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Image Resizer

Resize images by width and keep aspect ratio for social, web, and upload limits.

  • 100% local
  • No signup
  • Works offline once loaded
  1. 1Upload
  2. 2Set size
  3. 3Download
JPG · PNG · WEBP

Drag and drop your file

or pick from your device

Re-encoded locally · pixels never upload

Width (px)

Height (px)

82%

What this does

Resize an image to exact pixel dimensions — or to a preset for Instagram, LinkedIn, email, or web.

Drop in any image, type the dimensions you need (or pick a preset), and download the resized version. Aspect ratio locks by default so nothing stretches. Runs in your browser using Canvas — no server upload, no quality penalty beyond what JPG re-encoding already costs.

How to resize an image

  1. 1

    Drop in your image

    JPG, PNG, WebP — drag or click. The current dimensions show automatically so you know where you're starting from.

  2. 2

    Set new dimensions

    Type a width in pixels, or pick a preset (Instagram square 1080x1080, LinkedIn cover 1584x396, etc.). With aspect ratio locked, typing one dimension auto-fills the other so the image doesn't distort.

  3. 3

    Download the resized version

    Hit resize. The new image generates in your browser and downloads — original is untouched. Quality is preserved as much as the format allows.

Platform sizes at a glance

Native pixel sizes for the platforms that crop or compress aggressively. Resize before upload to keep your composition intact.

1:1

Instagram square

1080×1080

4:5

Instagram portrait

1080×1350

9:16

Instagram story

1080×1920

21:8

Facebook cover

820×312

4:1

LinkedIn banner

1584×396

3:1

X header

1500×500

16:9

YouTube thumbnail

1280×720

2:3

Pinterest pin

1000×1500

16:9

Web hero (2x)

1920×1080

3:2

Email inline max

600×400

Why resize before upload

Platforms auto-crop and re-compress oversized uploads. Sending a 4000×3000 photo to Instagram = it picks a 1080×1080 crop you didn't choose, then re-compresses it. Resize first, control the crop.

2x for Retina screens

Web heroes should be 2x the rendered display size so they look sharp on high-DPI screens. A hero displayed at 960px wide should be exported at 1920 wide for Retina.

Privacy

Images stay on your device

Resizing might seem low-stakes, but the images you resize often aren't — product photos before launch, screenshots from internal dashboards, photos with embedded location metadata. Our resizer runs in your browser using Canvas. Nothing uploads.

  • No image uploaded to any server
  • EXIF data (location, camera info) is stripped on resize
  • Works on photos from your phone, screenshots, design exports
  • Works offline once the page is loaded

Common image resize use cases

Social media

Hitting the platform's exact spec

Instagram, LinkedIn, X, Facebook each crop and compress differently. Resize to the platform's native size before uploading to avoid auto-cropping that lops off your subject.

Email

Inline email images that don't blow up the screen

Phone photos in email come in at 4000+ pixels wide and overflow on most clients. Resize to 1200px before pasting into newsletter or signature.

Web

Hero images sized for actual viewport

A 4K hero photo at 4 MB hurts Core Web Vitals. Resize to 2x your max display width (1920 for 960-wide layout) and let the browser handle DPI scaling.

Marketplace

Etsy / eBay / Shopify product listings

Most marketplaces have a max file size or pixel cap. Resize before upload to skip in-browser cropping and re-uploads.

Document

Photos for embedding in a Word/Google Doc

A 12 MP photo dropped in a Word doc balloons the file size. Resize first to keep documents under 10 MB.

Print

Setting the longest edge for print

A 4x6 print needs 1200x1800 px at 300 DPI. A 16x20 needs 4800x6000 px. Resize before sending to the print service so they don't have to scale (which sometimes adds soft edges).

How this compares to other image resizers

Feature
BBulkShare
ResizeImage.net
PicResize
Adobe Express
Squoosh
Runs in browser onlyYesNoNoNoYes
Files uploaded to serverNeverYesYesYesNever
Preset sizes (social media, etc.)YesYesYesYesNo
Lock aspect ratioYesYesYesYesYes
Quality sliderYesYesYesYesYes
Strips EXIF data automaticallyYesNoNoPro onlyYes
Account requiredNoNoNoYesNo
Batch resize multiple at onceNoNoYesPro onlyNo
Works offlineYesNoNoNoYes

Tips for sharper resizes

  1. 01

    Always downsize, never upsize

    Going from 4000px to 800px is fine — the algorithm samples down cleanly. Going from 800px to 4000px just makes a blurry mess. If you need a larger version, find the original at higher resolution.

  2. 02

    Power-of-two dimensions work best for web

    Browsers handle 1024, 1280, 1920 cleaner than odd sizes. For Retina/3x screens, double those: 2048, 2560, 3840. Avoids subpixel rendering artifacts.

  3. 03

    PNG → JPG for photos, JPG → PNG only for logos

    If you're resizing a photo saved as PNG, convert to JPG at the same time — you'll cut file size by 70%+ with no visible quality loss. Only keep PNG for logos, icons, and images with transparency.

  4. 04

    EXIF strip is on by default — and that's a feature

    Phone photos contain GPS coordinates, camera serial number, and timestamps. When you upload to social media or email, that data goes with the image. Our resizer drops EXIF on resize. Important for product photos shot at your home address.

  5. 05

    Don't resize if you're going to crop anyway

    If you need a 600x600 crop from a 4000x3000 photo, crop first, then resize. Resizing first wastes the original detail you'd otherwise use for the crop.

No signup. No upload. Just the result.

Local only

Files never leave your browser.

Everything runs locally in this tab. Nothing uploads, nothing stores on a server, nothing indexes.

Ready in seconds

Fast — no queues, no ads.

No progress bars stuck at 99%, no rate limits, no 'please wait' screens. Drop, click, done.

On Pro

Branded delivery, when needed.

When the free tool isn't enough, deliver from files.your-agency.com — password and view analytics included.

Frequently asked

Usually yes. Smaller dimensions typically reduce file size, especially with JPG or WEBP output.

Yes. Aspect ratio lock is enabled so images do not get stretched.

Yes. You can export resized files as JPG, PNG, or WEBP.

Yes. It is designed for quick size fixes before uploading to portals and social platforms.