How many images can I resize at once?

There is no fixed limit; the bound is your device's memory. Hundreds of 12-megapixel photos are fine on a modern laptop.

Does resizing change the file format?

Not unless you ask it to. By default the output matches the input for JPEG, PNG and WebP; other inputs become JPEG.

Is EXIF metadata preserved?

No. Re-encoding drops EXIF, including GPS coordinates — usually what you want for photos going public.

Where does the resizing run?

In a Web Worker in your browser. Nothing is uploaded.

Bulk Image Resizer

Resize a whole product shoot to one size — by longest side, percentage or exact canvas — without uploading a single file.

Free
No upload
No signup
Batch

Drop images here, paste, or click to choose

JPEG, PNG, WebP, HEIC, GIF, BMP, AVIF · any number of files · processed on your device, never uploaded

Resize byLongest side (px)

Output formatQuality — 90Allow upscaling smaller imagesOff by default — enlarged photos look soft and marketplaces flag them.

A listing needs a 2000 px master, the product page needs 1200 px, the newsletter needs 600 px, and the supplier sent 6000 px TIFFs. Resizing one at a time in an editor is the slow part of every launch. This tool resizes any number of images in one pass, using a multi-step resampler so downsized photos stay sharp instead of going mushy.

Pick a rule — longest side, shortest side, percentage, or an exact width and height with crop or letterbox — and every file follows it. Processing runs in a background thread in your browser; nothing is uploaded.

How it works

01
Drop your images
JPEG, PNG, WebP, HEIC, GIF, BMP or AVIF. No count limit.
02
Choose the rule and format
Longest side 2000 px is preselected. Keep the original format or convert to JPEG, PNG or WebP.
03
Download
Each file, or one zip with the whole batch.

Which resize rule to use

Longest side is the marketplace rule: Amazon (1600–2000 px), eBay (1600 px) and Shopify (2048 px) all define size by the longest edge. Shortest side is Etsy's rule (2000 px). Percentage is for proportional reductions of a mixed batch. Exact size with crop is for social formats; exact size with letterbox keeps the whole image on a padded canvas.

Why this tool never upscales by default

Enlarging a photo invents pixels; the result is soft and marketplaces flag it. If a file is smaller than your target, the tool leaves it alone and says so. You can allow upscaling explicitly for cases where a slightly soft image is acceptable, such as a low-resolution logo being placed on a large canvas.

Questions

How many images can I resize at once?: There is no fixed limit; the bound is your device's memory. Hundreds of 12-megapixel photos are fine on a modern laptop.
Does resizing change the file format?: Not unless you ask it to. By default the output matches the input for JPEG, PNG and WebP; other inputs become JPEG.
Is EXIF metadata preserved?: No. Re-encoding drops EXIF, including GPS coordinates — usually what you want for photos going public.
Where does the resizing run?: In a Web Worker in your browser. Nothing is uploaded.

Next step

Now make the studio shot from the same photo

The photo you just prepared is all Glowya needs. Pick a template built for your product category and it restages the product into a lit, styled scene — label and packaging untouched. Every plan starts with a 7-day free trial.