Try now
Image Resizer — Platform presets & custom dimensions | Resizely
0 files sent to any server

Resize images for any platform — in one click.

Instagram, LinkedIn, YouTube, and more. Custom dimensions, percentage, or one-tap presets. Files never leave your browser.

Drop an image to resize

or click to upload from your device

JPG PNG WEBP AVIF GIF
Resizing a whole product catalog? Try batch mode (Pro) →
IMG
image.jpg
— · — × —
— × — → — × —
Preview
New size — × —
Original —
New size —
Reduction —
Instagram
Post (square)
1080 × 1080
Post (portrait)
1080 × 1350
Story / Reel
1080 × 1920
Profile pic
320 × 320
LinkedIn
Post (square)
1200 × 1200
Link post
1200 × 627
Banner
1584 × 396
Profile pic
400 × 400
YouTube
Thumbnail
1280 × 720
Channel art
2560 × 1440
Web & Email
HD wallpaper
1920 × 1080
OG / Twitter card
1200 × 630
Email-friendly
800 × 600
Shopify product
2000 × 2000
Other social
X / Twitter post
1200 × 675
X / Twitter banner
1500 × 500
Facebook post
1200 × 630
Pinterest pin
1000 × 1500
Width
px
Height
px

Aspect ratio is locked. Click the icon to toggle.

50%
— × —

Output format

Same
JPG
PNG
WebP

Quality

90

How to use it

Three steps, no signup, nothing uploaded.

1
Drop your image
Drag any image onto the upload zone or click to browse. Loading happens locally in your browser — no server round-trip.
2
Pick a size
Choose a one-tap platform preset (Instagram, LinkedIn, YouTube…), enter custom dimensions, or scale by percentage.
3
Download
Export the resized image immediately. Aspect ratio is preserved by default, with a lock toggle when you need an exact fit.

Why use this tool

100% private
Resizing happens locally in your browser. Files never touch a server, so your images stay yours.
One-click presets
Ready-made sizes for Instagram, LinkedIn, YouTube, and more — plus custom dimensions and percentage scaling.
Free, no signup
Resize as many images as you like, free forever, with no watermarks and no account.
Works everywhere
Any modern browser on desktop or mobile. No install, no plugins, no learning curve.

About image resizing

Making an image smaller doesn't reduce quality at normal viewing distances — pixels are removed, but the visible result looks the same. Making an image larger (upscaling) does introduce blur, since pixels have to be invented. For best results, always resize down from a high-resolution original. We use the browser's built-in bicubic interpolation which is what Photoshop uses too.
Each platform (Instagram, LinkedIn, YouTube) has its own optimal display size. Uploading a too-large image wastes bandwidth and load time; uploading too-small images causes pixelation. Our presets match the exact dimensions each platform displays at, so you get crisp results and fast uploads.
Resizing scales the whole image — same content, different dimensions. Cropping removes parts of the image — different content, same or different dimensions. Use resize when you want the same image at a different size; use crop when you want to focus on part of the image.
Verify it yourself: open your browser's DevTools (F12), go to the Network tab, then resize an image. You'll see zero outgoing requests with image data. The live monitor in the bottom-right corner shows real-time network activity. All processing uses your browser's canvas API — your files literally cannot reach us.
Resizely Pro

Resizing a whole batch?

Pro unlocks unlimited batch resizing, ZIP downloads, and all future tools for one flat, one-time price — no subscription.

Unlimited batch One-click ZIP All future tools
One-time payment · no subscription · free core tool stays free
Privacy monitor
→ image uploads: 0
→ data sent to server: 0 bytes
Action successful