Fixed Width ・ Free native tool

Fixed Width Data Parser

Cut fixed column width data according to field names and width specifications, and output the table to JSON or CSV.

No uploadsMobile-friendlyTheme support

What is a fixed column width text parser?

Cut fixed column width data according to field names and width specifications, and output the table to JSON or CSV. ToolHub places the core computing entirely within the browser, allowing immediate use on both desktop and mobile devices, without the need to register an account or send content to the backend.

How to use this tool?

  1. Enter the data according to the field prompts and select the required processing method.
  2. Click "Process Now" to view the results, indicator summary and necessary error messages.
  3. After confirming that the content meets actual needs, you can copy the results or download them into files for further use.

Suitable use cases

Old system reports, bank batch files, host data and plain text records. All processing is completed in the current page, which is especially suitable for workflows that do not want to post internal data to remote services.

Interpretation of results and precautions

Chinese character width may be calculated in Bytes or display width in different systems. This tool uses JavaScript characters. Tools will validate basic input formats and provide readable error messages, but production environments should still be reconfirmed against source specifications, business rules, or professional requirements.

Browser and device support

We recommend using the latest version of Chrome, Edge, Firefox, or Safari. The page supports dark, light and other website themes, and adjusts the fields and results layout for mobile, tablet and desktop widths.

Frequently Asked Questions

Will the fixed-width text parser upload data to the server?
No. Tool functions are executed directly within the current browser tab, and input and generated results will not be uploaded or saved by ToolHub.
What use cases are fixed-width text parsers suitable for?
Old system reports, bank batch files, host data and plain text records
Do I need to install software before using the fixed column width text parser?
No need. Use a desktop or mobile browser that supports modern JavaScript, and no account is required.
What are the limitations of this tool?
Chinese character width may be calculated in Bytes or display width in different systems. This tool uses JavaScript characters.
Is manual inspection required after the results are generated?
Needed. Tools can assist with calculations, conversions, or formatting, but before going online, importing data, or making business decisions, the results should still be reviewed according to actual specifications.