OK Toolbox, A Professional Online Toolbox

1. Calculator
   Mathematical calculation of addition, subtraction, multiplication, division, root square, PI, reciprocal, sine and cosine

2. Date Calculator
   You can calculate the number of days between dates, and calculate the number of days from today to a certain day in the past or the future

3. Image Character Recognition
   The characters in the image can be recognized online

4. Image Color Recognition
   Free online image color recognition tool, which can extract the main color of the image

5. Image to PDF
   You can combine multiple pictures of unlimited format and size into a complete PDF document

6. Text Encryption and Decryption
   Online text encryption and decryption tools, support AES, DES, RC4, rabbit, tripledes

7. ASCII Encode and Decode
   It can convert the local characters in the code into Unicode and solve the problem of garbled code encountered in programming

8. Base64 Encode and Decode
   Base64 encoding and decoding tools help you encode text into Base64 and decode Base64 into text

9. CSS Formatter
   CSS formatter can beautify compressed CSS code and compress CSS code

10. Cartoon Avatar Maker
    Free cartoon avatar online production tool, you can freely choose the facial expression, facial features and clothing of the characters

11. Character Counter
    This tool can quickly calculate the number of words, letters, numbers, punctuation and Chinese characters in the article

12. Color Picker
    The color code, hex and RGB values can be obtained through the color selector, color table and color name

13. Decimal Converter
    The online binary converter provides binary, octal, decimal, hexadecimal and other mutual conversion functions

14. Face Recognition
    It can automatically recognize the faces in the photos and cut out the head pictures in batches

15. Flow Chart
    Online flow chart tool, with built-in multiple graphics such as rectangle, circle, line, arrow and flow chart, supports exporting SVG/PNG/JPG.

16. GIF Generator
    You can make GIF pictures online and combine multiple static pictures into one dynamic picture

17. Gantt Chart
    You can use this tool to draw Gantt Chart, which is convenient for project management and schedule management

18. Htpasswd Generator
    Generate Apache HTTP basic authentication password file online

19. ICO Converter
    You can crop pictures online and convert them into favicon.ico files

20. Image Format Converter
    Can modify the image format, support JPG, PNG, BMP, JPEG, GIF, SVG, webp, ICO formats

21. Image Watermarking
    The image watermarking tool can customize the text, font size, font color, transparency and text spacing

22. Image compressor
    It can help you compress PNG/JPEG images online

23. Image to Base64
    You can convert pictures to Base64 or Base64 to pictures

24. JSON Formatter
    The JSON formatter can beautify the compressed JSON code or compress the JSON code

25. LED Scrolling Text
    Led subtitle scrolling tool, suitable for playing work content, text reminders, advertising slogans, etc. on computers or mobile phones

26. Letter Case Converter
    The tool can convert uppercase letters to lowercase letters, and also convert lowercase letters to uppercase letters

27. MD5 Encryption
    It can convert text into MD5 and generate 32-bit and 16-bit MD5 ciphertext

28. Markdown Editor
    You can write markdown code and preview it in real time in the browser

29. Mind Map
    You can make mind map, directory organization chart, fishbone chart, logical structure chart, organization chart online

30. Morse Code
    Morse code encoding and decoding tools help you encode text into Morse code and decode Morse code into text

31. Photo Background Color
    You can modify the background color and size of photos online

32. Photo to Sketch
    A tool for automatically generating hand drawn style photos, which can set the blur level of hand drawn pictures

33. Port Scanner
    Scan common or specified ports to see if they are open

34. QR Code Generator
    The tool can generate QR code pictures from web addresses or text, and can set the format, fault tolerance, size, color and logo of QR codes

35. Random Number Generator
    One number can be generated randomly, or multiple random numbers can be generated in batch at a time

36. Random Password Generator
    You can randomly generate a password containing numbers, uppercase letters, lowercase letters and symbols

37. Regular Expression
    Online regular expression testing tools can help you quickly test whether the regular expressions you write are correct

38. SQL Formatter
    SQL formatter can beautify the compressed SQL code or compress the SQL code

39. Table Data Conversion
    A tool that can convert table data into JSON format

40. Text Compare
    The two texts can be compared online to detect the difference between the two texts

41. Text Deduplication
    This tool can automatically remove duplicate content lines in articles or text

42. Text Flow Chart
    A tool for drawing flow chart using ASCII code

43. Timestamp Converter
    The tool can convert timestamps into date and time, and can also convert date and time into timestamps

44. URL Encode and Decode
    You can convert a normal URL to an encoded URL or an encoded URL to a normal URL

45. UTF-8 Encode and Decode
    You can convert text to UTF-8 or UTF-8 to text

46. Unicode Encode and Decode
    You can convert text to unicode or Unicode to text

47. XML Formatter
    The XML formatter can beautify the compressed XML code or compress the XML code

48. XML to JSON
    The tool can convert XML to JSON or JSON to XML