Pi7's Bulk Image Resizer: Supports PNG, JPEG, WEBP & SVG Files
No limit: resize as many images as you need.
Pi7's Bulk Image Resizer: Supports PNG, JPEG, WEBP & SVG Files
No limit: resize as many images as you need.
Pi7 Bulk Image Resizer changes the size of many photos at once. Drop in a folder. Type one width. Get every file back in one ZIP.
There is no limit on how many photos you add. Nothing is uploaded. Your photos stay on your device, and the tool is free.
Pick Pixels when you have a number to hit. A 1200 px blog width. A 512 px profile picture. A site that rejects big files.
Pick Percentage when your photos are different sizes. Set 50% and each one drops by half. Small photos stay small.
Do not force mixed sizes to one width. Your small photos get stretched. Stretched photos look soft.
Two things make a photo heavy. The number of pixels, and how hard those pixels are squeezed.
A 4000 px phone photo is often 6 MB. Drop it to 1200 px wide and most of that weight goes.
Then tick Compress Image. Set quality to 70-80%. The file gets much smaller. You will not see the difference on screen.
Go below 50% and you start to see mess around text and edges. Aiming for 100 KB or 200 KB? Resize first, then step the slider down.
Most people want one of these six things. Copy the row and skip the guesswork.
| What you need | Mode | Setting | Output |
|---|---|---|---|
| Blog or website photos | Pixels | 1200-1600 px wide, 75% quality | WEBP |
| Shop product photos | Pixels | 1000 x 1000, ratio off | JPEG |
| A folder that is too heavy | Percent | 50%, 80% quality | Default |
| Email attachments | Pixels | 1024 px wide, 70% quality | JPEG |
| Profile pictures | Pixels | 512 x 512 or 256 x 256 | PNG |
| Logos with clear background | Pixels | Your width, no compress | PNG or WEBP |
You can load PNG, JPEG, WEBP and SVG. Mix them in the same batch if you want.
You can save as JPEG, PNG or WEBP. Pick Default to keep each file as it came in.
One catch. Save a see-through PNG as JPEG and the clear parts turn white. JPEG cannot hold a clear background. Use PNG or WEBP instead.
HEIC photos from an iPhone will not load. Change them to JPEG first.
You do not need a second run for odd sizes. The width and height next to each photo can be clicked and typed over.
So one batch can hold several sizes. Set the main size once, then fix the odd ones by hand.
File names work the same way. Click a name and type a new one before you download.
Doing photos one by one is slow. It is also easy to miss one or get a size wrong.
A batch image resizer sets the rule once and uses it on every file. A hundred photos take about as long as one.
Most people bulk resize photos before a shop listing or a trip upload. Any good multiple image resizer saves that time.
You can bulk resize images from a phone, a camera and a scanner together. They do not have to match.
Nothing to install and nothing to sign into. You can resize images in bulk on a work laptop or a phone. Then close the tab.
A browser bulk photo resizer also works when you are not on your own machine. There is no account to log into.
People ask for a bulk image size reducer and mean two different things.
Some want a smaller picture, so fewer pixels across. Some want a smaller file, so fewer KB on disk.
This tool does both, with two controls. Width and height change the picture. The quality slider changes the file. Most jobs need both.
Soft photos almost always mean you asked for a bigger size than the original. Shrinking stays sharp. Growing has to invent pixels.
Check the original size first and stay under it. The other cause is a very low quality setting. Try 80% and look again.
There is no limit. The work happens in your browser, not on a server. Only your device memory sets the cap. Batches of a few hundred are normal.
No. Your files are read on your own device. Nothing is sent to us and nothing is kept. Turn off your internet after the page loads and it still works.
Yes. No charge, no account, no trial and no watermark on your photos.
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