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Bulk image resizer

Resize a whole batch of images to one shared size. Start from a preset for website images, square product photos, social posts, or thumbnails, or set your own width and height. Process up to 10 images at once for free and download them in one ZIP. No sign-up or watermark.

Add files to get started

How to resize multiple images online

  1. Step 1

    Pick a size

    Choose a size preset under the upload area, or open Batch settings to set your own width, height, and fit. Website images keeps the whole image within 1,200 × 1,200 px.

  2. Step 2

    Upload your images

    Add images from your device, a URL, Google Drive, or Dropbox. If you change the settings afterwards, use Apply to all to update the whole batch.

  3. Step 3

    Resize and download

    Select Resize images, then download the completed batch as one ZIP. Save your preferred settings as a recipe when you need the same dimensions again.

Choose how every image fits the target dimensions

  • Preserve aspect ratios without cropping

    Use Fit within dimensions to keep the whole image. A 2,400 × 1,600 px photo becomes 1,200 × 800 px within a 1,200 × 1,200 px target. Portrait and landscape images keep their proportions instead of being stretched.

  • Crop a batch to exact dimensions

    Choose Crop to dimensions when every product thumbnail, marketplace image, or profile picture must fill the same width and height. It crops the edges instead of stretching the subject. Select a crop position to keep the important area visible.

  • Standardize mixed image ratios with a background

    Choose Fit with padding to place portrait and landscape images on the same canvas without cropping them. Pick a background color for the added space. Transparency depends on the output format. JPEG always needs an opaque background.

Common bulk resize jobs

Each setup can be saved as a recipe and applied again when the next batch arrives.

  • Square product photos

    Portrait and landscape shots share one square white canvas, so the catalog grid stays consistent without cropping a product.

    Settings

    • Fit with padding
    • 2,048 × 2,048 px
    • White background

  • Blog and website images

    Wide and tall photos keep their proportions while staying light enough for a content page.

    Settings

    • Fit within dimensions
    • 1,200 × 1,200 px
    • Original format

  • Social posts and thumbnails

    Every photo fills the same square, cropped from the center, ready for a feed or a card grid.

    Settings

    • Crop to dimensions
    • 1,080 × 1,080 px
    • Center

Resize Shopify product images to the same size

Product photos only line up on Shopify collection pages when they share one aspect ratio. For square images, Shopify's product media guide says 2,048 × 2,048 px usually displays best.

Choose the Square product photos preset to place each photo on a 2,048 × 2,048 px white canvas without cropping it. Photos smaller than the canvas are centered without being enlarged. Save the setup as a recipe to prepare the next product drop the same way.

Shopify product image sizes

Best square size
2,048 × 2,048 px
Maximum dimensions
5,000 × 5,000 px
Maximum resolution
25 megapixels
Maximum file size
20 MB

Save the setup for your next batch

Preparing product photos every week? Save an image recipe to reuse them. A free account includes one recipe. Paid plans add larger batches, more recipes, and delivery to a selected Google Drive or Dropbox folder after you start each batch.

Compare batch limits and cloud delivery

Bulk image resizer FAQ

How do I resize multiple images at once?

Choose one width, height, and fit mode in Batch settings, then upload up to 10 images on the Free plan. Apply to all updates images already in the batch. After processing, download the completed files together as one ZIP.

Will resizing stretch or crop my photos?

Not with the default Fit within dimensions: it preserves proportions without cropping. Crop to dimensions fills the requested size by cropping, Fit with padding adds a background, and Stretch to dimensions can distort the image. Choose the fit that matches your destination.

Does resizing also reduce image file size?

Often, but not always. Fewer pixels usually need less data, while the final size also depends on the output format, quality, and image content. Use the bulk image compressor when file weight is your main goal.

Can I resize, compress, and convert images in one job?

Yes. Set the dimensions, enable an output format, and adjust its quality settings in Batch settings. Apply to all updates files already uploaded. FastConvert applies the compatible settings together, so you do not need to download and upload again between steps. File size depends on the source and selected settings.

Will my images keep their original format?

Yes by default for supported raster formats, although the files are re-encoded. SVG is rasterized to PNG and HEIF output uses HEIC. You can enable a specific output format in Batch settings. Metadata is removed by default.

How do I make all product photos the same size?

Choose the Square product photos preset. Every image is fitted within 2,048 × 2,048 px and padded on white, so the whole product stays visible. Smaller photos are centered on the same canvas without being enlarged. To fill the square instead, choose Crop to dimensions in Batch settings and pick the crop position.

Can I reuse the same resize settings and send the results to Google Drive?

Yes. Save the dimensions, fit, and output format as a recipe, then apply it to the next batch. A free account includes one recipe. Paid plans add more recipes and can deliver each batch you start to a selected Google Drive or Dropbox folder.

Do I need to compress images before uploading them to Shopify?

Usually not. Shopify's help center says images don't need to be manually compressed before upload, and Shopify chooses formats such as WebP or AVIF when it delivers them. Resize when your photos need one consistent shape, or when they exceed Shopify's limits of 5,000 × 5,000 px, 25 megapixels, or 20 MB per product image.

Does the bulk image resizer work on phones, tablets, Mac, Windows, and Linux?

Yes. FastConvert works in a modern web browser on phones, tablets, and desktop computers, with no image app to install. Available upload and download choices can vary with the browser and device.

Are images uploaded to the bulk image resizer private, and when are they deleted?

Yes. FastConvert transfers files over encrypted connections and stores originals and results temporarily for server-side processing and download. Files are kept for 24 hours on Free, 1 week on Basic, or 1 week on Pro, then scheduled for automatic deletion. We do not sell or rent personal data, use uploaded images for advertising, or use them to train general-purpose AI models. If you choose Google Drive or Dropbox, that provider supplies or receives the selected files as part of your request. No online service can guarantee absolute security.