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Resize an image to 768×1024 pixels
To resize an image to 768×1024 px, enter 768 × 1024 px and pick crop to fill so the 3:4 frame is not stretched: a 4:3 phone photo loses 43.8% of its area (a centred 2268×3024 crop). The result has 0.79 megapixels; as a JPEG, a detailed outdoor photo is about 264 KB at the panel's default quality 85 (199 KB at quality 75).
768×1024 px
JPG · no file-size limit · 768x1024 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.
768×1024 at a glance
| Pixel size | 768×1024 px (786,432 pixels) |
|---|---|
| Aspect ratio | 3:4, portrait (width ÷ height = 0.75) |
| Megapixels | 0.79 MP |
| Decoded in memory | 3 MB RGBA · 2.25 MB RGB |
| Sharp on screen at | 768×1024 CSS px at 1×, 384×512 at 2×, 256×341 at 3× density |
| Print size at 300 DPI | 2.56×3.41 in (6.5×8.7 cm) |
| Estimated JPEG (outdoor photo, quality 75) | 199 KB |
| JPEG without a KB limit (panel default, quality 85) | 264 KB |
What 768×1024 means in pixels
768×1024 is a portrait frame, 1.33 times as tall as it is wide, 786,432 pixels in total (0.79 megapixels). Its sides reduce to 3:4 (0.75 as a decimal), so any picture cropped to 3:4 scales to it without distortion.
A 12 MP phone photo has 16 times as many pixels, so reaching 768×1024 is a clean reduction with no invented detail. Shown 1:1 it fills 768×1024 CSS px on a standard screen and 384×512 CSS px on a 2× (Retina-class) screen; at 72 DPI the same pixels span 10.7×14.2 inches.
Decoded for editing it occupies 3 MB of memory (4 bytes per pixel); uncompressed 24-bit RGB would be 2.25 MB, which is why the downloadable JPEG, PNG or WebP is far smaller.
Getting 768×1024 from a phone, camera or screenshot
Filling 768×1024 from a vertical phone video frame (1080×1920, 9:16) loses the least (25%); a Full HD screenshot (1920×1080, 16:9) loses the most (57.8%). "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 768×1024. From the phone photo PixelFit takes the 2268×3024 crop through 1134×1512 before the last step to 768×1024, 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) | 2268×3024 (left and right cut) | 43.8% | 0.339× (reduced) | 768×576 |
| 24 MP camera photo (6000×4000, 3:2) | 3000×4000 (left and right cut) | 50% | 0.256× (reduced) | 768×512 |
| Full HD screenshot (1920×1080, 16:9) | 810×1080 (left and right cut) | 57.8% | 0.948× (reduced) | 768×432 |
| Vertical phone video frame (1080×1920, 9:16) | 1080×1440 (top and bottom cut) | 25% | 0.711× (reduced) | 576×1024 |
How many KB is a 768×1024 image?
Estimated from encodes of real sample images measured with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to 786,432 pixels. The outdoor photo at 768×1024 is about 199 KB at quality 75 and a scanned page about 114 KB; your file will differ with detail and noise.
| Image type | JPEG q60 | JPEG q75 | JPEG q90 | WebP q75 | PNG |
|---|---|---|---|---|---|
| Portrait photo | ≈ 63.2 KB | ≈ 82.7 KB | ≈ 143 KB | ≈ 43.9 KB | ≈ 1,020 KB |
| Outdoor photo | ≈ 149 KB | ≈ 199 KB | ≈ 321 KB | ≈ 174 KB | ≈ 1.5 MB |
| Scanned document | ≈ 86.5 KB | ≈ 114 KB | ≈ 191 KB | ≈ 73.4 KB | ≈ 961 KB |
| Flat graphic or logo | ≈ 23.5 KB | ≈ 29 KB | ≈ 42.9 KB | ≈ 16.4 KB | ≈ 48.5 KB |
Will a 768×1024 photo fit an upload limit?
The highest JPEG or WebP quality that stays under each limit at exactly 768×1024 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 100 KB | up to quality 80 | up to quality 34 | up to quality 30 |
| Under 200 KB | up to quality 94 | up to quality 74 | up to quality 78 |
| Under 500 KB | fits at quality 95 | fits at quality 95 | fits at quality 95 |
Is 768×1024 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, 768×1024 covers 2.56×3.41 in; at 150 DPI the same pixels stretch to 5.12×6.83 in with half the density.
| Resolution | Print size (inches) | Print size (cm) |
|---|---|---|
| 72 DPI | 10.67×14.22 in | 27.1×36.1 cm |
| 96 DPI | 8×10.67 in | 20.3×27.1 cm |
| 150 DPI | 5.12×6.83 in | 13×17.3 cm |
| 200 DPI | 3.84×5.12 in | 9.8×13 cm |
| 300 DPI | 2.56×3.41 in | 6.5×8.7 cm |
| 600 DPI | 1.28×1.71 in | 3.3×4.3 cm |
How 768×1024 shows on common screens
Shown full screen without cropping, 768×1024 is scaled by the factor below; bars fill the space where the shapes differ.
| Screen | Scale | Shown at | Bars |
|---|---|---|---|
| Laptop 1366×768 | 0.75× (reduced) | 576×768 | 790 px left and right in total |
| Full HD 1920×1080 | 1.05× (enlarged) | 810×1080 | 1110 px left and right in total |
| QHD 2560×1440 | 1.41× (enlarged) | 1080×1440 | 1480 px left and right in total |
| 4K UHD 3840×2160 | 2.11× (enlarged) | 1620×2160 | 2220 px left and right in total |
| Phone, portrait 1080×1920 | 1.41× (enlarged) | 1080×1440 | 480 px top and bottom in total |
Other 3:4 sizes
These targets share the exact 3:4 ratio of 768×1024, so resizing between them is a pure scale with nothing cropped.
| Size | Scale from 768×1024 | Megapixels |
|---|---|---|
| 900×1200 portrait | 1.17× | 1.08 MP |
| 600×800 portrait | 0.78× | 0.48 MP |
| 1080×1440 portrait | 1.41× | 1.56 MP |
| 1200×1600 portrait | 1.56× | 1.92 MP |
| 480×640 portrait | 0.63× | 0.31 MP |
| 300×400 portrait | 0.39× | 0.12 MP |
| 150×200 px photo | 0.2× | 0.03 MP |
| 30×40 mm photo | 0.46× | 0.17 MP |
How to resize a picture to 768×1024
-
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 768 as the width and 1024 as the height in pixels (the panel is already set to 768×1024).
-
Choose how it fits
Choose crop to fill to keep the 3:4 frame without stretching (a phone photo loses 43.8%, left and right cut). Fit inside keeps the whole picture as a 768×576 file instead; Pad with colour puts that on a full 768×1024 canvas.
-
Pick the format and download
Choose JPG or WebP; without a KB limit PixelFit saves JPG at quality 85, about 264 KB for a detailed outdoor photo. Add a KB limit if the upload has one or the file should be smaller, then download the 768x1024 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 768x1024?
Open the image in the PixelFit panel on this page, set 768 × 1024 px, choose crop to fill so nothing is stretched and download. From a 12 MP phone photo that crops 43.8% (left and right cut) and scales the rest by 0.339×.
What aspect ratio is 768x1024?
768x1024 has an aspect ratio of 3:4: portrait, width ÷ height = 0.75. Sizes with the same ratio include 900×1200 portrait, 600×800 portrait and 1080×1440 portrait.
Is 768x1024 good for print?
At 300 DPI 768x1024 prints 2.56×3.41 in (6.5×8.7 cm). At 150 DPI it stretches to 5.12×6.83 in.
How big is a 768x1024 JPEG file?
For a detailed outdoor photo about 199 KB at quality 75 (149 KB at 60, 321 KB at 90, 264 KB at the panel's default quality 85); a head-and-shoulders portrait is about 82.7 KB at quality 75, estimated from measured encodes. A flat graphic is smaller, a noisy low-light photo larger.
How does 768x1024 look on a high-density screen?
On a 2× screen 768x1024 is sharp when shown at 384×512 CSS px; shown larger, the browser enlarges it. A slot of 768×1024 CSS px on a 2× screen needs a 1536×2048 file.
Related
Same 3:4 ratio
Nearby sizes
- 800×1200 portrait 2:3
- 630×810 px photo 7:9
- A4 at 72 DPI 595:842 (1:1.42)
- 50×70 mm passport photo 591:827 (1:1.4)
- 900×900 square 1:1
- 2×3 inch print 2:3