Free tool
Image Resizer
Resize a whole shoot at once: to an exact size, a percentage, a longest edge, or a social media or print preset. Built for photographers, so it never enlarges a photo without asking.
Nothing is uploaded. Your photos are resized inside your own browser and never leave your device. No signup, no watermark, no limit on the number of files.
Social media sizes
Platform sizes come from Instagram Help, Meta’s Ads Guide and YouTube Help, checked in October 2026. Platforms change these; check before a big batch.
Print sizes
300 DPI is the usual standard for photo prints; 240 DPI looks the same at normal viewing distance and keeps files smaller. Print sizes are turned to suit each photo, so a landscape photo becomes 6 × 4, not 4 × 6.
Quality applies to JPG and WebP. 90% suits most photos; HEIC photos are saved as JPG unless you choose otherwise.
Drop your photos here
or
JPG, PNG, WebP or HEIC. Add as many as you like; they are resized one at a time.
Good to know
- Photos are resampled at high quality. Large reductions are made in halving steps rather than in one jump, which keeps fine patterns such as fabric, hair and brickwork from turning jagged or rippled.
- Phone photos stay the right way up: the rotation stored in the file is applied before resizing, so “longest edge” and print sizes follow the photo as you see it.
- Resizing re-encodes the picture, so camera metadata (EXIF: date, camera settings, GPS location) is not copied to the new file. To see what a photo carries first, open it in the EXIF viewer.
- Large photos, 48 MP and up, take a few seconds each. They are processed one at a time so that a phone does not run out of memory.
When photographers need to resize
- Web galleries and portfolios. Full-size camera files are far larger than any screen. Resizing by the longest edge gives every photo in a gallery the same size whether it is landscape or portrait, and pages load faster.
- Client proofing. Proofs only need to be big enough to choose from. Smaller files upload and open faster, and a client cannot print a proof as a finished picture.
- Marketplaces and social media. Shops, stock agencies and social platforms state minimum and maximum sizes and sometimes an exact shape. Fill and crop gives every photo exactly the size a platform asks for.
- Print labs. A lab prints from pixels. A print preset at 300 or 240 DPI gives the exact pixel size for the paper and crops to its shape, so the lab does not crop it for you. To check whether a photo has enough pixels for a size, use the print size checker.
Resizing is not cropping
Resizing changes how many pixels a photo has and keeps all of the picture: a 3:2 photo stays 3:2. Cropping cuts away part of the picture to change its shape, for example from 3:2 to a 4:5 Instagram portrait. Only “fill and crop” and the presets crop here, always evenly from the centre; every other mode keeps the whole frame. To see how much of a photo a new shape removes before you crop, use the aspect ratio calculator.
Why this resizer will not enlarge without asking
Enlarging a photo does not add detail. The new pixels are estimated from their neighbours, so edges soften and noise and compression marks grow with the picture. A file that has been enlarged looks bigger on paper but no sharper on the wall. That is why a photo smaller than your target keeps its own size here unless you choose to enlarge it, and the list tells you which photos that affected.
Image resizer
Frequently asked questions
Are my photos uploaded anywhere?
No. Resizing runs in your browser, on your device. The photos are never sent to Pinnacle Edits or to anyone else, and the page keeps working if you go offline after it has loaded.
What size should I resize photos to for the web?
Use the size the platform asks for: gallery services, shops and social networks publish their own limits. For your own website, size photos by the longest edge to about the largest size they are shown at, for example 2048 pixels for a full-screen gallery.
Does resizing reduce quality?
Making a photo smaller removes pixels, but done well it looks the same at the new size. Saving as JPG or WebP compresses it again; at 90% quality that is not visible. Making a photo larger cannot add detail, which is why enlarging is off unless you turn it on.
Which DPI should I choose for prints?
300 DPI is the usual standard for photo prints viewed up close. 240 DPI is enough for most prints at normal viewing distance and makes smaller files. What the lab uses is the pixel size: 4 × 6 inches at 300 DPI is 1200 × 1800 pixels.
Can I resize iPhone HEIC photos?
Yes. HEIC photos are read in the browser and saved as JPG by default, the format labs, galleries and upload forms accept. You can choose PNG or WebP instead.
Will my photos be cropped?
Only if you choose fill and crop or a preset, and then evenly from the centre. Width × height, percentage, longest edge and fit within always keep the whole picture.
Related Services
Open-source notice: HEIC files are decoded with libheif 1.23.5 and libde265 1.0.15, free software licensed under the GNU Lesser General Public License, version 3. They are downloaded as separate, unmodified files only when a HEIC file needs them, and can be replaced with your own build. ZIP files are made with fflate (MIT licence). Licences and source code