Social Media Image Resizer
Resize and crop images to the exact size for Instagram, YouTube, Facebook, LinkedIn, X and WhatsApp — in one click, without uploading.
Private by design — everything is processed on your device. Nothing you type or upload is sent to our servers.
What it does and why it matters
Every social platform crops images differently. A photo that looks perfect on Instagram may be cut off as a YouTube thumbnail or a Facebook cover. Posting at the correct size keeps faces, logos and text exactly where you want them.
Pick a preset, choose whether to fill the frame (crop) or fit the whole image on a background colour, and download a high-quality JPG or PNG. Everything happens on your device, so your photos stay private.
How to use the Social Media Image Resizer
- Choose an imageSelect a JPG, PNG or WebP from your device.
- Pick a platform sizeChoose Instagram, YouTube, Facebook, LinkedIn, X or WhatsApp.
- Fill or fitCrop to fill the frame, or fit the whole image on a colour.
- DownloadSave as JPG or PNG, ready to post.
What size is an Instagram post?
Square posts are 1080 × 1080 px and portrait posts are 1080 × 1350 px. Stories and reels are 1080 × 1920 px.
What size is a YouTube thumbnail?
1280 × 720 px (16:9). Keep it under 2 MB.
What is the difference between fill and fit?
Fill crops the image so it covers the whole frame. Fit shows the entire image and adds a background colour to the empty space.
Will the quality drop?
Downscaling keeps quality high. Enlarging a small image can look soft, so start with the largest version you have.
Are my photos uploaded?
No. Resizing happens in your browser and nothing is sent to Klaslead.