ResizeImg

Exact pixels · No upload

Resize image to 512×512

Export exact 512×512—a common size for icons, stickers, and larger PWA assets. Free. No upload.

Preview

Choose an image to preview the result

Related resize guides

Resize image to 1080×1080

Exact pixels · No upload

PWA icon 192×192 online

Exact pixels · No upload

Resize image to 800×800

Exact pixels · No upload

Resize image features

Resize image online to exact pixels—presets, aspect lock, favicon ICO—all local, no upload.

Resize to exact pixels

Change image size to exact dimensions—1920×1080, 1080×1080, favicon 32×32, OG 1200×630, and custom W×H up to 10,000px.

Crop image to square

Crop photo to 1:1 square or any width × height. Drag the frame on the original, then export.

Rotate image 90 degrees

Rotate photo 90° left/right or 180° to fix sideways shots—no upload.

Free image resizer — no upload

Runs in your browser. Your file never leaves your device.

Resize keep aspect ratio

Lock proportions to resize without stretching, or unlock for exact pixels.

Export JPG, PNG, WebP, ICO

Export web formats or a multi-size favicon.ico (16 / 32 / 48) for site icons.

Common resize sizes

Favicon 32×32 & PWA icons

Common sizes: favicon 16×16 / 32×32, Apple Touch 180×180, PWA 192×192—PNG or ICO.

Resize to 1920×1080 & OG 1200×630

Common sizes for video thumbs and share images: Full HD, 1280×720, Open Graph 1200×630.

Crop to square & avatars

Crop photo to 1:1 or resize to 1080×1080 / 800×800 for profile pictures and product grids.

How to resize an image online

  1. Step 1

    Choose or drop an image on your device

  2. Step 2

    Set exact width × height or tap a size preset

  3. Step 3

    Download — nothing is uploaded

Resize image FAQ

What is 512×512 good for?

App icons, stickers, and larger PWA assets often use a 512×512 square source.

Can I make a favicon from 512×512?

Yes—export ICO from a large enough square and ResizeImg can pack 16/32/48, or resize down to 32×32 on the favicon page.

PNG or WebP for icons?

PNG is the safest default for icons with transparency. WebP works when your target supports it.

Is my image uploaded?

No. The 512×512 export is created in your browser.

Crop or rotate online

Crop image online — square or any size

Crop a photo online to any width × height—or start square for 1:1. Drag the frame, then download. Free. No upload.

Rotate image online 90 degrees

Rotate a photo 90° left/right or 180° to fix sideways shots. Preview first. Free. No signup. No upload.

Need a smaller file size (KB) instead?

Use ImageToSize to compress to a target KB — complementary to exact pixel resize.

Open ImageToSize

Done resizing? Make a PDF

Combine images into one PDF with ImagesToPDF — same Cabokit privacy-first approach.

Open ImagesToPDF