Compress image size

Compress images to the file size limit of an online application, or resize them to exact pixels. Online applications to the Immigration Department accept files of 5 MB or below; supporting documents for an HKSAR passport must be 2 MB or below. Up to 50 images can be processed at once.

Choose a requirement

Custom

Please choose the requirement of the website where you will upload the file. If it is not listed, choose “Custom” and enter the size in step 3.

Name

Photographs for exam forms and identity documents must be cropped to size with the correct background. Please use the passport size photo maker.

Upload images

You can also drag images here.

You can choose up to 50 images at a time. Supported formats: JPG, PNG, WebP, HEIC, GIF, BMP, AVIF.

Set file size and dimensions

File size

For 1 MB, enter 1000. Leave a box blank for no limit.

Format
Dimensions

The original width and height are kept.

Check and download

After you upload images, check each requirement here and download.

Image upload requirements

The requirements are taken from the official notice of each organisation. Please follow the notice for your own exam or application, as it may change every year. Photograph requirements are listed in the passport size photo maker.

NameFile sizeDimensionsFormatSource
File size
Up to 5 MBNot more than 5 MBNot specifiedNot specifiedGovHK, GovHK, Immigration Department
Up to 2 MBNot more than 2 MBNot specifiedJPEG, GIF or TIFGovHK
Up to 1 MBNot more than 1 MBNot specifiedJPGThe University of Hong Kong, The Hong Kong Polytechnic University, Hong Kong Baptist University
Pixel size
600×800Not specified600 × 800 pixelsNot specifiedOctopus, Vocational Training Council