Image Enlarger

What the image enlarger does

It multiplies the width and height of your image by the factor you pick and fills the new pixels by blending the colours of their neighbours. This is called resampling or interpolation. The browser’s smoothing is used in its high-quality mode where the browser supports that setting, so edges come out soft and even rather than blocky.

What it won’t do is add real detail. AI upscalers guess at textures, hair and text that weren’t in the photo. This tool doesn’t guess, which means no made-up faces or strange patterns, but also no miracle for a photo that is already blurry. Think of it as a clean way to get more pixels, not a sharper photo.

How to enlarge an image

1. Drop one image into the box above or click to choose it.
2. Pick a size in the Enlarge menu: 1.5×, 2× (the default), 3× or 4×.
3. Choose a format. Same as original keeps JPG, PNG and WebP, and saves other formats as PNG.
4. For JPG or WebP, set the quality. 90% is the default and a good choice for enlarged photos.
5. The preview updates on its own and shows the new pixel size and file size. Click Download.

The file name tells you the factor, so logo.png enlarged 3 times saves as logo-3x.png.

How big each setting makes your image

Each factor multiplies both sides, so the pixel count grows by the factor squared. 2× gives four times the pixels and 4× gives sixteen times. We tested this in Chrome on 19 October 2026 with a 640 × 421 photo of the Taj Mahal (a 64.5 KB JPG), saving each result as JPG at 90%:

The file grows more slowly than the pixel count. 4× has sixteen times the pixels but only about six times the file size, because the blended pixels are smooth and compress well.

Print width is pixels ÷ DPI. 300 DPI is the usual target for sharp prints, so a 640-pixel-wide photo prints well only up to about 2 inches. Enlarged 4×, it covers 8.5 inches at the same pixel density, though it will look softer than a photo that was shot at that size.

Worked example: a small logo for a printed banner

A shop owner has a 500 × 500 PNG logo from WhatsApp and needs it on a 6-inch-wide flyer. At 300 DPI, 6 inches needs 1,800 pixels. 500 × 3 = 1,500 is not enough, so pick 4×: the logo becomes 2000 × 2000, which covers 6.7 inches at 300 DPI.

Keep the format as PNG so flat colours and transparency stay clean. Then send the 2000 × 2000 file to the printer instead of the original. The edges will be a little soft at close range, but you control the scaling and can check the result before it goes to print, instead of leaving it to the printer’s software.

Resampling or AI upscaling: which to use

For anything official, such as an ID photo or a signature, resampling is the safer choice, because an AI model could change how your face or handwriting looks.

When enlarging helps

• Meeting a minimum size on a form. Some portals reject images below a minimum pixel size or a minimum file size, such as the 20 KB minimum for photos and signatures in the UPSC CAPF (AC) 2026 notice (opens in new tab). Enlarging 1.5× or 2× raises both. Then use the image resizer to set the exact pixels or cap the KB.
• Printing a small picture. Enlarging before you send it lets you see exactly how soft the print will be, and gives the print shop a file that already meets 300 DPI at your size.
• Slides and documents. A small screenshot or chart can look jagged when stretched across a projector screen. Enlarging 2× smooths that out.
• Thumbnails and website images that are slightly too small for a layout. 1.5× is usually enough and keeps the softness hard to notice.

When it won’t help

• Blurry or shaky photos. Blur gets bigger along with everything else. Retake the photo if you can.
• Heavily compressed WhatsApp forwards. The blocky JPG artefacts get enlarged too.
• Pixel art and game sprites. Smoothing blends the sharp pixel edges into fuzz. These need a nearest-neighbour method, which this tool doesn’t offer.
• Screenshots of small text. Letters get wider but not crisper. If you can, take the screenshot again at a larger zoom level.

Tips for the best result

• Crop first, then enlarge. Cutting away what you don’t need with the crop tool keeps the output smaller and lets you enlarge further before hitting browser limits.
• Pick the smallest factor that works. Work out the pixels you need (inches × 300 for print) and choose the first setting that reaches it.
• Use PNG for logos, icons and graphics with flat colours or transparency. Use JPG or WebP at 90% for photos.
• Compress afterwards if needed. A 4× file has sixteen times the pixels and was about six times heavier in our test. The image compressor trims it for email or web use.

Limitations

• Not AI. It resamples, it doesn’t reconstruct detail or remove noise.
• Four fixed factors. 1.5×, 2×, 3× and 4×. For an exact pixel size, use the image resizer, which can also enlarge when you type a bigger width.
• One image at a time. The bulk resizer can enlarge a batch up to 200% with its Percentage mode.
• Browser size limits. iPhones and iPads cap the browser’s drawing canvas at about 4,096 × 4,096 pixels, so 4× of anything wider than about 1,000 pixels may fail there. Desktop browsers allow much more. If a size is too big, the tool says so instead of saving a broken file.
• No sharpening or filter choice. The result is smooth by design.
• Metadata is dropped, and animated GIFs become a single still frame.

Key facts

• The browser setting that controls smoothing quality has three levels (low, medium, high) and does not work in every browser. (MDN (opens in new tab))
• Most browsers allow canvas images above 10,000 × 10,000 pixels, while iOS devices limit them to 4,096 × 4,096. (MDN (opens in new tab))
• UPSC CAPF (AC) 2026 requires the photo to be 20 KB to 200 KB and the signature 20 KB to 100 KB, both in .jpg format. (UPSC (opens in new tab))
• Enlarging by a factor multiplies the pixel count by that factor squared: 2× gives 4 times the pixels, 3× gives 9 times, 4× gives 16 times.