A fast, private way to add border to image files
Whether you want to make a photograph stand out on a white background, create a uniform aesthetic for your social media feed, or prepare a picture for printing, this tool lets you add border to image files instantly. You can customize the thickness, choose any color, and even soften the edges with a corner radius—all from a single, easy-to-use interface.
Because this is a fully local photo border online tool, your files are never uploaded to a remote server. All the rendering and formatting happens directly on your device using your browser's native capabilities. This means you can frame private family photos, confidential documents, or massive high-resolution images without worrying about privacy, data limits, or slow upload speeds.
How to add a border to an image proportionally
One of the most frustrating parts of adding frames in traditional photo editors is figuring out the right pixel dimensions. If you have a batch of photos with different resolutions, a 50-pixel border might look massive on a small web image but nearly invisible on a high-resolution camera original.
To solve this, our tool calculates the border width as a percentage of the image's shortest edge. If you set the width to 5%, the tool automatically determines the correct pixel thickness for each individual photo. This guarantees a consistent, proportional image border across your entire batch, regardless of whether the originals are landscape, portrait, or square.
It is also important to note that the border is added to the outside of your photo. The tool expands the canvas to fit the new frame, meaning no part of your original picture is ever covered up or cropped out. If you need to change the base dimensions of your file before or after framing, you can use our Resize Image tool.
Creating a rounded corners image
Beyond simple square frames, you can use the radius slider to create a beautifully rounded corners image. The radius is also calculated proportionally (up to 50% of the short edge). If you apply a 50% radius to a perfectly square image, you will create a complete circle. For dedicated circular cropping without borders, you might also find our Circle Crop tool useful.
When you add a frame to photo files with rounded corners, the tool intelligently draws concentric inner and outer curves. This ensures that the colored border maintains a perfectly uniform thickness all the way around the curve, giving your images a professional, polished look.
Rounded corners naturally create empty space outside the image area. Because the JPEG format does not support transparency, saving a rounded image as a JPG will result in those empty corners being filled with solid white. If you want the corners to remain transparent so the image blends seamlessly into any website background, simply select PNG or WebP as your output format. If you leave the setting on "Keep Format," the tool is smart enough to automatically convert JPGs to PNGs whenever a corner radius is applied.
Common uses for an image border
Making screenshots stand out. Screenshots of websites or software often have white backgrounds. When you paste them into a document or blog post that also has a white background, the edges bleed together, making it hard to tell where the image ends and the page begins. Adding a subtle 1% or 2% light gray border instantly defines the edges and makes the screenshot pop.
Social media aesthetics. Many creators use a consistent image border to give their Instagram grid or Pinterest boards a cohesive, branded look. Adding a uniform white or colored frame to every photo ties different subjects and lighting styles together into a single visual theme.
Digital matting for prints. If you are preparing a photo to be printed and placed in a physical frame, adding a digital white border acts like a traditional mat (or passe-partout). This ensures none of the important details at the edges of your photo are hidden behind the lip of the physical frame.
Batch processing. If you have an entire album of photos that need the same treatment, you don't have to process them one by one. You can drag and drop dozens of files into the tool at once. Set your preferred width, radius, and color once, and click apply to process the entire batch. The tool will instantly generate a single ZIP file containing all your newly framed photos.