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Resize an image to 800×800 pixels
To resize an image to 800×800 px, enter 800 × 800 px and pick crop to fill so the 1:1 frame is not stretched: a 4:3 phone photo loses 25% of its area (a centred 3024×3024 crop). The result has 0.64 megapixels; as a JPEG, a detailed outdoor photo is about 214 KB at the panel's default quality 85 (161 KB at quality 75).
800×800 px
JPG · no file-size limit · 800x800 px · white background
No file-size limit is set: PixelFit saves at high quality and changes only the format and any pixel size you set.
Fit, background and padding crop to fill · white background
Saving presets is part of Pro.
The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.
The batch kit (one ZIP for up to 500 photos, several photos merged into one PDF) is part of Pro.
800×800 at a glance
| Pixel size | 800×800 px (640,000 pixels) |
|---|---|
| Aspect ratio | 1:1, square (width ÷ height = 1) |
| Megapixels | 0.64 MP |
| Decoded in memory | 2.44 MB RGBA · 1.83 MB RGB |
| Sharp on screen at | 800×800 CSS px at 1×, 400×400 at 2×, 267×267 at 3× density |
| Print size at 300 DPI | 2.67×2.67 in (6.8×6.8 cm) |
| Estimated JPEG (outdoor photo, quality 75) | 161 KB |
| JPEG without a KB limit (panel default, quality 85) | 214 KB |
What 800×800 means in pixels
800×800 is a square, 800 pixels on each side, 640,000 pixels in total (0.64 megapixels). Its sides reduce to 1:1 (1 as a decimal), so any picture cropped to 1:1 scales to it without distortion.
A 12 MP phone photo has 19 times as many pixels, so reaching 800×800 is a clean reduction with no invented detail. Shown 1:1 it fills 800×800 CSS px on a standard screen and 400×400 CSS px on a 2× (Retina-class) screen; at 72 DPI the same pixels span 11.1×11.1 inches.
Decoded for editing it occupies 2.44 MB of memory (4 bytes per pixel); uncompressed 24-bit RGB would be 1.83 MB, which is why the downloadable JPEG, PNG or WebP is far smaller.
Getting 800×800 from a phone, camera or screenshot
Filling 800×800 from a 12 MP phone photo (4032×3024, 4:3) loses the least (25%); a vertical phone video frame (1080×1920, 9:16) loses the most (43.8%). "Fit inside" keeps the whole picture instead and the file comes out at the size in the last column; "Pad with colour" adds bars to reach the full 800×800. From the phone photo PixelFit takes the 3024×3024 crop through 1512×1512 before the last step to 800×800, so each pass blends neighbouring pixels instead of skipping them.
| Starting image | Crop to fill keeps | Area lost | Scale | Fit inside gives |
|---|---|---|---|---|
| 12 MP phone photo (4032×3024, 4:3) | 3024×3024 (left and right cut) | 25% | 0.265× (reduced) | 800×600 |
| 24 MP camera photo (6000×4000, 3:2) | 4000×4000 (left and right cut) | 33.3% | 0.2× (reduced) | 800×533 |
| Full HD screenshot (1920×1080, 16:9) | 1080×1080 (left and right cut) | 43.8% | 0.741× (reduced) | 800×450 |
| Vertical phone video frame (1080×1920, 9:16) | 1080×1080 (top and bottom cut) | 43.8% | 0.741× (reduced) | 450×800 |
How many KB is an 800×800 image?
Estimated from encodes of real sample images measured with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to 640,000 pixels. The outdoor photo at 800×800 is about 161 KB at quality 75 and a scanned page about 96.2 KB; your file will differ with detail and noise.
| Image type | JPEG q60 | JPEG q75 | JPEG q90 | WebP q75 | PNG |
|---|---|---|---|---|---|
| Portrait photo | ≈ 54.1 KB | ≈ 70.5 KB | ≈ 120 KB | ≈ 38.4 KB | ≈ 840 KB |
| Outdoor photo | ≈ 121 KB | ≈ 161 KB | ≈ 261 KB | ≈ 142 KB | ≈ 1.22 MB |
| Scanned document | ≈ 72.9 KB | ≈ 96.2 KB | ≈ 161 KB | ≈ 63.3 KB | ≈ 797 KB |
| Flat graphic or logo | ≈ 20.5 KB | ≈ 25.5 KB | ≈ 37.6 KB | ≈ 14.6 KB | ≈ 43.3 KB |
Will an 800×800 photo fit an upload limit?
The highest JPEG or WebP quality that stays under each limit at exactly 800×800 px, from the same measurements. Set the KB limit next to the pixel size and PixelFit runs this search on your own photo.
| Limit | Portrait, JPEG | Outdoor photo, JPEG | Outdoor photo, WebP |
|---|---|---|---|
| Under 50 KB | up to quality 52 | does not fit even at quality 30 | does not fit even at quality 30 |
| Under 100 KB | up to quality 85 | up to quality 45 | up to quality 41 |
| Under 200 KB | fits at quality 95 | up to quality 81 | up to quality 84 |
Is 800×800 good for print?
Pixels carry no physical size until you pick a DPI. At 300 DPI, the resolution PixelFit uses for its print and ID photo sizes, 800×800 covers 2.67×2.67 in; at 150 DPI the same pixels stretch to 5.33×5.33 in with half the density.
| Resolution | Print size (inches) | Print size (cm) |
|---|---|---|
| 72 DPI | 11.11×11.11 in | 28.2×28.2 cm |
| 96 DPI | 8.33×8.33 in | 21.2×21.2 cm |
| 150 DPI | 5.33×5.33 in | 13.5×13.5 cm |
| 200 DPI | 4×4 in | 10.2×10.2 cm |
| 300 DPI | 2.67×2.67 in | 6.8×6.8 cm |
| 600 DPI | 1.33×1.33 in | 3.4×3.4 cm |
How 800×800 shows on common screens
Shown full screen without cropping, 800×800 is scaled by the factor below; bars fill the space where the shapes differ.
| Screen | Scale | Shown at | Bars |
|---|---|---|---|
| Laptop 1366×768 | 0.96× (reduced) | 768×768 | 598 px left and right in total |
| Full HD 1920×1080 | 1.35× (enlarged) | 1080×1080 | 840 px left and right in total |
| QHD 2560×1440 | 1.8× (enlarged) | 1440×1440 | 1120 px left and right in total |
| 4K UHD 3840×2160 | 2.7× (enlarged) | 2160×2160 | 1680 px left and right in total |
| Phone, portrait 1080×1920 | 1.35× (enlarged) | 1080×1080 | 840 px top and bottom in total |
Other 1:1 sizes
These targets share the exact 1:1 ratio of 800×800, so resizing between them is a pure scale with nothing cropped.
| Size | Scale from 800×800 | Megapixels |
|---|---|---|
| 900×900 square | 1.13× | 0.81 MP |
| 700×700 square | 0.88× | 0.49 MP |
| 1000×1000 square | 1.25× | 1 MP |
| 1024×1024 square | 1.28× | 1.05 MP |
| 600×600 square | 0.75× | 0.36 MP |
| 1080×1080 square | 1.35× | 1.17 MP |
| 1200×1200 square | 1.5× | 1.44 MP |
| 512×512 PWA icon | 0.64× | 0.26 MP |
How to resize a picture to 800×800
-
Add the picture
Drop, paste or pick the photo in the PixelFit panel at the top of this page; it is decoded in your browser and never uploaded.
-
Set the size
Enter 800 as the width and 800 as the height in pixels (the panel is already set to 800×800).
-
Choose how it fits
Choose crop to fill to keep the 1:1 frame without stretching (a phone photo loses 25%, left and right cut). Fit inside keeps the whole picture as an 800×600 file instead; Pad with colour puts that on a full 800×800 canvas.
-
Pick the format and download
Choose JPG or WebP; without a KB limit PixelFit saves JPG at quality 85, about 214 KB for a detailed outdoor photo. Add a KB limit if the upload has one or the file should be smaller, then download the 800x800 file.
Sources
- Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, from the sample photo Hartz Lake at Hartz Mountain.jpg by JustinH (Wikimedia Commons user) (CC0 1.0): commons.wikimedia.org/wiki/File:Hartz_Lake_at_Hartz_Mount…
Frequently asked questions
How do I resize an image to 800x800?
Open the image in the PixelFit panel on this page, set 800 × 800 px, choose crop to fill so nothing is stretched and download. From a 12 MP phone photo that crops 25% (left and right cut) and scales the rest by 0.265×.
What aspect ratio is 800x800?
800x800 has an aspect ratio of 1:1: square, width ÷ height = 1. Sizes with the same ratio include 900×900 square, 700×700 square and 1000×1000 square.
Is 800x800 good for print?
At 300 DPI 800x800 prints 2.67×2.67 in (6.8×6.8 cm). At 150 DPI it stretches to 5.33×5.33 in.
How big is an 800x800 JPEG file?
For a detailed outdoor photo about 161 KB at quality 75 (121 KB at 60, 261 KB at 90, 214 KB at the panel's default quality 85); a head-and-shoulders portrait is about 70.5 KB at quality 75, estimated from measured encodes. A flat graphic is smaller, a noisy low-light photo larger.
How does 800x800 look on a high-density screen?
On a 2× screen 800x800 is sharp when shown at 400×400 CSS px; shown larger, the browser enlarges it. A slot of 800×800 CSS px on a 2× screen needs a 1600×1600 file.