Free DPI Converter: Change DPI of Image Online

How to Increase DPI of Image in 4 Easy Steps

Whether you call it a DPI changer, a DPI increaser or a 300 DPI converter, the process is the same. Here’s how to increase image DPI (or lower it) with our tool:

1. Upload your image: Drag and drop it into the box above, or click to browse. JPG, JPEG, PNG, WEBP and BMP files all work, and you can add several at once.
2. Choose your target DPI: Pick 72, 150, 300 or 600 DPI from the list, or select “Custom” and type in any number you like.
3. Pick an output format: Keep the original format, or switch to JPG, PNG, WEBP or BMP while you’re at it.
4. Convert and download: Hit “Convert DPI” and save your new file. Converting a batch? Grab them all in one go.

That’s all there is to it. You can increase DPI of image free of charge, as often as you like, with no accounts and no daily limits. The same four steps work whether you want to know how to increase photo DPI, how to change picture DPI or how to change image DPI on any device.

How to Change DPI of Image Files (JPG, PNG and More)

Our image DPI converter works with JPG, JPEG, PNG, WEBP and BMP files. So if you’re wondering how to change the DPI of an image you took on your phone, a scanned document or a logo, the answer is the same: upload it, choose a number and convert.

You can change image DPI up or down. Need to change photo DPI for a print shop? Pick 300. Want to change picture DPI for a website? 72 is perfect. You can even adjust image DPI to an unusual value like 480 DPI or 200 DPI with the Custom option.

Most people use this tool to convert image to 300 DPI, but it’s just as handy when you need to make image 150 DPI for home printing, or 600 DPI for fine art and detailed scans.

What Is DPI, Anyway?

DPI stands for dots per inch. It tells a printer how many tiny dots of ink to place in each inch of paper. The higher the DPI, the more tightly packed those dots are, and the sharper and smoother your print looks.

Every digital image carries a small DPI value tucked inside its file information. Printers and design apps read this number to work out how big the picture should print. So when people ask how to change dots per inch on a photo, what they really want is to change this DPI value, and that’s exactly what our tool does.

You’ll also hear the term PPI (pixels per inch). Strictly speaking, PPI describes pixels on a screen and DPI describes ink dots on paper, but most people and most software use the two interchangeably. If someone asks for 300 PPI, they almost always mean 300 DPI, which is why our tool also works as a simple PPI DPI converter.

Which DPI Should You Use?

The right DPI depends on where your image is going to end up. Here’s a quick guide to the most common settings:

DPI	Best for	Why
72 DPI	Websites, social media and email	The classic screen standard. Small, fast-loading files.
96 DPI	Windows screens and Office documents	The default for many Windows apps and screenshots.
150 DPI	Home printing, drafts and flyers	A nice middle ground: decent prints without huge files.
200 DPI	Posters and banners	Looks great on prints viewed from a few feet away.
300 DPI	Photos, books, business cards and pro printing	The print industry standard and the most requested setting.
600 DPI	Fine art prints, line art and archival scans	Extra-crisp detail for text, sketches and high-end printing.

You’ll often see these written without a space too, like 72dpi, 150dpi, 300dpi or 600dpi, and some forms ask for “DPI 300” or “DPI 150” instead. It’s all the same thing.

Not sure which one to pick: Go with 300 DPI. It’s what nearly every printer, publisher and print-on-demand site expects.

How to Convert Image to 300 DPI for Printing

300 DPI resolution is the print standard, and for good reason. At 300 dots per inch, the human eye can’t pick out individual dots, so photos, text and fine lines all look clean and professional on paper.

To convert to 300 DPI, upload your file above, choose “300 DPI” and click convert. Whether it’s a JPG to 300 DPI, a scanned page or a photo from your phone, you’ll get a 300 DPI image that’s ready for the print shop.

Many people also ask how to make an image 300 DPI without losing quality. The good news is you don’t lose anything: we simply change image to 300 DPI in the file’s information, so your 300 DPI picture looks exactly like the original.

Here’s a handy tip: make sure your image has enough pixels for the size you want to print. At 300 DPI you’ll need roughly:

• 4 × 6 inch photo: 1200 × 1800 pixels
• 5 × 7 inch photo: 1500 × 2100 pixels
• 8 × 10 inch print: 2400 × 3000 pixels
• A4 page: 2480 × 3508 pixels

If your picture has fewer pixels than this, it will still be 300 DPI, it’ll just print at a smaller size. The quick maths: divide the pixel width by 300 and you’ll get the print width in inches. So the next time a printer asks for a DPI 300 resolution file, you’ll know exactly what to do.

Does Changing DPI Increase Image Resolution?

This is the question we hear most, so here’s the honest answer: changing the DPI on its own doesn’t add new detail to a photo. A 1000 × 1000 pixel image still has 1000 × 1000 pixels whether it’s set to 72 DPI or 600 DPI. What changes is the print size and the DPI value that printers and design software read.

And most of the time, that’s exactly what you need. Print shops, publishers, Etsy and print-on-demand sellers, and many job or government application forms simply want the file to say 300 DPI. Our tool does just that, without touching a single pixel or lowering the quality.

But if you’re really asking how to make image higher resolution, or how to raise the resolution of an image, you’ll need an image upscaler that adds extra pixels. Plenty of sites let you increase resolution of image online (many let you increase image resolution online free), and some even call themselves an image DPI upscaler. Just keep in mind that no tool can fully rescue a tiny, blurry photo, so always start with the largest original you have.

So how do you increase DPI and get a sharper print at the same time? The best way to upscale image to 300 DPI is in two steps: first add pixels with an upscaler, then set the final DPI here.

Why People Love Our DPI Changer

• 100% free: No hidden fees, no sign-up and no watermarks. A DPI converter free for everyone, forever.
• Private by design: Your images are processed right in your browser and never uploaded to a server.
• No quality loss: A DPI change only edits the file information, not your pixels, so your photo looks exactly the same.
• Batch conversion: Enhance DPI for a whole set of pictures at once and download them together.
• Any DPI you need: Use it as an image DPI increaser for print, or lower the DPI for the web. 72, 150, 300, 600 or any custom value.
• Works on any device: It’s a DPI converter online, so it runs on Windows, Mac, Android, iPhone or Chromebook.

Other Ways to Change the DPI of a Picture

Our online DPI converter is the quickest way, but if you’d like to learn how to change a picture’s DPI in software you already use, here’s how to change DPI on a picture in popular apps:

• Photoshop: Go to Image › Image Size, untick “Resample”, type in your new resolution and click OK.
• GIMP (free): Open Image › Print Size, enter the new X and Y resolution, then export your image.
• Mac Preview: Choose Tools › Adjust Size, untick “Resample image” and change the resolution.
• Phone: Most phones don’t have a built-in DPI setting, so the easiest way to learn how to change photo DPI on a phone is simply to open DPI Increase in your mobile browser and convert it right there.

Want to double-check the result: Use our free Image DPI Checker to see the exact DPI and pixel size of any picture.

Ready to get started? Scroll back up, drop in your image and you’ll have a print-ready file in seconds.

Frequently Asked Questions

How do I change the DPI of an image for free?

Upload your picture to the DPI Increase tool at the top of this page, choose the DPI you need and click “Convert DPI”. It’s free, works online and only takes a few seconds.

How do you change the DPI of a picture?

Open our DPI converter, drop in your picture, select the new DPI and download it. You can also use Photoshop, GIMP or Mac Preview, but our tool is the fastest way and needs no software.

How do you change the DPI of a photo on a phone?

Open this page in your phone’s browser, tap the upload box, choose your photo and pick a DPI. It works on both Android and iPhone, with no app to install.

How do I increase the DPI of an image?

Upload it, choose a higher DPI such as 300 or 600, and convert. That’s how to increase the DPI of an image in a few seconds. The same steps show you how to increase DPI of a picture, a scan or a logo.

How do you increase the DPI of an image without losing quality?

Use a tool that only changes the DPI value, like ours. Your pixels stay the same, so there’s zero quality loss. If you need more detail as well, upscale the image first and then set the DPI.

How do I change DPI to 300?

Select “300 DPI” in the Target DPI box, click convert and download the file. Your image will be saved at 300 DPI and ready for printing.

Can I convert photo to 300 DPI for print-on-demand sites?

Yes. Many sellers use our tool to convert photo to 300 DPI and create 300 DPI image files for Etsy, Redbubble and other print shops. If you’ve been searching how to convert image to 300 DPI, this is the quickest way.

How can I change DPI of an image without Photoshop?

Just use DPI Increase. It runs in your browser, so you can change DPI of photo files, scans and graphics without buying or installing any software. That’s how to change DPI of an image the easy way.

Will changing the DPI reduce the quality of my photo?

No. Our tool only changes the DPI value stored in the file. Your pixels stay exactly as they were, so the photo looks identical.

Can I increase the DPI of a JPG or PNG?

Yes. Whether you want to increase DPI of picture files or improve DPI of image scans, the tool works with JPG, JPEG, PNG, WEBP and BMP, and you can even switch to a different format during conversion.

Is 72 DPI or 300 DPI better?

It depends on where the image is going. 72 DPI is perfect for websites and social media, while 300 DPI is the standard for anything you plan to print.

Are my images safe?

Yes. All the conversion happens inside your own browser. Your files are never uploaded, stored or shared with anyone.

What’s the difference between DPI and PPI?

DPI (dots per inch) refers to ink dots on printed paper, while PPI (pixels per inch) refers to pixels on a screen. In everyday use they mean the same thing, and print shops accept either term.