4x6 Inch
Resize a Photo to 4x6 Inch
A 4x6 inch print (also sold as 4R, 102 × 152 mm) needs 1200 × 1800 pixels at 300 DPI. Upload a photo and it is center-cropped to the 2:3 shape and saved as a JPEG of 50 KB to 1 MB, ready to print. Nothing is uploaded.
- Runs in your browser
- Nothing uploaded
- No sign-up
- Free, no daily limits
- 1Add your file
- 2Choose settings
- 3Download
Last updated
A 4×6 inch photograph (the standard 4R print size) is widely used for photo albums and framed prints, and it is also the postcard size that the National Testing Agency asks NEET (UG) candidates to bring to the exam centre. This client-side tool scales and center-crops your image into an exact 1200×1800 pixel JPEG file at 300 DPI print resolution. The entire transformation executes locally in your browser without uploading your picture to any remote server.
The tool center-crops your image to a 2:3 vertical aspect ratio and runs a compression loop targeting a file size between 50 KB and 1000 KB (1 MB). If you are preparing an admit card proforma for medical entrance tests, check our NEET exam photo size guide and verify requirements with our Document Checker.
How it works
1. Upload photograph or portrait
Click Upload Photo or drop your file into the upload zone. Your browser can open JPG, PNG and WEBP pictures directly. Safari supports iPhone HEIC files, while other browsers require JPG or PNG format.
2. Confirm preset parameters
Check the preset card displaying 1200×1800 Pixels, 4×6 in Inches, 300 DPI Resolution, and the 50 to 1000 KB File Size target range.
3. Execute crop and quality compression
Click Resize Photo. The tool draws the image to canvas, crops excess margins to maintain the 2:3 aspect ratio, and runs a binary search across JPEG quality settings.
4. Review specifications and download JPEG
Review the result badge. The file always lands between 50 KB and 1000 KB and shows Ready to use. Output smaller than 50 KB receives trailing byte padding. Click Download to save the image.
When you'd use it
NEET (UG) entrance exam postcard print
Preparing the 4×6 inch colour print with a white background that the NEET (UG) official bulletin mandates candidates paste onto the admit card proforma.
Standard 4R commercial photo prints
Preparing camera or smartphone pictures for standard 4×6 inch (10×15 cm) prints at commercial minilabs, pharmacy kiosks, and home photo printers.
Tabletop picture frames and photo albums
Cropping digital pictures to the exact 2:3 ratio required by standard tabletop photo frames and slip-in album sleeves without distortion.
Audition and portfolio comp cards
Standardizing 4×6 inch composite cards and headshot cards for acting auditions, modeling agency submissions, and graduation yearbooks.
4 × 6 inch dimensions in pixels across different DPI settings
In physical measurements, a 4×6 inch print (4R) measures 101.6 mm by 152.4 mm, matching the 2:3 vertical aspect ratio of 35mm film and standard digital SLR sensors. Converting physical inches into digital pixels requires multiplying by the target Dots Per Inch (DPI). At 300 DPI, the benchmark for continuous-tone photographic printing, a 4×6 inch surface requires exactly 1200 pixels horizontally by 1800 pixels vertically.
A 4×6 cm photo, common on certain European identification forms, is a completely different measurement: 472 × 709 pixels at 300 DPI, which is less than a fourth of the surface area. For whole-page document scanning, use our A4 size resizer, or scale smaller badge photos with our 3x4 inch resizer.
| Resolution (DPI) | Width (4 in) | Height (6 in) | Total Pixels |
|---|---|---|---|
| 72 DPI | 288 px | 432 px | 124,416 px |
| 96 DPI | 384 px | 576 px | 221,184 px |
| 150 DPI | 600 px | 900 px | 540,000 px |
| 200 DPI | 800 px | 1200 px | 960,000 px |
| 300 DPI (This Tool) | 1200 px | 1800 px | 2,160,000 px |
| 600 DPI | 2400 px | 3600 px | 8,640,000 px |
Which examination boards and photo labs require 4×6 inch photos?
The Information Bulletin for NEET UG, published by the National Testing Agency, specifies two distinct photographic formats. The online application form requires a passport-size photograph (10 KB to 200 KB). However, for test day, candidates must bring a physical Post Card size (4×6 inch) colour photograph with a clean white background to paste onto the attendance proforma.
Similarly, the Delhi Subordinate Services Selection Board mandates postcard photos for select recruitment tiers, though DSSSB specifies a 5×7 inch format (480 × 672 px, 50–300 KB). For physical printing, commercial minilabs accept 1200×1800 pixel JPEGs for direct borderless printing on 4R paper.
Center-cropping mechanics and background underlay
Smartphone cameras commonly capture photos in a 4:3 or 16:9 aspect ratio. To produce a 2:3 vertical frame, the tool center-crops the input. It compares the proportions and trims excess width from both sides, or trims excess height from top and bottom. Because this process cuts off whatever extends beyond the central 2:3 boundary, an off-center subject will lose part of their ears or head. Crop the photo manually around your subject before uploading if necessary.
The canvas context paints a white base (#ffffff) before drawing the image, but this only shows through transparent pixels in files such as PNG. It does not replace or whiten the background of a standard photograph, nor does it remove shadows. The NEET bulletin asks for a white background, so take the original picture in front of a flat, evenly lit white wall.
Why the preset targets 50 to 1000 KB and how padding works
TryDocsy's 4×6 preset targets a file size window between 50 KB and 1000 KB (1 MB) to preserve optical continuous-tone gradient fidelity on photographic paper. The algorithm binary-searches JPEG quality downward from 1.0 to 0.1 on the 1200×1800 canvas.
If an image compresses to under 50 KB, the engine appends trailing zero bytes past the JPEG End of Image marker, lifting the file weight to 50 KB without modifying pixel clarity. If a heavily textured image cannot compress below 1000 KB at quality 0.1, the tool presents an informative error rather than generating a non-compliant file.
Check before you upload: before printing or uploading your photograph, verify dimensions and formatting using our Document Checker.
Frequently asked questions
What is 4x6 inches in pixels?
At 300 DPI print resolution, a 4×6 inch portrait measures exactly 1200 pixels wide by 1800 pixels high, totaling approximately 2.16 megapixels. At 200 DPI it is 800 × 1200 pixels, and at 96 DPI it is 384 × 576 pixels.
Should I upload this 4x6 inch file to the NEET (UG) online application form?
No. The NEET (UG) online form requires a passport-size photograph (JPG/JPEG, 10 to 200 KB). The 4×6 inch postcard photograph is a physical print that must be pasted onto the proforma downloaded with your admit card.
How do I print the 4x6 postcard photo for NEET (UG)?
Save the downloaded 1200×1800 pixel JPEG to a USB drive or phone and print it at a local photo lab or pharmacy kiosk on standard 4×6 inch photo paper at 100% scale without choosing shrink-to-fit.
Does this tool whiten the background of my photo automatically?
No. The white canvas layer only shows through transparent pixels in files like PNG. It does not replace coloured backgrounds or erase shadows on ordinary photos. Take your picture against an evenly lit white wall.
What is the difference between a 4x6 inch and a 4x6 cm photo?
A 4×6 inch photo (101.6 × 152.4 mm) requires 1200×1800 pixels at 300 DPI, whereas a 4×6 cm photo (40 × 60 mm) requires only 472×709 pixels. An inch print is over four times larger in surface area.
Are my uploaded photographs stored on external servers?
No. All canvas transformations, cropping operations, and JPEG encodings execute locally within your browser runtime. No image data or metadata is ever transmitted over the network.