Start by matching the photo to what you need it for

The right photo depends entirely on where it will be used. A portrait that works for a LinkedIn profile will fail on a dating app. A food photo that looks good on Instagram may not work for a restaurant menu. Before you pick or take a photo, decide what job it needs to do — that one choice eliminates most of your options when ready.

The second step is to check the technical requirements of the platform or print job. Different places need different dimensions, file formats, and file sizes. A photo that looks sharp on your phone screen may be too small for a printed poster. A high-resolution image that's perfect for printing will be rejected by some websites because the file is too large to upload. Knowing these limits before you start searching saves time and frustration.

Key Takeaways

  • Match the photo's style and content to its purpose — a professional headshot, casual social media post, or product image each need different things.
  • Check the exact dimensions, file format (JPG, PNG, etc.), and maximum file size required by the platform or printer before you choose.
  • For portraits, look for even lighting on the face, a clean background, and an expression that matches the context where the photo will appear.
  • For product or food photos, choose images with clear focus on the main subject, good color accuracy, and minimal distracting elements in the background.
  • Free stock photo sites like Unsplash and Pexels work for many purposes, but always check the license terms before using a photo commercially.

Portraits and headshots: what to look for

A portrait photo needs to show the person clearly and in a way that matches where it will be seen. For professional use — a LinkedIn profile, company website, or business card — choose a photo where the person is looking directly at the camera, the face is well-lit without harsh shadows, and the background is plain or blurred. The person's expression should be neutral or slightly smiling, and their clothing should match the industry (formal for law or finance, business casual for most office work, creative for design or media).

For casual use on social media or dating apps, the rules are looser. A candid photo where the person is smiling naturally, or a photo taken outdoors with natural light, often works better than a stiff studio portrait. The background can be more interesting — a park, a street, a home setting — as long as it does not distract from the person's face. Avoid photos where the person is wearing sunglasses, a hat that shadows the face, or is too far away to see their expression clearly.

Check that the photo is in focus on the eyes and face. A blurry portrait is unusable no matter how good the lighting or expression. If you are choosing from multiple photos of the same person, compare them side by side on a full-size screen, not just on a phone, because small screens hide focus problems.

Product and food photos: focus and color matter most

A product photo needs to show what the item actually looks like. The main object should be in sharp focus and take up most of the frame — not tiny and lost in a busy background. The lighting should be bright enough to see details and colors accurately. Avoid photos taken in dim indoor light or with a flash that creates harsh shadows, because both make the product look worse than it is in person.

For food photos, the same rules explore: sharp focus on the dish, good lighting that shows the colors and texture, and a straightforward background that does not compete for attention. A photo of a burger shot from the side so you can see the layers works better than a flat overhead shot. A photo of a salad where you can see the individual ingredients and colors is more appealing than one where everything looks like a brown pile.

Color accuracy is critical for product and food photos. If you are choosing between two photos of the same item, pick the one where the colors look closest to what you see in person. A photo that makes red look orange or makes white look yellow will disappoint customers or viewers who see the real thing later. If you are taking your own photos, shoot in natural daylight or with a daylight-balanced light source, and avoid shooting under yellow indoor lights or in shade that makes everything look blue.

Understanding file format and size requirements

Different platforms and printers accept different file formats. Most websites and social media sites accept JPG (also written JPEG) files, which are smaller and load faster. PNG files are larger but preserve more detail and allow transparent backgrounds, which some platforms need. TIFF files are used mainly for professional printing. Before you choose a photo, check what format the platform or printer requires — this information is usually in the upload instructions or technical specifications.

File size matters because websites and apps have upload limits. A photo that is 5 megabytes might be rejected by a site that has a 2-megabyte limit. If you have a photo that is too large, you can compress it using free tools like Squoosh (squoosh.app) or TinyPNG (tinypng.com), which reduce file size without making the photo look noticeably worse on screen. For printing, file size is less important than resolution — a printer needs at least 300 dots per inch (DPI) to produce a sharp print, while a website only needs 72 DPI.

Dimensions and aspect ratios for different uses

Aspect ratio is the relationship between a photo's width and height. A square photo (1:1 ratio) works for Instagram posts and profile pictures. A wide rectangle (16:9 ratio) works for website headers and YouTube thumbnails. A tall rectangle (9:16 ratio) works for phone screens and Instagram Stories. If you choose a photo with the wrong aspect ratio, you will either have to crop it (cutting off parts of the image) or add blank space around it (which looks unprofessional).

Check the exact dimensions required before you choose. A LinkedIn profile picture needs to be at least 400 by 400 pixels. A Facebook cover photo needs to be 820 by 312 pixels. A printed 4-by-6-inch photo needs to be at least 1200 by 1800 pixels at 300 DPI. If you are unsure, most platforms show the required dimensions in their help section or in the upload dialog box. Choosing a photo that already matches these dimensions saves you the step of cropping or resizing.

Where to find photos: stock sites and your own library

Free stock photo websites like Unsplash, Pexels, and Pixabay have thousands of photos you can use without paying. Most of these photos are free for both personal and commercial use, but always read the license terms before you use one. Some photos require you to credit the photographer; others do not. Some are free for personal use only and require a paid license for commercial use. The license information is usually shown on the photo's page, often in small text at the bottom.

If you are taking your own photos, shoot in good lighting and from multiple angles so you have choices. Take more photos than you think you need — the first shot is rarely the best one. If you are photographing a person, take at least ten photos so you have options for different expressions and angles. If you are photographing a product, shoot from the front, the side, and at an angle, and include close-up shots of details or textures.

Organize your photos in folders by date or by purpose so you can find them later. Delete blurry or poorly lit photos when ready so they do not clutter your library. If you are storing photos on your phone, back them up to a cloud service like Google Photos or iCloud so you do not lose them if your phone breaks.

Common mistakes that make photos look wrong

The most common mistake is choosing a photo that is too small or too low resolution for its purpose. A photo that looks fine on a phone screen will look pixelated and blurry when printed or displayed on a large monitor. Before you commit to a photo, view it at full size on the device or print size where it will actually appear.

Another mistake is using a photo with a distracting or messy background. A portrait with a cluttered room behind the person draws the eye away from the face. A product photo with other items in the frame confuses the viewer about what they are supposed to be looking at. If the background is distracting, choose a different photo or crop the image tighter so the background takes up less space.

Poor lighting is the third major problem. A photo taken in dim light or with harsh shadows will look unprofessional no matter how good the subject is. If you are taking your own photos, shoot in natural daylight near a window, or use a straightforward desk lamp positioned to the side of the subject to create even, flattering light. Avoid shooting directly into a window or light source, which creates a silhouette or washes out the subject.

Frequently Asked Questions

Can I use a photo from Google Images for my website or social media?

Not without checking the license first. Most photos on Google Images are copyrighted, and using them without permission is illegal even if you are not making money. Use Google Images' "Tools" filter to search for photos labeled for reuse, or use a free stock site like Unsplash or Pexels where the license is clear before you read.

What resolution do I need for a photo that will be printed?

For a sharp printed photo, you need at least 300 dots per inch (DPI). A 4-by-6-inch print needs to be at least 1200 by 1800 pixels. A larger print needs proportionally more pixels. If you are unsure, ask the printer what resolution they recommend — they can tell you the exact pixel dimensions needed for your print size.

Is a portrait photo taken on my phone good enough for professional use?

Yes, if the lighting is good and the photo is in focus. Modern phone cameras are high quality. The key is to shoot in natural daylight, position yourself so the light hits your face evenly, and make sure the background is clean and straightforward. Avoid shooting in dim indoor light or with a flash, which creates harsh shadows.

What should I do if the only photo I have is the wrong size or aspect ratio?

You can crop it to fit the required dimensions using free tools like Canva, Pixlr, or your phone's built-in photo editor. Cropping removes parts of the image, so check that the main subject is still visible and centered after you crop. If cropping removes too much, the photo may not work for that purpose.

How do I know if a photo is sharp enough to use?

View it at full size on the device or screen where it will appear. Zoom in on the main subject — if the eyes, face, or product details look crisp and clear, the photo is sharp enough. If they look blurry or soft, the photo is not in focus and should not be used.