Writing tools for technical-writers
Technical writing sits between code and prose. You are working in Markdown, copying example payloads out of an OpenAPI spec or Stoplight project, normalising case across a docs site that has drifted over years, and writing regex to clean up a CSV of broken links from an old export. The writing itself is the smaller half of the day.
Phrasit treats text the way the rest of your toolchain does. The JSON formatter pretty-prints and validates request and response examples before they go in a code block. The regex tester runs your pattern with live matches so you can build a substitution before you commit it. The case converter switches between camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE for variable references in body copy. The slug generator turns headings into stable URL fragments, and the text comparator gives a clean diff between two versions of a doc page. Everything runs in the browser, so you can paste internal docs without worrying about where they end up.
Core tools
The ones technical-writers reach for first- JSON formatter
Pretty-print, minify, and validate JSON with parse errors, type detection, and an expandable tree view.
- Regex tester
Test regular expressions with live match highlighting, capture groups, replacement preview, and sample patterns.
- Case converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, snake_case, kebab-case, camelCase, PascalCase, and more.
- Slug generator
Convert titles and pasted lists into URL-safe slugs with stop-word, separator, and max-length options.
- Find and replace
Bulk find and replace across long text with support for regex, case sensitivity, and whole-word matching.
- Text comparator
Compare two pieces of text side-by-side with line and character-level diff. Shows similarity percentage.
Helpful supporting tools
Useful adjacent to the core set- Sort lines
Sort, reverse, shuffle, or numerically reorder text lines with cleanup options for whitespace and blanks.
- Duplicate lines
Remove duplicate lines from pasted text with case, whitespace, and first-or-last occurrence options.
- Line counter
Count total, empty, and non-empty lines in any text. See longest, shortest, and average line length.
- URL encoder
Encode and decode URL components with percent encoding detection, error handling, and copy-ready output.
- Base64
Encode and decode Base64 with UTF-8 handling and optional URL-safe Base64 alphabet support.
- Text formatter
Clean messy text. Trim whitespace, collapse spaces, strip blank lines, convert smart quotes, normalise line endings.
Guides for technical-writers
Pick one and try it now
No signup, no paywall, runs entirely in your browser. The fastest way to see whether Phrasit fits your workflow is to open the tool and paste in a real piece of text.