1, Use the "Settings" option in the "Images" menu: in the "S

1, use the "Adjust" option in the "Images" menu: in the "Adjust" drop-down menu, select "Size" and then enter the new width and height of the image you want. Photoshop will automatically adjust the proportion of the image to suit the new size.

2, use the "Optimize the image" option in the "Images" menu: this option can tighten the image and reduce its file size without affecting the quality of the image. Just click "Optimize the image" and then operate according to the hint.

3, use the "Save as" option in the "File" menu: in the "Save as a separate" pair
In the word box, select a format such as "JPEG" or "PNG" and set a smaller resolution. This will greatly reduce the file size of the image.

Please note that in order to maintain the quality of the image, do not shrink it to a very small size. If you are creating a web page or a mobile application, then using modern formats such as WebP or SVG may be more effective.

ps How do you shrink the image?

How can you shrink the image in Photoshop, can be converted freely by
Or adjust the image size implementation, the specific method is as follows:

method one: free transformation (recommended) step:
selected after the image the material layer ( ensure that the background has been removed).

press the shortcut 0 Ctrl+T1 (Windows) or 2 Command+T3 (Mac), 8 controls will appear around the image
Point.

3. Move the mouse near the control point, hold the left button and drag the image to scale when the light marker turns into a two-way arrow.

4. Hold the Shift key to scale equally (keep proportion), hold the Alt key to scale based on the center point.

5. Adjust to the appropriate size and confirm using Enter

0 .
1 method II: adjust the image size (applicable to overall scale)
( step:

converts the material layer to the smart object (right key layer → converts to the smart object), avoiding direct scaling that leads to image quality loss.

2. Double-click the smart object layer and open the smart object editing window.

0 3. Press 1 Ctrl+Alt+I2 (Windows) or 3 C
Ommand+Option+I (Mac), pop up the "Image Size" dialog box.
4. Enter the target size (such as width or height), select the "restricted ratio" and keep the proportion scaled.
5. After clicking on "Determined", press Ctrl+S to save the smart object and return to the main document to see the scaled effect. note free conversion
0 is suitable for rapid adjustment of individual elements
The material size, operation is flexible but may affect the quality of the image (when not intelligent object). Smart object scale can retain the original image quality, suitable for scenes that require multiple modifications or batch adjustments, but note:
is converted to an intelligent object, all the copied layers will be modified simultaneously.
Smart object file volume is larger and may increase the storage burden.
Example effect Original lamp cage material is too large: by free conversion shrink and copy multiple lamp cages:
selected the appropriate method according to requirements, free conversion is suitable for fast
Quick adjustment, smart object scaling is suitable for fine control.
ps How to cut the picture small
How to cut the picture small in the PS can be done as follows:
Open the picture: Start the PS software, import the image that needs to be cut. Select the cut tool: Find the cut tool in the toolbar
0 (shortcut C), click or activate the shortcut.
1 Adjust the cut box
2:<
p> A dragable control box will appear around the image, moving the mouse to the edge or corner of the control point.
drag control point: drag the edge or corner of the control point, narrow the cutting range.
keep the ratio: Press the Shift key to drag the corner control point to cut according to the proportion of the original chart; freely adjust the width ratio, drag directly.
confirms the cutting range
0 :
1 adjust the cutting range, click the option bar
In the link button (or press the back key) confirm the cut.
images will be retained according to the cut box range and the rest will be deleted.
See the result : After the cut, the image size will become smaller and the screen range will be synchronized.
Note: : 0 the cut operation is irreversible, it is recommended to copy the graphic layer (Ctrl+J) and then cut, retaining the original image. This method applies to all PS versions, operation logic consistent. 12
to shrink the image size in Photoshop, you can adjust the image size functionality or set the quality parameter implementation when "exported as". Specific action is as follows:
method One: by "image size" adjust open the image: start Photoshop, click "file" → "open", select the image you want to shrink. adjust the size:
click on the "image" in the top menu bar → "image size" (shortcut Alt+Ct)
rl+I).
In the pop-up window, you can change the "width", "high" or "resolution" number values. Select the "restricted ratio" to keep the width unchanged and avoid image deformation.
enter the target size (such as pixels, centimeters and other units), or directly adjust the percentage (such as shrinking to 50%).
confirm and save: After clicking "defined", select "file" → "stored as", save as JPEG, PNG and other formats (JPEG is suitable for photos, PNG is suitable for transparent backgrounds or simple graphics).
By "Export as" setting quality open the image: the same method first, import the image. export settings:
click on "File"→"Export"→"Export as" (or "Fast Export to PNG").
in the pop-up window, select the format (such as JPEG), drag the "Quality" slider adjust the degree of compression (the lower the quality, the file smaller, but the possible loss of details).
can select "Convert to sRGB" to be compatible with web display.
0
File : specify the saved path, click on "Export". Note items backup prototype : Recommended to copy prototype before shrinkage, avoid coverage resulting in no recovery. size and quality balance : excessive shrinkage can cause blur or tear, need to be adjusted according to the purpose. For example, web graphics can adequately reduce the quality, printed images need to maintain high resolution. units choose : In the "image size" window, pay attention units (pixels, inches, centimeters, etc), ensure that the symbols
Requirements (such as the screen displays common pixels, printing takes inches or centimeters). re-sampling: If you want to significantly reduce the size, you can pick "re-sampling" and select algorithms (such as "two cubes" more smoothly), but new pixels will be generated, which may affect the details. Additional tools (not Photoshop)
For quick compression and not relying on Photoshop, refer to the following tools:
online tool:
Compressor.ioIn>: supports JPEG, PNG and other formats, automatically optimizes size.
TinyPNG: high pressure PNG, intelligent preservation of transparency and low quality loss.
Pngyu: supports PNG/JPG, simple operation and suitable for bulk processing.
Desktop software
0 :
1
2 GIMP
3 (free): via “Image” → “Scale Image”
ImageMagick (Command Line): Suitable for technical users, quickly scale through instructions (such as convert input.jpg -resize 50% output.jpg).
Summary: The core of scaling images in Photoshop is to adjust physical size or compress quality when "exported to" by "image size".
Bit selection and quality balance, other tools can be used as alternatives.