What should you do if your photos’ resolution is too low for printing ?

You’ve selected your best photos, the ones that deserve to be printed, framed or given as gifts. But when you go to place your order, a warning message appears: resolution too low. Or worse, you receive your print and the image is blurry, pixelated and disappointing.

It’s a frustrating yet very common situation. Most people don’t realise that a photo that looks perfect on screen can produce a mediocre result when printed. The two mediums simply don’t follow the same technical rules.

The good news is that there are practical solutions. Depending on the photo, its source and the desired print format, it is often possible to improve the situation, or even correct it completely. However, you still need to understand what is actually happening and know what to do.

What is the best photo resolution for printing?

The benchmark in the world of printing is 300 DPI. At this resolution, the human eye can no longer perceive individual dots. The result is sharp, the colours are true to life and the details are preserved.

Below 300 DPI, the quality begins to deteriorate. At 150 DPI, the result remains acceptable for large formats viewed from a distance. Below 100 DPI, pixelation becomes visible to the naked eye, even on small formats.

Let’s take a fairly concrete example. A photo taken with a recent smartphone is often between 12 and 50 megapixels. This corresponds to a resolution that is more than sufficient for large-format printing. On the other hand, a photo taken from a social media platform, compressed and reduced during the download, may be only a few hundred pixels wide. On a 10x15 cm print, this might still be acceptable. On a 50x70 cm poster, it’s a different story.

The ideal resolution therefore always depends on two combined factors: the image size in pixels and the desired print format.

What resolution should photos have for printing?

There is no single answer, and this is precisely where many people go wrong. The required resolution varies depending on the format of the product ordered.

Here are a few practical guidelines: for a photo print 10x15 cm, an image of 1200 x 1800 pixels is sufficient to achieve 300 DPI. This is often the case with photos taken on a smartphone, even an entry-level model.

Next, for a photo poster 50x70 cm, you need 5900 x 8300 pixels to achieve 300 DPI. Few amateur photos reach this threshold. But rest assured, for this type of large format, a resolution of 150 DPI may be sufficient. This is because it is generally viewed from a distance of over a metre. This brings the requirement down to around 2950 x 4150 pixels, which is much more achievable.

The rule to remember is very simple. The larger the format, the more pixels you need. And the closer you look at the print, the more the resolution matters.

Is it possible to fix a low-resolution photo?

You’ve probably asked yourself this question after receiving a warning about insufficient resolution. And to answer you honestly, it depends. In some cases, yes, you can significantly improve a low-resolution image. In others, the damage is too severe and no tool will be able to recreate details that never existed in the file.

What you need to understand is that increasing a photo’s resolution does not mean magically recovering lost information. Modern tools, particularly those based on artificial intelligence, are making impressive progress. But they always work from what is already present in the image. They don’t create pixels; they intelligently guess them.

Let’s look at what you can actually do.

How can I increase the resolution of a photo?

The simplest method is upscaling. In practical terms, software adds pixels between the existing ones by calculating the intermediate colours. This is known as interpolation.

Photoshop has been doing this for years via the ‘Image Size’ function. Lightroom does it too. These tools allow you to mechanically increase the number of pixels in an image. But be careful! This method alone does not create additional detail. It simply makes the image technically larger, without necessarily improving it visually.

To take it a step further, specialised tools such as Topaz Gigapixel AI, Adobe Enhance and Remini use artificial intelligence to analyse the image and reconstruct plausible details. These solutions deliver results far superior to simple interpolation, particularly on portraits or scenes with repetitive textures.

How can you improve the quality of a photo for printing?

Increasing the resolution is one thing. But the overall quality of a photo for printing also depends on other adjustments.

Sharpness, first of all. A slightly blurred photo can be improved with a sharpening filter, provided you don’t overdo it. Too much sharpening creates unsightly halos around edges and gives the digital processing away.

Next, exposure and contrast. An underexposed or very flat image can look dull once printed. Printers lack the brightness of a backlit screen. What looks vibrant on your phone may appear washed-out on paper. It is therefore often worth slightly increasing the brightness and contrast before sending your file.

Finally, let’s move on to colours. The colour space plays a vital role. Most digital photos are in sRGB mode, which is well suited to standard printing. If your photo is in Adobe RGB or ProPhoto RGB, check that your file is properly converted to sRGB before sending it, otherwise you risk having colours that are off in the final print. Overall, before printing, you must first and foremost consider resolution, cropping and colour management.

Free tools such as GIMP or Canva Pro allow you to make these adjustments without needing to be an expert in Photoshop. Even mobile apps such as Snapseed or Lightroom Mobile offer sufficient settings to prepare a photo correctly for printing.

How do you convert a low-resolution photo into a high-resolution one?

Technically, this is what the AI-powered upscaling tools mentioned above do. But converting a low-resolution image to high resolution warrants a clear explanation of what this actually entails.

Converting does not mean transforming. An AI tool will analyse your image pixel by pixel, compare texture and colour areas with millions of reference images, and then produce an enlarged and enhanced version. The result can be stunning on some photos. On others, particularly highly compressed images or those taken in poor lighting conditions, the improvements remain limited.

The best options available today are Topaz Gigapixel AI (paid, high-performance), Let’s Enhance (online, accessible without installation) and Adobe Firefly Enhance, integrated into Photoshop. These tools allow you to increase an image’s resolution by a factor of 2, 4, or even 8 in some cases.

Conversion is therefore possible and often useful. But it has its limitations, and it’s best to be aware of them before placing an order for large-format printing.

Preparing your photos for a successful print with AgfaPhoto Print

You’ve edited your images, checked their resolution and are ready to place your order. Before clicking ‘order’, there are a few simple steps to follow. It’s often the final details that make the difference between a print that disappoints and one you’re proud of.

Each medium has its own technical constraints. A large-format poster isn’t prepared in the same way as a photo book or a canvas print. Knowing these specifics in advance helps you avoid unpleasant surprises when you receive your order.

Preparing your photos for successful printing

Preparing a photo for printing begins long before you choose the medium. It starts the moment you select your file.

The first rule to follow is to always work from the original file, never from a compressed copy shared on WhatsApp or downloaded from Instagram. Social media platforms automatically reduce image size to lighten the load on their servers. A photo sent via messaging can lose up to 80% of its data. The original file, however, retains all the pixels captured by the camera. If, for example, you want to create a landscape photo book, use the original files instead; the quality will be much better.

The second important point is to check the file format. JPEG is the most common and works very well for printing, provided the compression hasn’t been too aggressive. If you have RAW or TIFF files, these uncompressed formats are even better for preserving fine details.

Third and final point: stick to the sRGB colour space. This is the standard used by the vast majority of photo labs. If your editing software allows you to choose the colour space when exporting, always opt for sRGB.

And don’t forget: if you’ve made any edits, always export your image in high quality. In Photoshop or Lightroom, the JPEG quality slider should be set to 90 or 100. Below this, compression begins to degrade fine details and solid colour areas.

Choosing the right format for printing your photos

Choosing the right format also means adapting your ambitions to the file you have in hand. An 8-megapixel photo can easily be printed at 20x30 cm with impeccable results. Wanting to turn it into a framed poster measuring 100x70 cm, for example, is taking a real risk.

At AgfaPhoto Print, the online configurator tells you whether your photo’s resolution is sufficient for the chosen format. It’s a valuable safeguard. If a warning appears, don’t ignore it. Take the time to check whether a larger version of the file exists, or whether the print size can be reduced.

It’s better to order a crisp 30x40 cm print than a blurry 60x80 cm poster. The quality of the result depends as much on the choice of format as on the quality of the file itself.

What to bear in mind before printing

A photo resolution that’s too low for printing isn’t a foregone conclusion. It’s often a problem that can be anticipated, worked around, or even corrected with the right tools.

If your photo really lacks resolution, AI-powered upscaling tools can make a real difference. They don’t work miracles, but they often improve the quality enough to make printing a viable option.

Finally, each medium has its own rules. A paper print, a poster, a canvas or a photo book do not react in the same way to a low resolution. Understanding these nuances means making informed choices and receiving prints you’ll be truly satisfied with.

At AgfaPhoto Print, our online ordering tools are designed to guide you every step of the way. Resolution alerts, templates and built-in advice are there to help you order with confidence, whatever medium you choose. Because a beautiful photo deserves a beautiful print.