Dev & utility tools, ready.
Finish everyday tasks without leaving your browser.
Paste text or data, flip a toggle, and copy the answer. Counters, converters, previews, and validators run client-side—no accounts, no tracking.
Built for people who move fast
Writers & PMs: get clean word counts, reading time, and quick rewrites without docs bloat.
Marketers: preview meta snippets, build UTMs, and sanity-check keyword density before shipping.
Engineers: format JSON, convert CSV, escape entities, and test regex locally.
Designers: generate gradients, shadows, clip-paths, and contrast checks that copy straight into code.
High-demand tools by category
Four buckets, 40 evergreen utilities. Pick a category to get copy-paste answers for writing, SEO, data, and frontend work.
Text & Writing Utilities (10)
- Word / Character / Sentence / Paragraph Counter
- Reading Time Calculator
- Speaking Time Calculator (words → minutes)
- Case Converter (UPPER/lower/Title/Sentence)
- Text Cleaner (trim spaces, remove blank lines)
- Find & Replace (multi-line, regex optional)
- Sort Lines (A–Z / Z–A / by length)
- Remove Duplicates from List (unique lines)
- Text Diff Checker (compare two texts)
- Lorem Ipsum Generator
SEO & Web Copy Tools (10)
- Slugify (Unicode-safe URL slug generator)
- Meta Title Pixel Width Checker (Google snippet)
- Meta Description Length Checker
- SERP Preview (Title + URL + Description mock)
- Keyword Density Checker
- H1–H6 Extractor (paste HTML → headings list)
- UTM Builder (campaign URL generator)
- robots.txt Generator
- sitemap.xml Generator (basic/static)
- Open Graph / Twitter Card Preview (paste URL/meta)
Developer & Data Tools (10)
- JSON Formatter + Validator
- JSON → CSV Converter
- CSV → JSON Converter
- XML Formatter + Validator
- YAML ↔ JSON Converter
- Base64 Encode/Decode (text)
- URL Encode/Decode
- HTML Entities Encode/Decode
- Markdown ↔ HTML Converter
- Regex Tester + Saved Common Patterns
Design / Frontend Helpers (10)
- CSS Box Shadow Generator
- CSS Gradient Generator
- Border Radius / Blob Generator
- CSS Clip-Path Generator
- Flexbox Playground
- CSS Grid Generator
- PX ↔ REM ↔ EM Converter
- Aspect Ratio Calculator (and resize helper)
- SVG Optimizer (SVGO-style, client-side)
- WCAG Contrast Checker (AA/AAA)
What’s next
Want these ranked by speed-to-ship and traffic potential, with URLs and pSEO ideas? Tell us your domain and we’ll map the launch plan.
Disclaimer: This calculator is for educational purposes only and does not provide financial advice.