNG, WebP, AVIF never leave your device for compression, 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
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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.