A bulk image resizer that asks what the pictures are for
Most bulk image resizers open with two empty boxes, width and height, and leave you to work out the right numbers. Batch Image Resize starts from the other end. You add the photos, then answer one question in the side pane, What are these for, and the numbers follow from the answer.
Seven answers cover the common jobs: a web page, an email or message, a grid of thumbnails, a profile picture, half the size, a quarter of the size, or a size you type yourself. Each one carries its own target box and its own JPEG and WebP quality, so a batch meant for email comes out lighter than a batch meant for a full-screen browser.
Before anything runs, every row in the list reads like a receipt: the picture's current pixel size, an arrow, and the size it will become. Pictures that are already smaller than the target say so and are left at their own size. After the run, the same rows show the file size before and after, so you can see how much each photo shrank.
How to resize multiple images at once
The whole job is four steps, and none of them involves a calculator.
- Drop a folder or a selection of photos onto the window, or click Add pictures.
- Under What are these for, pick the answer that matches the job. Choose A size I'll type for a custom Width and Height; leave one of them empty and it follows the other.
- Set Save to Beside the originals, Into a folder…, or Replace the originals, and set Write as if you want a different file type.
- Press Resize. The summary line counts how many were resized and how many failed, and a failed row shows the reason.
Bulk resize photos for the web, email and social profiles
For a web page fits each picture inside 1920 × 1080, which stays sharp in a full-screen browser without turning into a slow download. To email or message fits inside 1024 × 768, so a message carrying several photos stays a manageable size.
Thumbnails and Profile picture work differently. Instead of fitting the picture inside a box, they fill a square, 320 pixels for thumbnails and 512 for a profile photo, trimming whatever overflows and keeping the middle. That is what makes a gallery grid line up and what most sign-up forms quietly expect from an avatar.
Half the size and A quarter of the size scale every picture by 50% or 25% whatever its starting dimensions, which suits a mixed folder from several cameras. A typical phone photo at 25% lands around 1000 pixels wide.
Image resizer for Windows that never stretches a small photo
Every fitted target is a ceiling, not a demand. A 900-pixel picture in a batch set for a web page stays 900 pixels instead of being blown up and blurred, and its row is marked already small enough so you know nothing will happen to it. The square targets are the one exception, because a thumbnail grid needs every tile the same size.
Write as turns the resize into a conversion at the same time: keep each file's own type, or save the batch as JPEG, PNG, WebP, TIFF or Bitmap. The reader is broader than the writer. Alongside the usual JPEG, PNG, GIF, BMP and TIFF it opens HEIC and HEIF phone photos, AVIF, JPEG XL, JPEG 2000, PSD, TGA, DDS, EXR, HDR, QOI and several older formats, so a folder copied off a phone can come out as JPEGs sized for email in one pass.
