Resize an image to exact pixels or a file size
Change an image's dimensions by pixels, by percentage or with a ready-made preset, and optionally squeeze it under a file size such as 50 KB. When the new size is a different shape, you decide whether to crop, pad or blur the edges, and a live preview shows the result before you save. The image is processed in your browser and never uploaded.
Three ways to set the size
- Pixels for an exact width and height. With Keep proportions ticked, changing one side updates the other.
- Percentage when you simply want something smaller, such as 50% for an email or a web page.
- Presets for common targets: an Instagram post (1080 × 1080) or portrait post (1080 × 1350), a story or reel (1080 × 1920), a YouTube thumbnail (1280 × 720), a link preview image (1200 × 630), a Facebook cover, a profile picture, Full HD, and passport photos at 35 × 45 mm or 2 × 2 inches.
When the new size is a different shape
Turning a landscape photo into a square cannot keep every pixel without distortion, so you choose what gives:
- Crop fills the new shape and trims the overflow. Drag the preview to choose which part stays.
- Pad keeps the whole picture and fills the gaps with a colour you pick.
- Blur keeps the whole picture and fills the gaps with a soft, blurred copy of it, the look most social apps use.
- Stretch forces the exact size and distorts the image. It is there for the rare case you need it.
Fitting under a size limit
Choose a maximum file size and the resizer searches for the best quality that fits. If quality alone is not enough, it also reduces the dimensions a little and tells you what it changed. A size limit needs a lossy format, so PNG images are saved as JPG in this mode. For several photos at once, the image compressor does the same job in batches.
Pixels, DPI and print size
Screens only care about pixels. Print size depends on how many pixels you spread over each inch: printed at 300 pixels per inch, a 35 × 45 mm passport photo needs 413 × 531 pixels, which is exactly what the preset produces. If a form asks for a photo at 300 DPI, what matters is that the pixel dimensions match the print size at that resolution; the DPI number stored in the file is only a label. Making a small image larger never adds detail, so start from the biggest original you have.
Passport and ID photos
The presets give the right size and shape. Use Crop and drag so your face sits in the centre, then set a file size if the application has a limit. Sizing is only one requirement, though: backgrounds, lighting, head position and how recent the photo is are set by each country's rules, so check the official guidance before you submit.
Formats
Save in the original format or switch while you resize. JPG gives the smallest files for photos, PNG is lossless and keeps transparency, and WebP is smaller still where your browser can create it. JPG, PNG, WebP and GIF files open here; iPhone HEIC photos need converting with the image converter first.