Resize Image to Stamp Size
Prepare a portrait with the common 20x25 mm Stamp Size default at 300 DPI, then change the dimensions if your application form specifies another size.
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Create a Stamp Size portrait for the stated form rules
Use a practical starting size for school, exam, ID, and application forms while keeping the final dimensions and submission method under your control.
20x25 mm default
Start with a commonly used Stamp Size value of 20x25 mm, equal to 2x2.5 cm, without presenting it as an official worldwide standard.
300 DPI print setup
The page opens at 300 DPI, producing approximately 236x295 pixels for the default physical size while preserving the editable print settings.
Alternative form sizes
Enter 25x30 mm, 25x35 mm, or another size when the school, exam board, employer, agency, or ID form publishes different requirements.
Portrait framing control
Position the face and shoulders inside the compact portrait frame, leaving the headroom and background expected by the receiving application.
JPG output by default
Create a JPG by default for common form and printing workflows, while reviewing the accepted format stated by the portal or document provider.
Print or digital use
Download the resized portrait for a physical form or digital upload, then verify the final dimensions, DPI, format, and visual clarity.
Prepare a Stamp Size photo in three steps
Begin with the default dimensions, but keep the current application or print instructions beside you while editing.
Upload a clear portrait
Choose a front-facing photo with the background, expression, clothing, and head position required by the form.
Set the required millimetres
Keep 20x25 mm at 300 DPI or replace the width and height with the exact values listed by the application.
Resize and verify the file
Download the JPG and check its framing and technical details before printing it or attaching it to a digital form.
Prepare a Stamp Size portrait
Use the 20x25 mm starting point or enter the exact dimensions from your school, exam, ID, or application form.
Stamp Size photo resizing FAQ
Answers about the 20x25 mm default, 300 DPI, alternative dimensions, portrait framing, printing, and digital submission.
The default is 20x25 mm, or 2x2.5 cm. At 300 DPI this is approximately 236x295 pixels. It is a common starting value, not an official global standard for every form or organization.
No. Some applications request 25x30 mm, 25x35 mm, or another size. Read the current form or portal instructions and edit the width and height whenever they differ from this page’s default.
300 DPI is commonly used for small printed portraits and gives about 236x295 pixels at 20x25 mm. Follow the receiving organization if it publishes another DPI or pixel requirement.
Yes. Select the custom option and enter the required width and height in millimetres. The form instructions take priority over the default and over other common Stamp Size examples.
Use a clear front-facing source and keep the head, hair, chin, and required shoulder area visible. Match any background, headroom, expression, or clothing guidance provided by the application.
Yes, if the output matches that specific form. Schools, exam boards, ID processes, employers, and government services can set different dimensions and file rules, so verify each one separately.
Use the method requested by the form. For printing, verify physical size and DPI; for digital submission, also check the required pixel dimensions, file format, and maximum file size.
No. Stamp Size is used differently across services and regions. This page provides 20x25 mm as a common default while allowing you to enter 25x30 mm, 25x35 mm, or any stated requirement.
Popular resize presets
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