Online background remover website, you can easily remove the background of a photo after uploading it, and then download it in PNG file format.
2020.1224 Update: Seems to have ended service QAQ
Dropjar
This is a file upload space without registration, where you feel the most comfortable. The most attractive part is that the background of the website is a collage of illustrations or photography works, which is also a form of advertisement. The design is visually appealing, and the website is ignited with a passion for design. I think the Chinese name of this website should be "File Bottle", because the upload interface is shaped like a bottle. You can upload a file up to 10 GB, and if it exceeds 7 days, the file will disappear just like a bottle lost in the sea, avoiding the risk of file leakage. The link to the author's website is located in the bottom right corner of each work. Due to the high-quality advertising materials provided by illustrators or photographers, the website has no design, but still looks pleasing to the eye. Among all the free spaces, Dropjar is more attractive to users because it always has unexpected and beautiful pictures.
2020.1224 Update: Seems to have ended service QAQ
Colorrrs
按下空白鍵，就會切換一次背景顏色，並出現顏色的 RGB 色號，一個簡單的小網站，想不到主色風格，來這裡一邊喝咖啡，一邊狂點空白鍵找靈感吧。
Colour lovers
A good website for color scheme combinations, "Flatuicolors" not only has a color tool but also features a community aspect. You can follow specific people's color styles, discuss color schemes with others, or even challenge others to create a color scheme. The site also combines different graphics for different color combinations. This website is perfect for finding color friends. (It's a bit weird somewhere~)
wesendit
How to send large files to clients? If the file size is several GB, you can use the website Wesendit to upload files up to 5 GB. And if you register, you can increase the upload size. Fun fact: if the file is not downloaded within 7 days, it will automatically explode. No registration is required but registering can increase the upload size.
codesign
The customer is telling you over the phone while reviewing the draft: "Make this bigger, change that color to yellow." It's hard to keep track of what to make bigger and which blue to change to yellow. Now, with this website, you can upload your design and the client or supervisor can leave notes with suggested revisions on the parts that need to be changed. These notes will become to-do items and can be worked on one by one, making the proofreading process more efficient.
Update: 12/9/2020 - The service seems to have ended. QAQ
500px
A photography-lovers must-know platform for sharing their works, it's full of amazing photography pieces. Download their app on your phone and you'll have a complete world photo collection, the interface is just like flipping through a book, making it a great tool for inspiration.
taaze
A good website for finding second-hand design books, in addition to general books, there are also very rare original design books or illustration annuals, a good place to treasure hunt. You can also put up your own books for sale by downloading the App and scanning the book barcode.
Swiffy
You can convert Flash's SWF file into HTML5 format, so that it can be directly played on the web and mobile devices without installing a Flash player. This tool is provided by Google, and many cases have been handled by it. Quickly convert the Flash animation on hand into a web format.
Kuler
Adobe's color scheme website, Kuler, finally has a Chinese version (excited dance). Kuler has a lot of color combinations. After logging in to your Adobe account, you can save your favorite color combinations, which can be directly inserted into the Photoshop or Illustrator color swatches, or even upload photos to let Kuler analyze the colors and transform them into your own color swatch combination. Of course, you can also share it with everyone as a color reference. It can only be said that Adobe has impressed us (bowing).
Gridzzly
The online grid paper generator can create a grid on a sheet of paper, just print it out! This is very convenient for sketching and saves money, besides the grid, there are also dot and six-box graph options available.
Google Material Design
iOS interface design guidelines, all developers must read before designing, besides phone interface, they can also learn many arrangement and color matching knowledge from it.