Card Tools Local processing only — nothing is uploaded, cached, or stored. 中文
Tool Menu
Text Replace Add Prefix & Suffix Join & Split Lines Delete by Position Trim Spaces & Blank Lines Random Code Generator Duplicate Lines Remove Duplicates Split into Batches Batch Card Generator Serial Number Tool Shuffle & Sort Sitemap

About Us

1. About This Site

Card Tools is a completely free online suite of bulk card-processing utilities, built for the everyday handling of cards, serial numbers, redemption codes, activation codes, and similar text data. It offers 12 tools covering the most common workflows: generating, modifying, deduplicating, sorting, and batching card text.

Every feature on this site runs entirely inside your own browser. Your text data is never uploaded to a server, saved, archived, or cached — it is released as soon as you close the page. This is how we keep your card data safe by design.

2. 12 Free Tools

  • Text Replace: batch find-and-replace card text (regex supported; blank replacement deletes matches)
  • Add Prefix & Suffix: add a prefix and/or suffix to every line in bulk
  • Join & Split Lines: merge multiple lines or split them by a delimiter
  • Delete by Position: remove characters at a fixed position on every line
  • Trim Spaces & Blank Lines: strip spaces, blank lines, and leading/trailing whitespace
  • Random Code Generator: generate bulk card codes from a custom character set
  • Duplicate Lines: repeat each line a chosen number of times
  • Remove Duplicates: drop duplicate lines, keeping only the first occurrence
  • Split into Batches: group lines into batches of a fixed size for export
  • Batch Card Generator: generate a batch of cards by combining a prefix and suffix
  • Serial Number Tool: append serial numbers to cards in bulk (zero-padding supported)
  • Shuffle & Sort: randomize order or sort ascending/descending

3. Our Promise

Forever free: every tool is free to use. No sign-up, no login — just open the page and start working.

Local processing: all computation happens in your browser. Nothing is uploaded, cached, or archived.

Cross-platform: works on desktop, phone, and tablet. Nothing to install.

4. About the Author

This site is built and maintained by independent developer Cheng Laodeng, who keeps improving the tools and tutorials based on user feedback.

5. Contact Us

Suggestions, bug reports, and partnership inquiries are all welcome. Email us at: [email protected]

Want to see what's changed? Check the Version History.