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

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