Non-cascading replacement
Apply many rules simultaneously without earlier replacements unexpectedly feeding later rules.
Text transformation workbench
A local-first text transformation workbench for administrators and technical operators. Preview literal or regular-expression replacements side by side, manage reusable rule sets, and process sensitive content without uploading it anywhere.
If the file opens instead, use the link menu and choose “Save Link As…” (right-click or press and hold).

For system administrators, migration teams, support engineers, and anyone making repeatable changes across structured text.
Apply many rules simultaneously without earlier replacements unexpectedly feeding later rules.
Use straightforward text rules or slash-wrapped regular expressions with capture replacements.
Compare source and transformed text side by side with highlighting, line numbers, and character counts.
Import, export, invert, and reuse named JSON rule sets without creating an account.
Input, output, rules, configuration titles, and opened filenames stay in the page and are not persisted. Only interface preferences such as word wrap and scroll locking may be stored locally.
Ships as one readable HTML file with no runtime dependencies. The application works directly from file:// and requires no server, installation, or internet connection.
Current standalone release · readable HTML · no installation required
If the file opens instead, use the link menu and choose “Save Link As…” (right-click or press and hold).