IMAGE / RESIZE / CENTIMETERS
Resize your photo to an exact size in cm
Set width, height and DPI in centimeters, inches, or pixels — for passport photos, government forms, or college applications. Everything runs on your device; nothing is uploaded anywhere.
How to resize an image in CM
Many government portals, job applications, and college admission forms ask for a photo size in centimeters rather than pixels — for example, a 3.5cm x 4.5cm passport photo. A photo taken with a phone or camera is rarely already in that exact size, so it needs to be resized. This tool lets you convert a photo to an exact size just by entering the width, height, and DPI — no design software needed.
Step-by-step guide:
- Upload your photo — tap the box above or drag and drop your image. You can upload up to 10 images at once.
- Set the width and height — enter the size you need in centimeters (for example, 3.5 x 4.5 for a passport photo, or whatever your form requires).
- Choose the DPI — 300 DPI for printing, and 150–200 DPI is usually enough for online uploads.
- Lock the aspect ratio (optional) — so the height adjusts automatically when you change the width.
- Set a target file size (optional) — if your form requires “under 50KB”, enter the target KB and the tool will compress it automatically.
- Choose an output format — JPG, PNG, or WEBP.
- Click “Resize images” and download each photo.
Where is this tool used?
Resizing a photo to an exact size and file limit is required in many places:
What is DPI, and which DPI should you use?
DPI (Dots Per Inch) determines how sharp a photo looks when printed. The higher the DPI, the more detail — but the file size increases too.
- 72–96 DPI — for viewing on screen or uploading to a website.
- 150–200 DPI — enough for most online form uploads.
- 300 DPI — the standard for passport photos and high-quality printing.
- 600 DPI — for professional printing or studio-quality output.
Key features of this tool
- Exact cm sizing — set any custom width and height in centimeters; no need to calculate pixels yourself.
- DPI control — adjust for both print and digital use cases.
- Compress to a KB target — shrink the image to match a form’s file size limit.
- 100% private — everything is processed in your browser; no image is ever uploaded to a server.
- Multiple images at once — resize up to 10 photos in a single batch.
Frequently asked questions (FAQ)
Does this tool upload my photo to a server?
No. The entire resizing process happens in your browser using canvas, so your photo never leaves your device.
What’s the correct size for a passport photo?
Most Indian government forms ask for 3.5cm x 4.5cm at 200–300 DPI — but requirements vary by form, so always check the specific instructions.
What if I need the file size to be under 50KB?
Enter 50 in the “Target file size” field — the tool will automatically adjust the quality to bring the file under that size.
Is this tool free to use?
Yes, it’s completely free and doesn’t require any sign-up.