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Resize an image to 320×100 pixels
To resize an image to 320×100 px, enter 320 × 100 px and pick crop to fill so the 16:5 frame is not stretched: a 4:3 phone photo loses 58.3% of its area (a centred 4032×1260 crop). The result has 0.032 megapixels; as a JPEG, a detailed outdoor photo is about 11.5 KB at the panel's default quality 85 (8.6 KB at quality 75).
320×100 px
JPG · no file-size limit · 320x100 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.
320×100 at a glance
| Pixel size | 320×100 px (32,000 pixels) |
|---|---|
| Aspect ratio | 16:5, landscape (width ÷ height = 3.2) |
| Megapixels | 0.032 MP |
| Decoded in memory | 125 KB RGBA · 93.8 KB RGB |
| Sharp on screen at | 320×100 CSS px at 1×, 160×50 at 2×, 107×33 at 3× density |
| Print size at 300 DPI | 1.07×0.33 in (2.7×0.8 cm) |
| Estimated JPEG (outdoor photo, quality 75) | 8.6 KB |
| JPEG without a KB limit (panel default, quality 85) | 11.5 KB |
What 320×100 means in pixels
320×100 is a landscape frame, 3.2 times as wide as it is tall, 32,000 pixels in total (0.032 megapixels). Its sides reduce to 16:5 (3.2 as a decimal), so any picture cropped to 16:5 scales to it without distortion.
It is thumbnail scale: a 12 MP phone photo carries 381 times more pixels, so the resize discards most of them and the stepped downscale matters for sharpness. Shown 1:1 it fills 320×100 CSS px on a standard screen and 160×50 CSS px on a 2× (Retina-class) screen; at 72 DPI the same pixels span 4.4×1.4 inches.
Decoded for editing it occupies 125 KB of memory (4 bytes per pixel); uncompressed 24-bit RGB would be 93.8 KB, which is why the downloadable JPEG, PNG or WebP is far smaller.
Getting 320×100 from a phone, camera or screenshot
Filling 320×100 from a Full HD screenshot (1920×1080, 16:9) loses the least (44.4%); a vertical phone video frame (1080×1920, 9:16) loses the most (82.4%). "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 320×100. From the phone photo PixelFit takes the 4032×1260 crop through 2016×630, 1008×315 and 504×157 before the last step to 320×100, 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) | 4032×1260 (top and bottom cut) | 58.3% | 0.079× (reduced) | 133×100 |
| 24 MP camera photo (6000×4000, 3:2) | 6000×1875 (top and bottom cut) | 53.1% | 0.053× (reduced) | 150×100 |
| Full HD screenshot (1920×1080, 16:9) | 1920×600 (top and bottom cut) | 44.4% | 0.167× (reduced) | 178×100 |
| Vertical phone video frame (1080×1920, 9:16) | 1080×338 (top and bottom cut) | 82.4% | 0.296× (reduced) | 56×100 |
How many KB is a 320×100 image?
Estimated from encodes of real sample images measured with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to 32,000 pixels. The outdoor photo at 320×100 is about 8.6 KB at quality 75 and a scanned page about 5.6 KB; your file will differ with detail and noise.
| Image type | JPEG q60 | JPEG q75 | JPEG q90 | WebP q75 | PNG |
|---|---|---|---|---|---|
| Portrait photo | ≈ 6.1 KB | ≈ 7.8 KB | ≈ 12.2 KB | ≈ 6.1 KB | ≈ 55.1 KB |
| Outdoor photo | ≈ 6.5 KB | ≈ 8.6 KB | ≈ 14 KB | ≈ 7.6 KB | ≈ 62.7 KB |
| Scanned document | ≈ 4.2 KB | ≈ 5.6 KB | ≈ 9.6 KB | ≈ 4.3 KB | ≈ 48 KB |
| Flat graphic or logo | ≈ 3.3 KB | ≈ 4.1 KB | ≈ 6.2 KB | ≈ 2.6 KB | ≈ 7.2 KB |
Will a 320×100 photo fit an upload limit?
The highest JPEG or WebP quality that stays under each limit at exactly 320×100 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 10 KB | up to quality 84 | up to quality 79 | up to quality 81 |
| Under 20 KB | fits at quality 95 | fits at quality 95 | fits at quality 95 |
| Under 30 KB | fits at quality 95 | fits at quality 95 | fits at quality 95 |
Is 320×100 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, 320×100 covers 1.07×0.33 in; at 150 DPI the same pixels stretch to 2.13×0.67 in with half the density.
| Resolution | Print size (inches) | Print size (cm) |
|---|---|---|
| 72 DPI | 4.44×1.39 in | 11.3×3.5 cm |
| 96 DPI | 3.33×1.04 in | 8.5×2.6 cm |
| 150 DPI | 2.13×0.67 in | 5.4×1.7 cm |
| 200 DPI | 1.6×0.5 in | 4.1×1.3 cm |
| 300 DPI | 1.07×0.33 in | 2.7×0.8 cm |
| 600 DPI | 0.53×0.17 in | 1.4×0.4 cm |
How 320×100 shows on common screens
Shown full screen without cropping, 320×100 is scaled by the factor below; bars fill the space where the shapes differ.
| Screen | Scale | Shown at | Bars |
|---|---|---|---|
| Laptop 1366×768 | 4.27× (enlarged) | 1366×427 | 341 px top and bottom in total |
| Full HD 1920×1080 | 6× (enlarged) | 1920×600 | 480 px top and bottom in total |
| QHD 2560×1440 | 8× (enlarged) | 2560×800 | 640 px top and bottom in total |
| 4K UHD 3840×2160 | 12× (enlarged) | 3840×1200 | 960 px top and bottom in total |
| Phone, portrait 1080×1920 | 3.38× (enlarged) | 1080×338 | 1582 px top and bottom in total |
Sizes close to 320×100
No other target in the PixelFit list has exactly 16:5. The nearest sizes (by pixel count and shape) and their crop from a 320×100 image:
- 468×60 banner: 39:5 (7.8:1), 59% cropped (top and bottom cut), then 1.463× scale.
- 320×50 banner: 32:5, 50% cropped (top and bottom cut), then 1× scale.
- 300×200 landscape: 3:2, 53.1% cropped (left and right cut), then 2× scale.
- 180×180 apple-touch-icon: 1:1, 68.8% cropped (left and right cut), then 1.8× scale.
How to resize a picture to 320×100
-
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 320 as the width and 100 as the height in pixels (the panel is already set to 320×100).
-
Choose how it fits
Choose crop to fill to keep the 16:5 frame without stretching (a phone photo loses 58.3%, top and bottom cut). Fit inside keeps the whole picture as a 133×100 file instead; Pad with colour puts that on a full 320×100 canvas.
-
Pick the format and download
Choose JPG or WebP; without a KB limit PixelFit saves JPG at quality 85, about 11.5 KB for a detailed outdoor photo. Add a KB limit if the upload has one or the file should be smaller, then download the 320x100 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 320x100?
Open the image in the PixelFit panel on this page, set 320 × 100 px, choose crop to fill so nothing is stretched and download. From a 12 MP phone photo that crops 58.3% (top and bottom cut) and scales the rest by 0.079×.
What aspect ratio is 320x100?
320x100 has an aspect ratio of 16:5: landscape, width ÷ height = 3.2. No other common target has exactly this ratio; the closest familiar shape is 3:1, 6.7% away.
Is 320x100 good for print?
At 300 DPI 320x100 prints 1.07×0.33 in (2.7×0.8 cm), smaller than a passport photo, so it is a screen size rather than a print size. At 150 DPI it stretches to 2.13×0.67 in.
How big is a 320x100 JPEG file?
For a detailed outdoor photo about 8.6 KB at quality 75 (6.5 KB at 60, 14 KB at 90, 11.5 KB at the panel's default quality 85); a head-and-shoulders portrait is about 7.8 KB at quality 75, estimated from measured encodes. A flat graphic is smaller, a noisy low-light photo larger.
How does 320x100 look on a high-density screen?
On a 2× screen 320x100 is sharp when shown at 160×50 CSS px; shown larger, the browser enlarges it. A slot of 320×100 CSS px on a 2× screen needs a 640×200 file.
Related
Nearby sizes
- 468×60 banner 39:5 (7.8:1)
- 320×50 banner 32:5
- 300×200 landscape 3:2
- 180×180 apple-touch-icon 1:1
- 970×250 banner 97:25 (3.88:1)
- 167×167 touch icon 1:1