Text Watermarks

Updated on 2024-08-09 GMT+08:00

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You can configure the size, font, and color for text images. Table 1 describes the parameters.

**Table 1** Text watermark parameters
Parameter	Value Description	Code Example
text	Mandatory for adding text watermarks NOTICE: The content must be URL-safe Base64 encoded in the encodeText = url_safe_base64_encode(fontText) format, with a maximum of 64 characters (16 full-width characters at most).	image/watermark,text_SGVsbG8g5Zu- 54mH5pyN5YqhIQ,size_60,color_FF0000,type_ ZmFuZ3poZW5nc2h1c29uZw==,g_center,rotate_30
size	Optional. It represents the size of a text watermark, ranging from 0 (exclusive) to 1000 (inclusive). The default value is 40.
type	Optional. It represents the font of a text watermark. Available values are those shown in Table 2. The default value is wqy-zenhei (d3F5LXplbmhlaQ after encoding). NOTICE: - The content must be URL-safe Base64 encoded in the encodeText = url_safe_base64_encode(fontType) format. - Line breaks are currently not supported.
color	Optional. It represents the color of a text watermark. The value is a six-digit hexadecimal code, from 000000 (default value, representing black) to FFFFFF.
shadow	Optional. It represents the transparency of a text watermark. The value ranges from 0 (exclusive) to 100 (inclusive).
fill	Optional. It represents the filling effect of a text watermark. The value can be 0 or 1. 0: filling not applied 1: filling applied
rotate	Optional. It represents the clockwise rotation angle of a text watermark. The value ranges from 0 (exclusive) to 360 (exclusive).

**Table 2** Text font encoding
Parameter	Value After URL-Safe Base64 Encoding	Value Description	Remarks
droidsansfallback	ZHJvaWRzYW5zZmFsbGJhY2s=	DroidSansFallback	According to Request for Comments (RFC), the fuller "=" can be omitted, and the value becomes ZHJvaWRzYW5zZmFsbGJhY2s.
fangzhengfangsong	ZmFuZ3poZW5nZmFuZ3Nvbmc=	FZFongSong	According to RFC, the fuller "=" can be omitted, and the value becomes ZmFuZ3poZW5nZmFuZ3Nvbmc.
fangzhengheiti	ZmFuZ3poZW5naGVpdGk=	FZSimHei	According to RFC, the fuller "=" can be omitted, and the value becomes ZmFuZ3poZW5naGVpdGk.
fangzhengkaiti	ZmFuZ3poZW5na2FpdGk=	FZKaiTi	According to RFC, the fuller "=" can be omitted, and the value becomes ZmFuZ3poZW5na2FpdGk.
fangzhengshusong	ZmFuZ3poZW5nc2h1c29uZw==	FZShuSong	According to RFC, the fuller "=" can be omitted, and the value becomes ZmFuZ3poZW5nc2h1c29uZw.
wqy-microhei	d3F5LW1pY3JvaGVp	WenQuanYi Micro Hei	-
wqy-zenhei	d3F5LXplbmhlaQ==	WenQuanYi Zen Hei	According to RFC, the fuller "=" can be omitted, and the value becomes d3F5LXplbmhlaQ.

Examples of Making API Calls

Add the text watermark Hello to an image, with the text size set to 60, color to red, and font to FZShuSong.
Relevant parameters:

Safe Base64 code: SGVsbG8g5Zu, namely text_SGVsbG8g5Zu

Text size: size_60

Text color: color_FF0000

Text font: type_ZmFuZ3poZW5nc2h1c29uZw==

Request URL:

https://hw-image-demo.obs.ap-southeast-1.myhuaweicloud.com/example.jpg?x-image-process=image/watermark,text_SGVsbG8g5Zu,size_60,color_FF0000,type_ZmFuZ3poZW5nc2h1c29uZw==
Clockwise rotate a text watermark through an angle of 30 degrees and add it to the center of an image. Keep other parameters the same as those in the previous example.
https://hw-image-demo.obs.ap-southeast-1.myhuaweicloud.com/example.jpg?x-image-process=image/watermark,text_SGVsbG8g5Zu,size_60,color_FF0000,type_ZmFuZ3poZW5nc2h1c29uZw==,g_center,rotate_30
Add image and text watermarks at the same time. Add text watermark Hello at the bottom right, with the size set to 60, shadow to 50, and color to red.
Add image watermark logo.png, with both horizontal and vertical margins set to 10.

Set the transparency of both text and image watermarks to 50 and put the image watermark in front and the text watermark behind, in the bottom alignment.

https://hw-image-demo.obs.ap-southeast-1.myhuaweicloud.com/example.jpg?x-image-process=image/watermark,image_aHctaW1hZ2UtZGVtby9sb2dvLnBuZw==,text_SGVsbG8g5Zu,size_60,color_FF0000,shadow_50,type_ZmFuZ3poZW5nc2h1c29uZw==,g_br,x_10,y_10,align_2,order_0
Add an image watermark first and then a text watermark. Add text watermark Hello at the bottom right, with the size set to 60 and color to red.
Add image watermark logo.png, with a horizontal margin of 40 and a vertical margin of 10.

Set the transparency of the image watermark to 90.

https://hw-image-demo.obs.ap-southeast-1.myhuaweicloud.com/example.jpg?x-image-process=image/watermark,image_aHctaW1hZ2UtZGVtby9sb2dvLnBuZw==,g_br,t_90,x_45,y_10/watermark,text_SGVsbG8g5Zu,size_60,color_FF0000,type_ZmFuZ3poZW5nc2h1c29uZw==,g_br,x_0,y_330

Parent topic: Watermarking Images

Previous topic: Image Watermarks

Next topic: Converting Image Formats

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