Image Tools

Bulk Image Resize

Resizes up to 100 images at once to the same width and height, using the browser canvas. With 'Maintain aspect ratio' on, each image is scaled to fit inside the box; with it off, each image is stretched to exactly the width and height you enter.

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Process

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Processed in your browser — your file is not uploaded.

Drop your files here

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Up to 100 files

Width (px)

Height (px)

Maintain aspect ratio

Resize multiple images:

Upload multiple images
Same dimensions for all
Batch processing
100% client-side processing

How to Use

1Add up to 100 image files by dropping them on the upload area or choosing them from your device.
2Enter the Width (px) and Height (px) you want. The defaults are 800 and 600.
3Leave 'Maintain aspect ratio' ticked to scale each image to fit inside that box, or untick it to force every image to exactly that size.
4Click 'Resize Images'.
5Download the result. One image downloads as a single file; several images download together as a ZIP.

About this tool

Updated October 5, 2026

Fit inside the box, or stretch to it

With 'Maintain aspect ratio' on, each image is scaled to fit inside the width and height you enter. With it off, each one is stretched to exactly those dimensions.

Leave it on unless you have a specific reason not to. Stretching a portrait photo into a landscape box distorts faces in a way that is immediately obvious, and no later step can undo it. Fitting instead means the output dimensions vary with each picture's shape — a wide photo hits the width limit, a tall one hits the height — which is usually what people actually want when they say they need everything 'the same size'.

When you need every file identical

If a listing or a grid demands exactly the same dimensions, padding is safer than stretching.

Turning the aspect ratio off will give you identical dimensions, at the cost of distortion. A better route for product listings and galleries is to pad: Canvas Resize puts each image onto a canvas of exactly the size you need, centred, with the space around it filled in a colour you choose. Nothing is stretched and nothing is cropped. Use this bulk tool when fitting is enough, and the canvas tool when the frame must be exact.

Format and naming

Each image is saved in the format its file extension indicates, and keeps its original name. Several files come back as a ZIP.

A single file downloads directly instead. Because names are preserved, unpack the ZIP into a new folder rather than over your originals — once a resized copy replaces the full-size file, the detail is gone for good. Keep the originals for anything you may want to print, crop closely, or reuse at a larger size later.

Shrinking is safe, enlarging is not

Making images smaller discards detail you will not see at the new size. Making them larger invents pixels and looks soft.

If you enter dimensions larger than a source image, the browser interpolates between existing pixels to fill the bigger grid. Nothing new appears; edges simply soften. That is occasionally acceptable when a minimum size is demanded, but it is never an improvement. Where enlarging matters, find a larger original instead of scaling a small one up.

Batch Process Images in Your Browser, No Desktop Software
When a whole folder needs the same resize, compression, conversion or watermark, a browser batch tool can do it. Here is how to plan a batch, its memory limits, and where desktop software still wins.

Features

Accepts up to 100 image files per run (any format your browser can open)
One width and one height applied to every file
'Maintain aspect ratio' checkbox: fit inside the box, or stretch to exact dimensions
Each image is saved in the same format as the original, based on its file extension
Two or more files are delivered as a ZIP; a single file downloads directly
Runs in your browser; the images are not uploaded

FAQ

Will every output image be exactly the size I typed?

Only if you untick 'Maintain aspect ratio'. With it ticked, each image is scaled down or up to fit inside the box, so a landscape photo in an 800x600 box may come out 800x533. Different images can therefore end up with different dimensions.

Does unticking the aspect ratio crop my images?

No. It stretches them to the exact width and height, which distorts the picture if the ratio is different. This tool has no crop or padding mode. For exact-size output without distortion, use the single-file Canvas Resize tool, which pads instead.

How do I get my files back?

If you process one image you get that image. If you process two or more, the results are bundled into one ZIP, and each file keeps its original name with the output extension.

Are my images uploaded anywhere?

No. The resizing is done by your browser with a canvas element, and the files stay on your device. A very large batch of high-resolution photos can be slow or memory-hungry, so split it if the tab struggles.

Image Resizer

Resize up to 50 images to set pixel dimensions with contain, cover or stretch modes.

Resize by Percentage

Scale an image to 10 to 200 percent of its original size, keeping proportions.

Bulk Image Compressor

Compress up to 100 images with one quality slider in your browser; multiple files come back as a ZIP.