Using browser capabilities to process, your files will not be uploaded to the cloud.
Click the button to open files, or drag the file here
Supports all file formats, no limit on file size
- Filter
- Extension
- Letter Case
- Sequence
- Replace
- Insert
- Truncate
- Delete
- List
- Custom
- Execute JS
1. File filtering can be applied repeatedly
2. When filtering with file name and extension fields, new file names and new extensions are used
1. Modify file extension
2. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will have their extension modified (Just specify the conditions in the Filter, do not click the button in the Filter)
1. Change the case of file names
2. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
1. Generate a new file name using sequence number or string templates.
2. After replacing the sequence number or string template, the new file name needs to be a valid file name.
3. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
Default is empty. If filled in, the prefix 0 will be used to fill in if the number length is insufficient
Expression Syntax Description
| Category | Command | Parameter | Parameter Type | Parameter Limitations | Parameter Nullable | Parameter Desc | Command Desc | Example | Description |
|---|---|---|---|---|---|---|---|---|---|
| string | numberStringRand | length | int | ≥1 | no | specify the length of a numeric string | generate a string of random numeric characters of a specified length | ${numberStringRand@3} | generate a numeric string of length 3, which may start with 0 |
| numberStringRandEx | numChar | string | N/A | no | the format is 0|1|9 . Specify the number used to generate a random number string | generate a random length numeric string composed of specified numbers | ${numberStringRandEx@0|1|2|3|9@3@100} | generate a numeric string consisting of 0, 1, 2, 3, and 9 with a length between 3 and 100 | |
| minLength | int | ≥1 | no | minimum length of numeric string | |||||
| maxLength | int | ≥minLength | no | maximum length of numeric string | |||||
| lowerRand | minLength | int | ≥1 | no | minimum length of lowercase letter string | generate lowercase letter strings of random length | ${lowerRand@3@5} | generate a string consisting of lowercase letters with a length between 3 and 5 | |
| maxLength | int | ≥minLength | no | maximum length of lowercase letter string | |||||
| upperRand | minLength | int | ≥1 | no | minimum length of uppercase letter string | generate random length uppercase letter strings | ${upperRand@3@5} | generate a string consisting of uppercase letters with a length between 3 and 5 | |
| maxLength | int | ≥minLength | no | maximum length of uppercase letter string | |||||
| alphaNumberRand | minLength | int | ≥1 | no | minimum string length | generate a random length string composed of uppercase letters, lowercase letters, and numbers | ${alphaNumberRand@3@5} | generate a string of uppercase letters, lowercase letters, and numbers with a length between 3 and 5 | |
| maxLength | int | ≥minLength | no | maximum string length | |||||
| unicode | start | int (hex) | ≥00 | no | unicode character minimum codepoint, hexadecimal | generate random Unicode characters within the range | ${unicode@4E00@9FA5@3@5} | generate a string of random Chinese characters with a length between 3 and 5 | |
| end | int (hex) | ≤10FFFF | no | unicode character maximum codepoint, hexadecimal | |||||
| minLength | int | ≥1 | no | minimum string length | |||||
| maxLength | int | ≥minLength | no | maximum string length | |||||
| unicodeEx | rangeEx | string | N/A | no | unicode codepoint expression, can fill in multiple ranges. The supported forms are 00-FF,0256,4E00-9FA5 | generate random Unicode characters within the range | ${unicode@00-FF,0256,4E00-9FA5@3@5} | generate random strings with lengths between 3 and 5, within the range of 00-FF,0256,4E00-9FA5 | |
| minLength | int | ≥1 | no | minimum string length | |||||
| maxLength | int | ≥minLength | no | maximum string length | |||||
| select | strList | string | the format is str1|str2|str3 | no | list of candidate strings | randomly select a string from the list of candidate strings | ${select@152|137|148|1999} | random select 152, 137, 148, 1999 | |
| number | numberRangeRand | min | int or float | N/A | no | minimum value of random number, inclusive | generate random integers or floating-point numbers within a range | ${numberRangeRand@-1.237@3.989@4} | generate floating-point numbers greater than or equal to -1.237 and less than 3.989, with 4 digits retained after the decimal point |
| max | int or float | ＞min | no | maximum value of random number, exclusive | |||||
| precision | int | ≥0 | no | preserve precision after decimal point | |||||
| numberStep | start | bigint | any size integer | no | Increment starting integer | generate increasing integer numbers | ${numberStep@999999999999999999999999@-100@0@16} | generate numbers starting from 999999999999999999999999, increasing by -100, not padding, and displaying numbers in hexadecimal | |
| step | bigint | any size integer | no | incremental step size | |||||
| padding | int | ≥0 | no | number padding length, 0 is not padding. If pad to the specified length is required, use leading 0 padding | |||||
| radix | int | ≥2 ≤36 |
no | numeric base | |||||
| numberBigintRangeRand | min | bigint | any size integer | no | minimum value of random number, inclusive | generate random integers within a range, supporting integers of unlimited size | ${numberBigintRangeRand@-999999@9999999999999999@4@10} | generate integers greater than or equal to -999999 and less than 99999999999999. Use 0 alignment for numbers with a length of less than 4 digits, and display the numbers in base 10 | |
| max | bigint | any size integer, ＞min | no | maximum value of random number, exclusive | |||||
| padding | int | ≥0 | no | number padding length, 0 is not padding. If pad to the specified length is required, use leading 0 padding | |||||
| radix | int | ≥2 ≤36 |
no | numeric base | |||||
| numberGaussian | mean | float | N/A | no | mean value | generate random numbers that conform to a normal distribution | ${numberGaussian@0@1@3} | generate a random number with a normal distribution of 0 mean and 1 standard deviation, and retain 3 as a number after the decimal point in the result | |
| stdDev | float | ≥0 | no | standard deviation | |||||
| precision | int | ≥0 | no | number after decimal point to be retained | |||||
| numberGaussianRange | mean | float | ＞min, ＜max | no | mean value | generate random numbers within a range that conform to a normal distribution. Note: This command requires the correct setting of each parameter to ensure that the logical relationship of the parameters is correct | ${numberGaussianRange@0@0.5@3@-1@1} | generate a normal distribution of random numbers with an average of 0, a standard deviation of 0.5, and 3 decimal places, between -1 and 1 | |
| stdDev | float | ≥0 | no | standard deviation | |||||
| precision | int | ≥0 | no | number after decimal point to be retained | |||||
| min | float | N/A | no | minimum value of random number, inclusive | |||||
| max | float | >min | no | maximum value of random number, exclusive | |||||
| numberBigfloatRangeRand | min | floating point number of any size | N/A | no | minimum value of random number, inclusive | generate floating-point numbers of any size within the range, with the ability to save any number of digits after the decimal point | ${numberBigfloatRangeRand@-1111111111111111111.2222222222@333333333333333333333333333333333333333333333333333333333333.555555@100} | random generate floating-point numbers from -1111111111111111111.2222222222 to 333333333333333333333333333333333333333333333333333333333333.555555 , keep 100 digits after decimal point | |
| max | floating point number of any size | ＞min | no | maximum value of random number, exclusive | |||||
| precision | int | ≥0 | no | number after decimal point to be retained | |||||
| time | timeNow | format | string | time format string | no | time format string | generate a formatted string based on the current time | ${timeNow@X} | generate the current time string, format it as a Unix timestamp, in seconds |
| timeStep | format | string | time format string | no | time format string | generate an increasing or decreasing time series and format it in the specified time format | ${timeStep@YYYY-MM-DD HH:mm@2020-01-01 12:00:00@300000} | generate a time string starting from 2020-01-01 12:00:00, with an increment of 5 minutes. The format of the generated time string is YYYY-MM-DD HH:mm | |
| start | string | the format is 2022-01-03 20:59:59 or 2022-01-03 20:59:59.123 | no | start time | |||||
| stepMilli | int | N/A | no | time increasing step size, measured in milliseconds, supports positive or negative numbers | |||||
| timeRand | format | string | time format string | no | time format string | generate random time within the range and format it in the specified format | ${timeRand@x@2022-01-01 00:00:00@2023-01-01 00:00:00} | randomly generate a time between 2022-01-01 00:00:00 and 2023-01-01 00:00:00, and format it as a Unix timestamp in milliseconds | |
| start | string | the format is 2022-01-03 20:59:59 or 2022-01-03 20:59:59.123 | no | start time | |||||
| end | string | the format is 2022-01-03 20:59:59 or 2022-01-03 20:59:59.123, ≥start | no | end time | |||||
| expression | expr | exprContent | string | valid expression statements | no | expression statement, using expressions to generate fields. The expression supports using \index to reference other fields, such as \1 + \3 indicating the use of the sum of the first and third fields in the template as the value of this field. If the other fields referenced by the expression are of string type, the referenced fields need to be enclosed in single quotes. For example, '\3'. Multiple operators and mathematical functions are supported in expressions, please refer to the Expression Syntax for details. | use expressions to generate field values. | ${expr@\1 - sqrt(\3) + 100} | Subtract the square root of the value of the third field from the value of the first field in the template, and then add 100. |
An integer number starting from 0, if the position exceeds the length of the file name, a new file name will not be inserted.
1. Replace strings in file names, support regular text replacement and regular expression replacement.
2. After replacing the text, the new file name needs to be a valid file name.
3. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
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1. Insert the text into the specified location as the new file name.
2. After inserting the text, the new file name needs to be a valid file name.
3. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
An integer number starting from 0, if the position exceeds the length of the file name, a new file name will not be inserted.
1. Extract the specified part from the file name as the new file name.
2. After truncating characters, the new file name needs to be a valid file name.
3. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
Numbers greater than or equal to 0 indicate truncation from front to back, while numbers less than 0 indicate truncation from back to front
Greater than or equal to 1, empty indicates truncation to the end
1. Remove characters from the file name or keep the characters in the file name.
2. After removing or retaining the selected characters, the new file name needs to be a valid file name.
3. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
1. Modify the file name through the name list. The number of names in the name list needs to be the same as the number of files in the table.
An integer number starting from 0, if the position exceeds the length of the file name, a new file name will not be inserted.
1. Modify the file name through the corresponding list of file names. The format of each line in the list is [file name][separator][new file name]. The number of lists can be different from the number of files. If the new file name does not have an extension, the extension of the original file name will be automatically used.
2. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
1. Execute JavaScript code, modify file name
2. You can specify conditions in the Filter. If filtering conditions are used, only files that meet the filtering conditions will be modified (Just specify the conditions in the Filter, do not click the button in the Filter)
| NO. | File Name | New File Name | Size | Modify Time | Operation |
|---|
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- Open File or Open Folder : This tool supports batch opening of files. Support opening folders and reading all files within the folder. Unrestricted file size and count. All processing of this tool is done in the browser, and files will not be uploaded to the cloud.
- Preview : The preview operation will result in changes. It is recommended that you preview the changes before applying them.
- Cancel Preview : Cancel the preview and restore the file list to its previous state.
- Apply : Apply change operations.
- Filter : Filter the files in the list using the selected criteria. Support selecting files, excluding files, and filtering files by executing JS code.
- Extension : Modify the file extension.
- Letter Case : Change the capitalization of file names.
- Sequence : Generate a new file name using a number sequence or string template.
- Replace : Use text replacement or regular expression replacement to generate a new file name.
- Insert : Insert a new string into the file name to generate a new file name. Support selecting different insertion positions.
- Truncate : In the file name, truncate the specified part as the new file name.
- Delete : Remove the specified characters from the file name.
- List : Generate a new file name based on the input string list.
- Custom : Generate new file name based on the comparison list between the file name and the new file name.
- Execute JS : Execute custom JavaScript code to generate a new file name.
