Resize an image to 300 × 100 pixels
300 × 100 pixels is a landscape 3:1 size, often used for 3:1 signature fields. Choose your signature, place it in the frame and download a JPG that is exactly 300 × 100 px and under your form’s KB limit.
Stays on your device. Nothing is uploaded.
Drop a photo of your signature
Sign on plain white paper and take a photo in daylight.
or drag and drop
Choose an image to begin.
About 300 × 100 px
- Aspect ratio
- 3:1
- Orientation
- Landscape
- Total pixels
- 30,000 (0.03 MP)
- Printed at 300 DPI
- 25.4 × 8.5 mm (1 × 0.33 in)
Printed size by DPI
| DPI | mm | inch |
|---|---|---|
| 72 | 105.8 × 35.3 | 4.17 × 1.39 |
| 96 | 79.4 × 26.5 | 3.13 × 1.04 |
| 150 | 50.8 × 16.9 | 2 × 0.67 |
| 200 | 38.1 × 12.7 | 1.5 × 0.5 |
| 300 | 25.4 × 8.5 | 1 × 0.33 |
How it works
- 01Sign with a dark pen on plain white paper and take a photo of it in daylight.
- 02Switch to Signature, enter the size and maximum KB from your form.
- 03Choose the photo. The ink is found and trimmed automatically; adjust the threshold if strokes look thin.
- 04Download the clean, white-background signature.
Questions
How do I resize a photo to 300 × 100 pixels?
Open the tool on this page, choose your photo, drag it into the 3:1 frame and press Download. The file is always exactly 300 × 100 px; you never need to type the numbers.
What is 300 × 100 pixels in mm?
It depends on the DPI it is printed at. At 300 DPI it is 25.4 × 8.5 mm; at 96 DPI (screens) it is 79.4 × 26.5 mm. The table on this page lists more.
How many KB is a 300 × 100 photo?
It varies with the picture and the JPEG quality. Set your form’s maximum KB in the tool; it keeps the best quality that fits. A plain background and even light keep the file smaller.