Online intelligent compression picture size, picture compression amount
The use steps of online picture intelligent compression:
First, click the plus sign to add a picture to be compressed. At present, it is known to support the compression of many common image formats such as jpg and png. If the image is uploaded and compressed successfully, the image format is supported.
Secondly, you can modify the maximum width and height to which the picture needs to be compressed. The default is the original width and height dimensions of the picture, and the aspect ratio is automatically locked.
Third, you must set the maximum occupied space of the image file you expect to output after image compression. (required)
Fourthly, choose the algorithm of image generation. The default is the mixed priority algorithm, and the default algorithm can be used in most cases.
5. The set value of compression cannot be less than 1Kb, but the final effect of image compression can be less than 1Kb.
How to change the photo to below 1M? The first method is to modify with drawing tools, and the steps are as follows:
First, choose drawing as the way to open the picture, and choose the resizing tool;
Secondly, enter the proportion of the method, and then press OK. Remember to save it.
The second method is to modify with PS tool, and the steps are as follows:
First, use PS to open the file that needs us to modify;
Secondly, click the image, then click the image, select the image size and input the pixels to be modified, click OK, and then save it in jpg format.
Extended data
Photo format:
1, BMP format
Bitmap (foreign abbreviation: BMP, foreign full name: bitmap) is a standard image file format in Windows operating system, which can be supported by many Windows applications. With the popularity of Windows operating system and the development of rich Windows applications, BMP bitmap format is naturally widely used. This format is characterized by rich image information and almost no compression, but this leads to its inherent shortcomings, occupying too much disk space, so BMP is more popular on a single machine.
2.GIF format
GraphicsInterchangeFormat (GIF) was developed by CompuServe, a famous online information service organization in the United States, aiming at the limitation of network transmission bandwidth at that time.
GIF format is characterized by high compression ratio and less disk space, so this image format has been widely used soon. At first, GIF was only used to store a single still image (called GIF87a). Later, with the development of technology, several still images can be stored at the same time to form a continuous animation, which became one of the few formats that supported 2D animation at that time (called GIF89a).
3.JPEG format
JPEG is also the most common image format. It was developed by Joint _ Photographic _ Xperts _ Group (full name in foreign languages: Joint _ Photographic _ Xperts _ Group) and named as "ISO/KOOC-0/09/KOOC-0/8-/KOOC-0/". JPEG is just a common name.
The extension of JPEG files is. Jpg or. jpeg。 Because of its advanced compression technology, it uses lossy compression to delete redundant image and color data, and it can obtain a very high compression rate and display very rich and vivid images at the same time, in other words, it can obtain better image quality with the least disk space.
4.JPEG2000 format
JPEG2000 is also formulated by JPEG organization, and its official name is "ISO 15444". Compared with JPEG, JPEG 2000 has higher compression rate and is a new generation of still image compression technology with more new functions.
As an upgraded version of JPEG, JPEG2000 has a compression ratio about 30% higher than JPEG.
Unlike JPEG, JPEG2000 supports both lossy and lossless compression, while JPEG can only support lossy compression.
5.TIFF format
TagImage_ileFormat (TIFF) is a widely used image format in Mac. Developed jointly by Aldus and Microsoft, it was originally designed for cross-platform storage of scanned images. It is characterized by complex image format and much information stored. It is precisely because it stores a lot of subtle information of the image and the quality of the image is also improved, so it is very conducive to the reproduction of the original.
6.PSD format
This is a special format PhotoshopDocument(PSD) of the famous Adobe image processing software Photoshop. PSD is actually a "draft" of graphic design in Photoshop, which contains samples of various designs such as layers, channels and masks, so that the final design can be modified when the file is opened next time.
Among the various image formats supported by Photoshop, PSD has much faster access speed and more powerful functions than other formats. With the wider application of Photoshop, we have reason to believe that this format will gradually become popular.
7.PNG format
Portable _ etwork _ raphics (PNG) is a new network image format. At the end of 1994, because Unysis announced that GIF had a patented compression method, the author of GIF software was required to pay a certain fee, which prompted the birth of free png image format. PNG combines the advantages of GIF and JPG from the beginning, and intends to replace these two formats in one fell swoop.
8.SWF format
With Flash, we can make an animation with the suffix SWF(ShockwaveFormat), which can express rich multimedia forms in a relatively small volume. In the aspect of image transmission, you don't have to wait until all files are downloaded, you can watch them while downloading, so it is especially suitable for network transmission, especially in the case of poor transmission rate, which can achieve good results.
9.SVG format
Scalable _ ector _ graphics (SVG for short) can be regarded as the hottest image file format at present. It is based on XML (a subset of standard generalized markup language) and developed by World Wide Web Consortium. Strictly speaking, it should be an open standard vector graphics language, which allows you to design exciting and high-resolution Web graphics pages.
Users can draw images directly with codes, open SVG images with any word processing tools, and make the images interactive by modifying some codes, and they can be inserted into HTML at any time and viewed by browsers.
10, JPG format
Joint Photographic Expert Group (jpg in foreign language and JPEG in foreign language: joint _ photographic _ xpert _ group). JPEG pictures store a single raster image in 24-bit color. JPEG is a platform-independent format that supports the highest level of compression. However, this compression is lossy. Progressive JPEG files support interleaving.
1 1, hsb mode
The Hsb mode is defined based on the observation of color by human eyes. In this mode, all colors are described by hue or hue, saturation and brightness.
Graph is greater than1m. How can I make the picture less than 1M? Preparation tool: MicrosoftOfficePictureManager software.
1, selected
Computer desktop
Click the right mouse button and select MicrosoftOfficePictureManager as the open mode.
Second, after entering, find the "compressed picture" in changing the picture size in the toolbar on the right.
3. Select the compressed picture of the document in the options that appear.
4. After selection, you can see the original size and compressed size of the picture, and you can find that the compressed picture is less than1m.. Click OK below. So the compression is successful.