Resize images online
Cap the width, scale by a percentage, or set an exact width × height — the box is filled by cropping the center, never by stretching. One setting, the whole batch.
Your images
Settings
Set both for an exact size: the image is center-cropped to fit, never stretched. Set one and the other follows the ratio.
Generated images
- Nothing uploaded
- Free, no sign-up
- Strips EXIF
- Batch files
The request usually arrives as a number. The job board wants a headshot no wider than 1000 px. The client asks for the whole shoot at half size. The slide template has a 1920 × 1080 slot. Those are three different requests, and this page has one control for each of them: a maximum width, percentage shortcuts and an exact width × height box.
Every file in the queue gets the same setting, and the work happens on your own device: the browser decodes each image, redraws it at the new size and writes a new file. The originals on your disk are not modified and nothing is uploaded.
Resizing is also the strongest way to make a file lighter. Weight follows the pixel count, and a 4000 px photo taken down to 2000 px keeps a quarter of its pixels — before the quality slider has been touched.
How it works
Pick the control that matches the request you were given. The three never combine: using one clears the other two.
Add the images
Drag them in, choose them, or paste with Ctrl+V. JPG, PNG, WebP, iPhone HEIC, GIF, BMP and SVG go through the same queue, whether it is one file or a hundred.
Set one resize mode
Type a Max width, tap a shortcut (25%, 50%, 75%, or 1920, 1280 and 800 px), or fill Exact output with a width, a height or both. The Common sizes chips fill both exact fields for you.
Generate and read the card
Click Generate images. Each card shows the original and the new pixel dimensions next to the new file size. Download the files one by one or take the whole batch as a .zip.
Three modes, three different requests
The modes are not points on one scale. Each answers a different kind of instruction, and choosing the right one is most of the job.
| Mode | What it does | Use it for |
|---|---|---|
| Max width (px) | A ceiling. Anything wider is scaled down to that width; anything narrower passes through at its own size. Height follows the original ratio. | Rules like "no wider than 1200 px", web columns, email |
| Shortcuts | 25%, 50% and 75% scale every image to that fraction of its own size. 1920, 1280 and 800 px are one-tap maximum widths. | A uniform batch that has to come out at half size |
| Exact output, one field | A target. Every image comes out at exactly that width (or that height); the other side follows each image's own ratio. | "All thumbnails 400 px wide", including the small ones |
| Exact output, both fields | A box. Every image comes out at exactly that width × height. | Fixed slots: a 1080 × 1080 square, a 1920 × 1080 slide |
An exact box crops the center; it never stretches
With both fields filled, the output always has exactly those dimensions. When the photo has a different shape from the box, the page keeps the largest centered area that matches the box and scales that area. A 4000 × 3000 photo sent to 1080 × 1080 becomes its central 3000 × 3000 square, scaled down: a strip is lost on the left and on the right, and nobody's face goes oval.
The crop is always centered, and no bars are added to pad the image out. If the subject sits off to one side, cut the photo yourself first on Crop image using the same ratio, then bring the result here. A source that already matches the box is only scaled, so the framing you chose is the framing you get.
When the shape of the photo must survive untouched, fill only one field. The width is then exact and the height is whatever the ratio gives.
Common sizes and the ratio behind each one
The chips under Exact output fill both fields with one tap. The last row of the table is not a chip: type it in when a print shop asks for a full page.
Platforms change their specs, so confirm the current numbers in the platform's own help pages before a big batch. And for a site icon in .ico format, Favicon generator is the page that writes that file.
| Width × height | Ratio | What it is |
|---|---|---|
| 1080 × 1080 | 1:1 | Square, the usual size for feed posts and profile tiles |
| 1080 × 1350 | 4:5 | Portrait post, taller than the square at the same width |
| 1920 × 1080 | 16:9 | Full HD frame: slides, wallpapers, video stills |
| 1280 × 720 | 16:9 | HD (720p) frame, common for video thumbnails |
| 800 × 600 | 4:3 | Classic 4:3 frame that older portals and projectors still ask for |
| 512 × 512 | 1:1 | Square icon and avatar size |
| 2480 × 3508 | about 1:1.41 | A4 page at 300 DPI, portrait; swap the numbers for landscape |
Shrinking is safe; enlarging has a cost
Max width and the percentage shortcuts only ever shrink. Type 1920 over a folder where some files are 800 px wide and those files come back at 800 px: nothing is inflated to reach the number.
Exact output is the one mode that can enlarge, because the instruction is literal. A 400 × 300 image sent to 800 × 600 comes out at 800 × 600, and it looks softer than the original: enlarging spreads the same information over four times as many pixels. There is no AI upscaling on this site, so no detail is invented. When the source is too small for the slot, the real fix is a larger original.
Whatever the mode, the longest side of the output stops at 10,000 px. Anything that would go beyond that is scaled down to fit.
What a resized image looks like
The page asks the browser for its high-quality smoothing, so photos come out even rather than stair-stepped. What you will not get is sharpening. Every reduction softens fine detail a little; photographers add a touch of sharpening afterwards, and this tool does not guess that for you.
Screenshots and images with small text are the hard case. Text survives a clean halving far better than an awkward ratio such as 1440 to 1000 px, where letter strokes land between pixels and turn gray. If a resized screenshot looks mushy, try 50% or a width that divides the original evenly.
Open Compare on a card before downloading. The sliding divider is the fastest way to see whether the size you picked still holds the detail you care about.
What this page does not do
- No target in kilobytes. When the form says "under 200 KB", the pages that search for a file size are the right tool, starting with Compress to 200 KB
- No per-image settings: one mode and one set of numbers for the whole queue
- No DPI field. The file your browser writes does not keep the DPI tag of the original; for print, the pixel count is what decides the result
- No free percentage box: the shortcuts are 25, 50 and 75. For anything else, work out the width once and type it
- No camera metadata in the output: GPS position, device model and capture time are dropped when the image is redrawn
Frequently asked questions
What is the difference between Max width and an exact width?
Max width is a ceiling: it shrinks what is wider and leaves narrower images alone. An exact width is a target: every image comes out at that width, including the ones that were narrower, which get enlarged.
Will my photo be distorted if I set both width and height?
No. The output has exactly the size you typed, and the page fills it with the largest centered area of the photo that has the same shape. Part of the image is cut off at the sides or at the top and bottom; nothing is squeezed.
Can I choose which part of the photo is kept?
Not on this page, where the crop is always centered. Cut the photo first on Crop image with the same ratio as your box, then resize the result: a source that already has the right shape is only scaled.
Can I make a small image bigger?
Only through Exact output, and with a cost: the result has more pixels but no more detail, so it looks softer. Max width and the percentage shortcuts never enlarge anything.
How do I resize to a percentage that is not 25, 50 or 75?
Do the arithmetic once and type the result. For 40% of a 3000 px photo, put 1200 in the width field of Exact output and leave the height empty; the height follows the ratio.
Does resizing change the file format?
On Auto, a JPG stays JPG, a PNG stays PNG and a WebP stays WebP. HEIC and BMP come back as JPG, SVG and GIF as PNG, and an animated GIF keeps only its first frame. Pick a format in the panel if you want something else.
Can each image in the batch get a different size?
No. One setting applies to everything in the queue when you click Generate. For two sizes, run the batch twice: generate and download the first, change the numbers, then click Generate again.
How many pixels do I need to print an A4 page?
At 300 DPI, 2480 × 3508 px in portrait or 3508 × 2480 px in landscape. Type both numbers in Exact output. If your photo has fewer pixels than that, it will be enlarged and print softer than a larger original would.