Enlarge a photo for printing without the blocky, blurry look of a plain stretch.
Upscale an image by a scale factor or straight to a print size, compare the result with the original side by side and download a sharper, larger file. This image upscaler runs entirely in your browser: your picture is never uploaded, there is no watermark and no sign-up.
Want to print the enlarged picture across several sheets? Use the Image to Poster tool to split it into pages you can print at home and assemble on the wall.
Three steps, a few seconds each.
Drop a JPG, PNG or WebP file into the upscaler. It is decoded and processed on your own device.
Pick 2×, 3× or 4×, or choose a print size such as A3 or 18 × 24" and a print quality of 150 or 300 DPI. Set the sharpening level and check the before/after view.
Save the upscaled image as JPG, PNG or WebP. In print-size mode the target resolution is written into the file, so it opens at the right physical size.
A print shop or photo kiosk asks for 300 DPI and your photo falls short. Upscaling the image to the exact pixel size avoids the printer's own, usually cruder, resizing.
Scans, early digital camera shots and pictures saved from messaging apps are often only 1–2 megapixels. Smooth enlargement makes them presentable at frame sizes.
Flat colours and hard edges respond very well to sharpening, so a small logo or screenshot stays crisp at two or three times its size.
Some print services, marketplaces and design tools reject images below a minimum width. Upscaling gets the file over the line in one step.
Cut a single face or detail out of a group shot and it may be only a few hundred pixels wide. Upscale the image 2× or 3× so the crop holds up on a slide, a card or a small print.
New pixels are calculated from their neighbours. Fine textures, faces in a crowd or blurred text that are missing from the original will not appear in the enlargement.
The image grows in steps of at most 2× so edges stay tight, then an unsharp mask restores the contrast that enlarging softens. No guessing, no made-up content.
Compared with the single resize most apps and printers apply, the result shows fewer jagged edges and less mush. The before/after slider shows exactly how much.
Output is limited to about 16 megapixels so it works on phones too. That is enough for a photo-quality A3, a sharp A2 or an A1 poster seen from across a room.
Print resolution, measured in DPI (dots per inch), is how many image pixels land on each printed inch. Divide the pixel width by that number and you get the print width: a 3000 px wide photo prints 10 inches (25 cm) wide at 300, or 20 inches (51 cm) at 150.
Photo-quality prints and anything held in the hand are usually made at 300 DPI. Posters are seen from a metre or more away, where half that pixel density looks just as crisp, and very large prints often get away with about 100.
A photo-quality A4 needs 2480 × 3508 px; an A4 poster viewed from a distance needs only 1240 × 1754 px. At poster quality, A3 needs 1754 × 2480 px and A2 needs 2480 × 3508 px. A typical 12-megapixel phone photo (4000 × 3000 px) already covers a photo-quality A4 or a poster-quality A2, so you only need to upscale the image for bigger formats or smaller sources.
Factor mode is the quick choice when you simply want a bigger file for a slide, a web banner or a design layout. Print-size mode works backwards from the paper: choose A4 to A0 or a US size such as 24 × 36", pick photo or poster quality, and the upscaler calculates exactly how many pixels the image needs.
Enlarging always softens edges a little, so the image upscaler applies an unsharp mask after resizing. Medium suits most photos. Use High for logos, text and line art, Low for portraits and skin, and Off when the source is noisy or heavily compressed, because sharpening also makes JPEG artefacts more visible.
If your photo already reaches the chosen print quality at the target size, the tool tells you so — enlarging further adds file size, not sharpness.
Decide how big the finished print should be first, then upscale the image to exactly that size. Going bigger than you will ever print only makes the file heavier and slower to send to a print shop.
Not sure which size fits your wall or frame? The poster size calculator lists every standard poster format with the pixels and sheets it needs.
Yes. There is no charge, no watermark, no sign-up and no limit on how many images you enlarge.
No. The image is decoded, enlarged, sharpened and saved entirely in your browser. Nothing is sent anywhere, so it also works with private photos.
No. It uses step-by-step interpolation and sharpening, which never adds content that was not in your photo. The result is faithful to the original, just larger and crisper than a simple resize.
Up to 4×, as long as the result stays within about 16 megapixels. 2× is the sweet spot for most photos; 3× and 4× work best for graphics, logos and images that will be viewed from a distance.
Around 150 DPI is enough for posters viewed from a metre or more away; use 300 for photos and small prints viewed up close. Pick the size and quality in print-size mode and the tool works out the pixels.
Switch to print-size mode and choose the paper or poster size, from A4 up to A0 or a US format such as 18 × 24". Pick photo or poster quality, check the before/after preview, then download. The upscaler writes the target resolution into the JPG or PNG, so the print shop sees the right physical size.
Yes, crop first. Upscaling enlarges every pixel you keep, so trimming unwanted edges beforehand spends the output size on the part you will actually print. If you need a fixed shape such as 4:5 or an A-series ratio, crop to it in the image resizer, then upscale the result here.
Only partly. Sharpening makes soft edges look crisper, but motion blur, focus problems and heavy compression cannot be undone, because the missing detail is not in the file.
JPG for photos and the smallest files, PNG for logos, screenshots and graphics with flat colours, WebP for the web. JPG and PNG files from print-size mode carry the DPI in their header.
Yes. The upscaler runs in any modern mobile browser. The 16-megapixel limit is there precisely so that iPhones and Android phones can handle the result.
The upscaler handles one image at a time, so you can check the before/after preview and choose the right sharpening for each photo. Each one takes only seconds, and because nothing is uploaded there is no queue and no waiting for a server.