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Resize an image to 300×600 pixels
To resize an image to 300×600 px, enter 300 × 600 px and pick crop to fill so the 1:2 frame is not stretched: a 4:3 phone photo loses 62.5% of its area (a centred 1512×3024 crop). The result has 0.18 megapixels; as a JPEG, a detailed outdoor photo is about 60.4 KB at the panel's default quality 85 (45.1 KB at quality 75).
300×600 px
JPG · no file-size limit · 300x600 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.
300×600 at a glance
| Pixel size | 300×600 px (180,000 pixels) |
|---|---|
| Aspect ratio | 1:2, portrait (width ÷ height = 0.5) |
| Megapixels | 0.18 MP |
| Decoded in memory | 703 KB RGBA · 527 KB RGB |
| Sharp on screen at | 300×600 CSS px at 1×, 150×300 at 2×, 100×200 at 3× density |
| Print size at 300 DPI | 1×2 in (2.5×5.1 cm) |
| Estimated JPEG (outdoor photo, quality 75) | 45.1 KB |
| JPEG without a KB limit (panel default, quality 85) | 60.4 KB |
What 300×600 means in pixels
300×600 is a portrait frame, 2 times as tall as it is wide, 180,000 pixels in total (0.18 megapixels). Its sides reduce to 1:2 (0.5 as a decimal), so any picture cropped to 1:2 scales to it without distortion.
A 12 MP phone photo has 68 times as many pixels, so reaching 300×600 is a clean reduction with no invented detail. Shown 1:1 it fills 300×600 CSS px on a standard screen and 150×300 CSS px on a 2× (Retina-class) screen; at 72 DPI the same pixels span 4.2×8.3 inches.
Decoded for editing it occupies 703 KB of memory (4 bytes per pixel); uncompressed 24-bit RGB would be 527 KB, which is why the downloadable JPEG, PNG or WebP is far smaller.
Getting 300×600 from a phone, camera or screenshot
Filling 300×600 from a vertical phone video frame (1080×1920, 9:16) loses the least (11.1%); a Full HD screenshot (1920×1080, 16:9) loses the most (71.9%). "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 300×600. From the phone photo PixelFit takes the 1512×3024 crop through 756×1512 and 378×756 before the last step to 300×600, 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) | 1512×3024 (left and right cut) | 62.5% | 0.198× (reduced) | 300×225 |
| 24 MP camera photo (6000×4000, 3:2) | 2000×4000 (left and right cut) | 66.7% | 0.15× (reduced) | 300×200 |
| Full HD screenshot (1920×1080, 16:9) | 540×1080 (left and right cut) | 71.9% | 0.556× (reduced) | 300×169 |
| Vertical phone video frame (1080×1920, 9:16) | 960×1920 (left and right cut) | 11.1% | 0.313× (reduced) | 300×533 |
How many KB is a 300×600 image?
Estimated from encodes of real sample images measured with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to 180,000 pixels. The outdoor photo at 300×600 is about 45.1 KB at quality 75 and a scanned page about 30.7 KB; your file will differ with detail and noise.
| Image type | JPEG q60 | JPEG q75 | JPEG q90 | WebP q75 | PNG |
|---|---|---|---|---|---|
| Portrait photo | ≈ 21.1 KB | ≈ 27 KB | ≈ 43.9 KB | ≈ 17.3 KB | ≈ 258 KB |
| Outdoor photo | ≈ 33.7 KB | ≈ 45.1 KB | ≈ 74 KB | ≈ 40 KB | ≈ 349 KB |
| Scanned document | ≈ 23.1 KB | ≈ 30.7 KB | ≈ 50.6 KB | ≈ 22.5 KB | ≈ 252 KB |
| Flat graphic or logo | ≈ 9.3 KB | ≈ 11.6 KB | ≈ 17.5 KB | ≈ 7.1 KB | ≈ 20.7 KB |
Will a 300×600 photo fit an upload limit?
The highest JPEG or WebP quality that stays under each limit at exactly 300×600 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 20 KB | up to quality 53 | does not fit even at quality 30 | does not fit even at quality 30 |
| Under 30 KB | up to quality 78 | up to quality 50 | up to quality 47 |
| Under 50 KB | up to quality 91 | up to quality 77 | up to quality 80 |
| Under 100 KB | fits at quality 95 | up to quality 94 | fits at quality 95 |
Is 300×600 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, 300×600 covers 1×2 in; at 150 DPI the same pixels stretch to 2×4 in with half the density.
| Resolution | Print size (inches) | Print size (cm) |
|---|---|---|
| 72 DPI | 4.17×8.33 in | 10.6×21.2 cm |
| 96 DPI | 3.13×6.25 in | 7.9×15.9 cm |
| 150 DPI | 2×4 in | 5.1×10.2 cm |
| 200 DPI | 1.5×3 in | 3.8×7.6 cm |
| 300 DPI | 1×2 in | 2.5×5.1 cm |
| 600 DPI | 0.5×1 in | 1.3×2.5 cm |
How 300×600 shows on common screens
Shown full screen without cropping, 300×600 is scaled by the factor below; bars fill the space where the shapes differ.
| Screen | Scale | Shown at | Bars |
|---|---|---|---|
| Laptop 1366×768 | 1.28× (enlarged) | 384×768 | 982 px left and right in total |
| Full HD 1920×1080 | 1.8× (enlarged) | 540×1080 | 1380 px left and right in total |
| QHD 2560×1440 | 2.4× (enlarged) | 720×1440 | 1840 px left and right in total |
| 4K UHD 3840×2160 | 3.6× (enlarged) | 1080×2160 | 2760 px left and right in total |
| Phone, portrait 1080×1920 | 3.2× (enlarged) | 960×1920 | 120 px left and right in total |
Sizes close to 300×600
No other target in the PixelFit list has exactly 1:2. The nearest sizes (by pixel count and shape) and their crop from a 300×600 image:
- 33×48 mm photo: 130:189 (1:1.45), 27.3% cropped (top and bottom cut), then 1.3× scale.
- 400×600 portrait: 2:3, 25% cropped (top and bottom cut), then 1.333× scale.
- 30×40 mm photo: 3:4, 33.3% cropped (top and bottom cut), then 1.18× scale.
- 400×514 px photo: 200:257 (about 7:9), 35.7% cropped (top and bottom cut), then 1.333× scale.
How to resize a picture to 300×600
-
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 300 as the width and 600 as the height in pixels (the panel is already set to 300×600).
-
Choose how it fits
Choose crop to fill to keep the 1:2 frame without stretching (a phone photo loses 62.5%, left and right cut). Fit inside keeps the whole picture as a 300×225 file instead; Pad with colour puts that on a full 300×600 canvas.
-
Pick the format and download
Choose JPG or WebP; without a KB limit PixelFit saves JPG at quality 85, about 60.4 KB for a detailed outdoor photo. Add a KB limit if the upload has one or the file should be smaller, then download the 300x600 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 300x600?
Open the image in the PixelFit panel on this page, set 300 × 600 px, choose crop to fill so nothing is stretched and download. From a 12 MP phone photo that crops 62.5% (left and right cut) and scales the rest by 0.198×.
What aspect ratio is 300x600?
300x600 has an aspect ratio of 1:2: portrait, width ÷ height = 0.5. No other common target has exactly this ratio: the frame is 2 times as tall as it is wide, and the closest familiar shape is 9:16, 11.1% away, so converting between them means a visible crop.
Is 300x600 good for print?
At 300 DPI 300x600 prints 1×2 in (2.5×5.1 cm). At 150 DPI it stretches to 2×4 in.
How big is a 300x600 JPEG file?
For a detailed outdoor photo about 45.1 KB at quality 75 (33.7 KB at 60, 74 KB at 90, 60.4 KB at the panel's default quality 85); a head-and-shoulders portrait is about 27 KB at quality 75, estimated from measured encodes. A flat graphic is smaller, a noisy low-light photo larger.
How does 300x600 look on a high-density screen?
On a 2× screen 300x600 is sharp when shown at 150×300 CSS px; shown larger, the browser enlarges it. A slot of 300×600 CSS px on a 2× screen needs a 600×1200 file.
Related
Nearby sizes
- 33×48 mm photo 130:189 (1:1.45)
- 400×600 portrait 2:3
- 30×40 mm photo 3:4
- 400×514 px photo 200:257 (about 7:9)
- 35×45 mm passport photo 7:9
- 25×35 mm photo 5:7