Bulk Image Resizer
Drop in a whole folder of photos and resize every one to the same setting in a single pass — exact pixels, a percentage, or a ready-made preset — then take them all as one ZIP. Everything runs in your browser — nothing is uploaded. Need a smaller file instead? Compress or convert.
Drag the preview to choose which part of the image is kept. The same framing is used for every image in the batch.
How to resize an image
Resizing changes the pixel dimensions of an image — making it fit a specific width, a percentage of the original, or a platform's required size. Smaller dimensions also mean a smaller file, which is why resizing is one of the most effective ways to speed up a page.
- Add your images, or drop them in.
- Choose By dimensions for an exact width and height, By percentage to scale, or a Preset for common social and screen sizes.
- Click Resize, then download each file or grab them all as a ZIP.
Exact or proportional
Set precise pixels with aspect-ratio lock, scale by percentage, or pick a preset. Whatever the target needs.
Batch, instantly
Resize a whole folder at once to the same dimensions. No upload wait, no queue, no file limit.
Nothing is uploaded
Your images are resized by your own browser and never sent to a server, so they stay completely private.
Resize for a specific platform
Jump to a common size:
Other image tools:
Will resizing reduce quality?
Making an image smaller is safe — you are discarding pixels you no longer need, and the result looks clean. Making an image larger than its original is where quality suffers, because the browser has to invent pixels that were never there, which looks soft or blocky.
As a rule: resize down freely, but avoid scaling up much beyond the original dimensions. If you need a smaller file rather than smaller dimensions, use the compressor instead.
Square sizes
Same width and height — profile photos, icons, product shots:
Landscape sizes
Wider than tall — screens, banners, covers and thumbnails:
Portrait sizes
Taller than wide — passport photos, forms and phone screens:
Change the aspect ratio
Paper, print & photo sizes
Paper and photo sizes in mm, cm and inches, plus DPI tools:
Resize for a platform
Ready-made sizes for social profiles and posts:
Resize tools
Batch resizing, DPI and crop tools:
Resizing a whole batch the right way
One setting, every file. Whatever you choose — a width of 1200 pixels, 50%, or the Instagram preset — is applied to every image in the list. You set it once instead of opening twenty files one by one.
Mixed shapes? Set only the width. A batch usually holds portrait and landscape photos together. Type just the width with Keep aspect ratio ticked and every image keeps its own shape, all at the same width. Typing both width and height forces every photo into one shape, which crops or stretches the ones that don't match.
Percentage is the safest bulk option. 50% halves every image whatever its size, so a folder from different cameras shrinks evenly — handy before emailing or uploading an album.
Download as a ZIP. When the batch is done, one click saves every file
in a single archive. Each file keeps its original name plus its new size
(for example beach-1200x800.jpg), so nothing gets mixed up.
- Need the files smaller in KB as well? Run the ZIP through the compressor afterwards.
- Square crops for a whole shop? Use square crop first, then resize here.
Other ways to resize in bulk
Same batch workflow, different starting point:
Frequently asked questions
How many images can I resize at once?
There is no fixed limit — it depends on your device's memory. Batches of 50–100 phone photos work on most computers; on a phone, smaller batches of 10–20 are smoother.
What is the difference between resizing and compressing?
Resizing changes the dimensions (the width and height in pixels). Compressing keeps the dimensions but reduces the file size by lowering quality. Resizing down does both at once, which is why it is so effective. For file size alone, use the compressor.
Will the aspect ratio be kept?
In dimensions mode, tick "Keep aspect ratio" and set just the width or height — the other is calculated automatically so the image is not stretched. Untick it to force exact dimensions, which may distort the image.
Can I resize many images at once?
Yes. Drop in as many as you like and they are all resized to the same setting in one go, then you can download them together as a ZIP. There is no limit on how many.
Are my images uploaded?
No. Resizing happens entirely in your browser. Nothing is transmitted or stored, and you can disconnect from the internet after the page loads and it still works.
Which format will I get back?
Images keep their original format where the browser supports it (JPG, PNG, WebP). Formats a browser cannot write, like GIF or BMP, come back as PNG. To change format on purpose, use the converter.