Resize any image to exactly 640x640 pixels. A practical square size for web thumbnails, chat avatars, podcast cover previews and app assets.
Last updated: July 2026
640x640
Square
Fill, Fit, Stretch
Modes
JPEG, PNG
Output
Private
No Uploads
Dimensions fixed to 640 x 640 px for this page.
Scales and crops to fill exact size. No white space. No distortion. Recommended.
Drop image here to resize to 640x640
JPEG, PNG, WebP, AVIF, HEIC. All processing stays in your browser.
If your image is smaller than 640x640 pixels, the tool will upscale it and show a warning above the download button. For the sharpest result, start with a source image that is at least 640 pixels on its shortest side.
Drop or select your image
JPEG, PNG, WebP, AVIF or HEIC. Dimensions are already locked to 640x640.
Choose Fill, Fit or Stretch
Fill crops to cover, Fit pads with white, Stretch forces the exact size.
Choose JPEG or PNG
PNG keeps transparency, JPEG gives a smaller file.
Check the live preview
Change settings and the result updates without re-uploading.
Download your 640x640 image
Nothing is uploaded, the file saves straight to your device.
Pair this with
640x640 is a flexible middle-ground square size, large enough to look sharp in most interfaces but small enough to keep file sizes low.
Podcast cover previews
Use as a lighter preview alongside a 3000x3000 master file required by Apple Podcasts and Spotify for final submission.
Chat and messaging avatars
A common display size for profile pictures in messaging apps and web chat widgets.
Web app thumbnails
Square thumbnails for dashboards, media libraries and content management interfaces.
Lightweight product previews
Smaller than full product photography but sharp enough for grid views and search results.
Uploading a 640x640 podcast cover directly to Apple Podcasts
Most directories require a 3000x3000 master file for submission. 640x640 is a good preview or web-player size, but check your platform's actual upload requirement before submitting.
Using Fit mode for a logo that needs a transparent background
Fit always fills padding with solid white, even for PNG output. If you need real transparency around a mismatched-ratio logo, use Fill or Stretch mode instead.
Upscaling a small source image significantly
Going from something like 200x200 to 640x640 asks the tool to invent detail that was never in the original. Start from the highest resolution version you have, or use a larger master image like 1024x1024 and resize down.
Assuming you'll get a WebP or AVIF file
Output on this page is JPEG or PNG only. Convert the downloaded file afterward if you specifically need WebP or AVIF.
Not centering the subject before using Fill mode
Fill crops evenly from the edges to make a square. If your subject isn't centered in the original photo, part of it may get cropped out.
640x640 is a practical square size used for podcast cover art previews, chat application avatars, web app thumbnails and smaller product images. It sits between common icon sizes like 512x512 and larger square formats like 1080x1080, offering a good balance of clarity and small file size for interfaces that do not need full resolution artwork.
The tool upscales it to 640x640 and shows a warning above the download button once the result is ready. Upscaling stretches existing pixels and can soften detail. For the sharpest result, start with a source image that is at least 640 pixels on its shortest side, or use a larger master image such as 1024x1024 and resize down.
640x640 works well as a preview or thumbnail size for podcast cover art, though most podcast hosting platforms request a final master file of 3000x3000 pixels for submission to directories like Apple Podcasts and Spotify. Use 640x640 for web players, embedded players and smaller display contexts where the full master size is unnecessary.
Exactly 640x640. The width and height are locked to this page's preset, so whichever mode you choose, Fill, Fit or Stretch, the output canvas is always precisely 640 by 640 pixels.
Fill is the default and works well for most photos and cover art, it scales up to cover the square and crops evenly from the edges, no padding, no distortion. Fit is better if your source can't be cropped, for example a logo that needs to stay fully visible, it scales to fit inside the square and adds white padding on mismatched sides. Stretch forces the exact 640x640 size by distorting the image and generally isn't the right choice for photos.
Not with Fit mode here, it always fills the padding with solid white, even when PNG output is selected. If a logo or avatar needs a transparent background, use Fill or Stretch mode with PNG output instead.
You can upload JPEG, PNG, WebP, AVIF or HEIC. The output is JPEG or PNG only, there's no WebP or AVIF export on this page.
No. The image is decoded to raw pixels and re-encoded during resizing, so EXIF metadata, including GPS location, is not carried over to the 640x640 output file.
No. Resizing runs entirely in your browser using WebAssembly. Your image is never sent anywhere.
This page resizes one image at a time. If you're preparing a batch of thumbnails or avatars, you'll need to run each image through separately here.
The quality slider defaults to 85, a good balance for thumbnails and cover art previews. Drag it lower for a smaller file, higher if the image will be viewed at close to full size. PNG output has no quality slider, since it's always encoded losslessly.
No sign-up. No uploads. Drop your image above and download the 640x640 result in seconds.
