What is image letterboxing?

Letterboxing means fitting a wide image into a square (or other ratio) by adding padding above and below. The image keeps its aspect ratio; the empty areas are filled with a solid color or blur. This tool does that for a 1:1 square canvas.

What is pillarboxing?

Pillarboxing is the opposite of letterboxing: a tall image is fitted into a square by adding padding on the left and right. Same idea—no cropping, just padding (borders) to form a square.

How do I add padding to an image for free?

Upload your image here, leave the mode on Solid color (default white). Your image fits inside a square; the rest is padding. Change the background color if you want a different border. Export at any size from 64px to 4096px. No signup.

Padding vs border — what's the difference?

Padding is extra canvas space added around an image to change its aspect ratio (e.g., to 1:1). A border is a stylistic frame that can be thin or thick. In practice, many people call padding a “border,” especially when it’s white.

Will padding reduce image quality?

Padding itself doesn’t reduce quality. Quality issues usually come from exporting too small or upscaling a low-resolution source. Export at a size that matches your target platform (e.g., 1080×1080) and avoid enlarging tiny images.

What background should I use for padding (white vs blur)?

White is clean and consistent for product photos and UI assets. Blur background looks more natural for portraits and landscapes when you don’t want flat borders. Choose based on your feed style and use case.

What export size should I use for padded square images?

For social posts, 1080×1080 is a safe default; 1200×1200 adds quality headroom. For avatars, 512×512 or 1024×1024 is often enough. Export larger when you expect downscaling.

Add Padding to Image – Fit Any Photo in a Square Canvas Free

or drop an image here

Fit your full image inside a square with padding (letterbox or pillarbox). White or custom color borders. No cropping. Export 64–4096px. Free, no signup.

How to Add Padding to an Image

Upload your photo. The tool fits it inside a square.
The empty area is padding—letterbox (top/bottom for wide images) or pillarbox (left/right for tall images).
Keep Solid color (default white) or switch to Blur for a different look.
Choose export size and download. No watermark.

Letterbox vs Pillarbox

Letterbox

Wide (landscape) image in a square: padding goes above and below. Like black bars on a widescreen video.

Pillarbox

Tall (portrait) image in a square: padding goes left and right. The full image stays visible in the center.

When to Use Image Padding

Fitting an image in a square canvas with padding is useful for video thumbnails, slides, print layout, product photos, and social posts where you want the whole image visible without cropping.

Padding vs crop vs resize vs blur (quick decision)

Method	Keeps full image?	Best for
Padding (this page)	Yes	Screenshots, documents, clean borders, consistent squares
Blur background	Yes	Portraits and photos (more natural than flat borders)
Crop	No	Tight framing, intentional composition changes
Resize to square	Usually yes	Fit to target size with minimal changes

Need blur fill? Try Blurred Frame. Need a clean white frame? Try Add White Border.

FAQ

What is image letterboxing?: Letterboxing means fitting a wide image into a square (or other ratio) by adding padding above and below. The image keeps its aspect ratio; the empty areas are filled with a solid color or blur. This tool does that for a 1:1 square canvas.
What is pillarboxing?: Pillarboxing is the opposite of letterboxing: a tall image is fitted into a square by adding padding on the left and right. Same idea—no cropping, just padding (borders) to form a square.
How do I add padding to an image for free?: Upload your image here, leave the mode on Solid color (default white). Your image fits inside a square; the rest is padding. Change the background color if you want a different border. Export at any size from 64px to 4096px. No signup.
Padding vs border — what's the difference?: Padding is extra canvas space added around an image to change its aspect ratio (e.g., to 1:1). A border is a stylistic frame that can be thin or thick. In practice, many people call padding a “border,” especially when it’s white.
Will padding reduce image quality?: Padding itself doesn’t reduce quality. Quality issues usually come from exporting too small or upscaling a low-resolution source. Export at a size that matches your target platform (e.g., 1080×1080) and avoid enlarging tiny images.
What background should I use for padding (white vs blur)?: White is clean and consistent for product photos and UI assets. Blur background looks more natural for portraits and landscapes when you don’t want flat borders. Choose based on your feed style and use case.
What export size should I use for padded square images?: For social posts, 1080×1080 is a safe default; 1200×1200 adds quality headroom. For avatars, 512×512 or 1024×1024 is often enough. Export larger when you expect downscaling.

Guides & tutorials

You may also need

Square Image Maker— Blur, crop, resize—all in one
Blur Photo Frame— Square with blurred background
Instagram Square— 1080×1080 for feed
Twitter / X Square— 1080 posts, profile sizes
Facebook Square— Posts & profile photos