420x525 Pixels Photo Converter — Width 35mm/1.4 in × Height 45mm/1.75 in (10–20 KB)
420 × 525 pixels is the exact preferred dimension for the Sarathi Parivahan Driving Licence rule: 'width: 35mm/1.4 inches (minimum of 420 pixels), height: 45mm/1.75 inches (minimum of 525 pixels), 10–20 KB'.
420x525 px (35x45 mm) specification
| Requirement | Value |
|---|---|
| Exact portal rule | Width: 35mm/1.4 inches (minimum of 420 pixels), Height: 45mm/1.75 inches (minimum of 525 pixels) |
| Preferred pixel size | Width × Height — 420 × 525 pixels (4:5 aspect ratio) |
| Photo file size | 10 KB to 20 KB, JPG / JPEG only |
| Matching signature box | 256 × 64 pixels (width 35 mm/1.4 in × height 9 mm/0.35 in), 10–20 KB JPG |
| Equivalent DPI | 300 DPI across a 1.4 × 1.75 inch (35 × 45 mm) passport frame |
| Used by | Sarathi Parivahan Sewa (Learner's Licence, Driving Licence renewal, International DL) |
Source: Photo and Signature Scan & Upload Process (Sarathi, MoRTH) (undated PDF on the live Sarathi portal, read September 2026). checked on 2026-09-06. The PDF prints the signature width as '35cm' where 35 mm (1.4 inch) is meant — an internal typo in the official document.
Decoding the Exact Sarathi Parivahan 420 × 525 Pixel Rule
If you are applying for a Learner's Licence (LL), a permanent Driving Licence (DL), a renewal, or an address change on Sarathi Parivahan (sarathi.parivahan.gov.in), the upload page displays this exact instruction string:
"Width: 35mm/1.4 inches (minimum of 420 pixels), Height: 45mm/1.75 inches (minimum of 525 pixels), Width × Height — 420 × 525 pixels (preferred), file size 10–20 KB in JPG/JPEG format."
Thousands of applicants copy and paste that entire error message into Google because almost every generic "3.5 × 4.5 cm passport photo maker" produces 413 × 531 pixels—and Sarathi rejects 413 × 531 immediately!
The arithmetic behind 420 × 525 vs 413 × 531
Why does a 35 × 45 mm photo become 420 × 525 on Parivahan instead of 413 × 531?
- In exact metric conversion,
35 mm ÷ 25.4 mm/inch × 300 DPI = 413.38 px(413 px), and45 mm ÷ 25.4 mm/inch × 300 DPI = 531.49 px(531 px). - However, the authors of the Ministry of Road Transport & Highways (
PhotoSign.pdf) rounded the inch equivalents to 1.4 inches × 1.75 inches first, and then multiplied by 300 DPI: 1.4 inches × 300 DPI = 420 pixels1.75 inches × 300 DPI = 525 pixels
Because the portal enforces width >= 420 px and height >= 525 px (with 420 × 525 preferred), a 413 px wide image falls 7 pixels short of the minimum width wall.
Both Sarathi uploads on one page: 420 × 525 Photo + 256 × 64 Signature
Our dual-tab workbench at the top of this page is pre-loaded with both official Sarathi Parivahan specifications:
- Tab 1 — Photograph:
420 × 525 pixels,10 KB to 20 KB,.jpgformat. - Tab 2 — Signature:
256 × 64 pixels(width 35 mm / 1.4 in × height 9 mm / 0.35 in),10 KB to 20 KB,.jpgformat.
Upload your photo in Tab 1, download the finished 420 × 525 JPEG, then click Tab 2 to prepare your 256 × 64 signature in under thirty seconds.
How it works
- Keep the 'Photo (420×525, 10–20 KB)' tab active in the tool above and select your portrait photo.
- Leave Name and Date blank (Sarathi Parivahan does not want a caption strip on a Driving Licence photo).
- Click 'Resize & Download' — the image is cropped and resized to 420 × 525 pixels and encoded between 10 KB and 20 KB.
- Need your signature too? Click the 'Signature (256×64, 10–20 KB)' tab right beside Photo and upload your signature on white paper.