Text Tools
6 tools in this category. Every tool runs entirely in your browser.
Case Converter
Convert text to UPPERCASE, lowercase, camelCase, snake_case, kebab-case, Pascal Case, and sentence case instantly in your browser.
Open Tool →Remove Duplicate / Empty Lines
Clean up text with one click: deduplicate lines and remove blank lines.
Open Tool →Text Diff
This diff checker compares two texts line by line or character by character with changes highlighted, entirely in your browser.
Open Tool →Text Merge Editor
Compare and edit two texts side by side with live diff highlights, then fix changes in place. 100% local.
Open Tool →Token Counter & Cost Estimator
Count LLM tokens locally: exact GPT tokenizer counts, honest ≈ estimates for Claude and Gemini, and per-model API cost estimates with dated prices. Nothing is uploaded.
Open Tool →Markdown Preview
Edit markdown with a live split preview — GitHub-flavored tables, task lists, footnotes, and Mermaid diagrams, with local file watching and dual themes. 100% local.
Open Tool →