Pixels or percentage
Type an exact width and height, or scale every file to a percentage of its original size. Leave one field empty and only that side is constrained.
Set an exact width and height, or scale by percentage
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Image tools · runs in your browser
A width in pixels, a height, or a percentage of the original. Up to 30 images at once, each fitted inside the same box, downloaded as one ZIP — and none of it leaves your browser.
Exact dimensions for any form, website or print, for one photo or a whole batch.
Type an exact width and height, or scale every file to a percentage of its original size. Leave one field empty and only that side is constrained.
With the aspect ratio locked, width × height means fit inside that box: a landscape shot gets the width, a portrait gets the height, and nothing ends up squashed.
Don't enlarge is on by default, because scaling up adds softness rather than detail. When you truly need a bigger picture, the AI upscaler is one click away.
A JPG stays a JPG, a PNG stays a PNG and a WebP stays a WebP. Only the width and height change, and the picture is redrawn once at high quality.
Resize a set of product photos or screenshots to identical dimensions in a single run, then download them together.
For print, aim for about 300 pixels per printed inch: a 4 × 6 inch print wants roughly 1200 × 1800. The table below lists the usual targets.
| Going to | Size | Notes |
|---|---|---|
| Instagram post | 1080 wide | 1080 × 1350 for a portrait post |
| Link preview / OG card | 1200 × 630 | Crop to 1.91:1 first if the shape is off |
| Full-width web image | 1920 wide | 2560 if the page serves 2× screens |
| Email or chat | 1200 wide | Then compress — most of the saving is there |
| 4 × 6 inch print | 1200 × 1800 | 300 pixels per printed inch |
| A4 print | 2480 × 3508 | Also 300 ppi |
Three things this tool does on purpose: it fits pictures inside the box, it will not enlarge unless you ask, and it works at 300 pixels per inch for print. Here is who else does it the same way.
With Keep aspect ratio on, each picture shrinks until it fits inside the width and height you typed, and its shape never changes. Browsers follow the same rule, called contain, so a mixed batch comes back with some pictures narrower or shorter than the box and none of them stretched.
“The replaced content is scaled to maintain its aspect ratio while fitting within the element's content box.”Making a picture bigger only spreads the pixels it already has. The detail was never captured, so resizing cannot bring it back. That is why Don't enlarge starts switched on, and why a real enlargement goes to the AI upscaler instead.
“This is a very challenging task that requires recovering information that is not available on the low resolution image.”Every print size in the table is worked out at 300 pixels per printed inch, the figure Adobe's Photoshop help gives for sharp prints. That is where 1200 × 1800 for a 4 × 6 inch print comes from.
“A resolution of 300 pixels per inch (ppi) is considered the industry standard for producing high-quality prints.”Six everyday jobs, the dimensions each one asks for, and how to get there. Every number links to the platform's own help page.
The Chrome Web Store takes up to five screenshots at 1280 × 800 or 640 × 400 px and downscales all of them to 640 × 400. A capture from a high-density laptop screen is rarely either size.
How it helps
Add all five, type Width 1280 and Height 800 with Keep aspect ratio on. Captures that are already 16:10 land exactly on 1280 × 800; any other shape fits inside that box, so crop those first.
Google Business Profile photos look best as a JPG or PNG between 10 KB and 5 MB, at a recommended 720 × 720 px. A batch of full-resolution phone shots of the shop and the menu can go past 5 MB.
How it helps
Leave Width empty and set Height to 720: every landscape shot comes out at least 720 px on both sides and far below 5 MB, still a JPG. For portrait shots, set Width to 720 instead. Up to 30 per run.
Kindle Direct Publishing gives 2,560 px tall by 1,600 px wide as the ideal ebook cover, a 1.6:1 ratio, as a JPEG or TIFF, and says a cover that misses its specifications may not be approved.
How it helps
Type Width 1600 and Height 2560. A cover already drawn at 1.6:1 lands exactly on that size and stays a JPG; any other shape fits inside the box, so crop it to shape first. Don't enlarge stops a small file being blown up.
The Canvas learning platform centers and resizes a course card image to 262 × 146 px, and warns that images larger than 10 MB will not display correctly. A full-size photo from a camera can be well over that.
How it helps
Set Width to 800 and leave Height empty. That is about three times the card's width, so it stays sharp on high-density screens, and the file drops far below 10 MB. Don't enlarge leaves smaller images as they are.
Slack says custom emoji work best as square images under 128 KB with a transparent background. A company logo exported for print or a slide deck is usually far heavier than that.
How it helps
Type 128 for Width and Height. A square PNG logo comes back at 128 × 128 px, still a PNG with its transparency, and well under 128 KB. If the logo isn't square, crop it to 1:1 first.
eBay's photo uploader takes images up to 12 MB each, asks for at least 500 × 500 px and recommends about 1600 × 1600. Full-resolution files from a modern camera can be bigger than the uploader accepts.
How it helps
Type 1600 in both boxes with Keep aspect ratio on. Every photo fits inside 1600 × 1600 without stretching and comes back far under 12 MB, while Don't enlarge leaves smaller ones alone. Up to 30 photos per run.
It depends where it is going: 1080 px wide for an Instagram post, 1200 × 630 for a link preview card, 1920 wide for a full-screen web image, and for print about 300 pixels per inch of the printed size — so a 4 × 6 inch print wants roughly 1200 × 1800.
By default, yes: with the lock on, width × height means fit inside that box, so a batch of mixed shapes is never stretched. Turn the lock off to set both axes exactly.
You can, but resizing never adds detail — the file gets bigger and the picture does not get sharper. For a genuine enlargement use the AI upscaler, which invents the missing pixels.
Up to 30 in one batch, each fitted inside the same box, downloaded as one ZIP.
No. Resizing happens in your browser and the result is written straight to your downloads folder.