Kompresio
Runs in your browser

Image resizer

Resize Image Online

Resize JPG, PNG, WebP, and AVIF images by width, height, percentage, or preset directly in your browser.

JPGPNGWebPAVIF

How to use

  1. 1Upload images.
  2. 2Choose a preset or custom width.
  3. 3Export resized files.
Go to step 1
  1. 01Upload imagesDrag JPG, PNG, WebP into the left panel, or browse.
  2. 02Adjust and processThe Balanced default suits most files. Then click “Resize image”.
  3. 03Download 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

-

Output size

-

Saved

-

Format

-

Dimensions

Appears after clicking “Resize image”

Time

-

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 comes first, then guidance explains the settings and the cases they fit.

How to resize image

  1. 01

    Upload images.

  2. 02

    Choose a preset or custom width.

  3. 03

    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

Instagram postsYouTube thumbnailsBlog coversDocument uploads

Supported formats include JPG, PNG, WebP, AVIF. For heavier 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.