How it works
- Drop your images or a folder.
- Choose the longest edge: 3840, 2000 or 1080 pixels.
- Apply it and download a file or a ZIP that keeps your folder structure.
Why resize by the longest edge
A folder usually mixes portrait and landscape photos. Setting a single width would make portraits far taller than landscapes. Limiting the longest edge gives every image the same maximum size, whatever its orientation, and proportions never change.
Which size to choose
3840 pixels suits 4K screens and large displays. 2000 pixels suits most full-width website images. 1080 pixels suits social media and email. Reducing dimensions usually saves more weight than lowering quality, because the file holds far fewer pixels.
Small images stay as they are
The longest edge is a maximum. An image already smaller keeps its dimensions, because enlarging it would add blur rather than detail.
Questions
Can I resize many images at once?
Yes. Drop several files or a whole folder. Sub-folders are kept in the output. Free batches hold up to 10 images.
Will my images be distorted?
No. Width and height shrink together, so the proportions stay the same. To change the shape, use the aspect ratio tool.
Does it upscale small images?
No. A maximum dimension only ever shrinks images.
Can I also set a maximum file size?
Yes. Switch the goal to Exact size and the longest edge still applies, so you can limit both dimensions and weight.
Are my images uploaded?
No. The image is decoded and processed by your browser, on your device. FolderPix has no upload endpoint at all, and the site tells browsers to refuse connections to other servers. You can check it in the Network tab of your browser’s developer tools, or by going offline once the page has loaded.
More tools
Film grain
Give a whole series the same analog texture, at full resolution.
Aspect ratio
Crop or extend images to 1:1, 4:5, 9:16 and more, in one pass.
Compress
Reach an exact file size in KB or MB, on one image or a folder.
Convert
HEIC to JPG, WebP to PNG and more, without leaving your browser.
Recipes
Chain ratio, grain and compression into one step, for a whole folder. Pro.