What's New
The latest free developer tools added to DevTools Hub. We ship 2-3 new tools every week. Updated 2026-11-10.
Recently Added Tools
Showing the 20 newest tools added to the catalog.
CSS Specificity Calculator - Compute Selector Weight
Code FormattersFree CSS specificity calculator. Compute a,b,c values for any selector instantly. Understand selector weight and cascade priority. No signup.
NewAI Code Reviewer - Free Online Code Review
AI LanguageFree AI code reviewer. Paste code, get instant review for bugs, performance, security, and best practices. No login, private.
NewPDF to Text Extractor - Free Online PDF Text Reader
PDF ToolsFree PDF to text extractor. Extract plain text from any PDF in your browser. No upload, no signup, 100% private. Copy or download results.
NewMarkdown to PDF Converter - Free Online MD to PDF
ConvertersFree online MD to PDF converter. Convert markdown to PDF instantly in browser. Preserve formatting, headings, code blocks, tables. No signup, 100% private.
NewKeyword Suggestions Generator - Free SEO Keyword Research
GeneratorsFree keyword suggestions from Google and Bing autosuggest. Expand one seed into 20 live search ideas, compare both engines, and copy the list. No signup.
NewMinecraft Circle Generator - Free Blueprint Tool
GeneratorsFree Minecraft circle generator. Draw pixel-perfect circles, ovals and domes with block counts on a live grid. PNG download, printable, no signup.
NewSolar Sizing Calculator
CalculatorsFree solar sizing calculator. Estimate solar panel array size and battery storage from monthly kWh use and peak sun hours. Private browser math, no signup.
NewAI Video Script Generator - Shorts & Social Videos
AI LanguageFree AI video script generator. Write YouTube Shorts, TikTok and Reels scripts with proven hooks, retention beats and CTA. No signup.
NewAI Writing Coach - Essay & Content Feedback
AI LanguageFree AI writing coach for essays and content. Get rubric-based feedback on thesis, structure, evidence, clarity and voice. Keeps your voice, no signup.
NewBlood Pressure Calculator - Average & Stage
CalculatorsFree blood pressure calculator. Average a batch of readings, see your ACC/AHA stage, MAP and pulse pressure, plus a private log with 7 and 30 day averages.
NewYouTube Video Summarizer - AI Video Summary Tool
Media ToolsFree AI YouTube video summarizer. Paste a YouTube video URL and get an AI-generated summary with key points. Private, no signup, no key.
NewPowerPoint to PDF Converter - Free PPTX to PDF Online
PDF ToolsConvert PPTX slides to PDF right in your browser. Text stays selectable and searchable. Batch conversion, optional speaker notes, no upload and no signup.
NewFree AI Content Writer - Generate SEO Blog Posts
AI LanguageFree AI content writer that generates complete SEO blog posts: outline, title, meta description, body draft and FAQ. No signup, private.
NewAir Quality Index Checker - Live AQI Today
Daily LifeFree air quality index checker. Live AQI for any city or your location, a pollutant breakdown, and the cleanest hour to go outside. No signup.
NewSnow Day Calculator - School Closure Chance
Daily LifeFree snow day calculator. Turns live hourly weather data into a school closure probability for your ZIP, postal code or city. No signup.
NewPTO Calculator - Accrual & Balance
CalculatorsFree PTO calculator. Project your paid time off balance on any date from your pay schedule, accrual cap and carry-over limit, and estimate a payout.
NewRent vs Buy Calculator - Find Your Break-even Year
Money & MarketsFree rent vs buy calculator. Break-even year, year-by-year net worth comparison, PMI, and selling costs, with a sensitivity table. No signup.
NewBaby Percentile Calculator
CalculatorsBaby Percentile Calculator on WHO growth curves. Weight, length and head circumference percentiles with z-scores, charts and corrected age for preemies.
NewPrayer Times Calculator - Salah Countdown & Qibla
Daily LifeSalah times for your exact coordinates with a next-prayer countdown, six calculation methods, Hanafi Asr option, and Qibla bearing. 100% in your browser.
NewSeating Chart Maker - Free Printable Seating Plan
GeneratorsFree seating chart maker for classrooms and weddings. Assign seats with keep-apart and keep-together rules, drag to adjust, then print or save PNG.
NewFrequently Asked Questions
How often does DevTools Hub add new tools?
New tools ship 2-3 times per week. Every Friday we publish a wrap-up of recent additions and major bug fixes on this page.
How can I be notified when a new tool is released?
Bookmark this page (/whats-new/) and check back weekly, or follow the machine-readable catalog at /llms-full.txt for AI agents and RSS readers.
Can I request a specific tool?
Yes. Use the Feedback link on any tool page to suggest a new tool. We prioritize tools with the highest Bing/Google search demand and the most votes.
Do new tools keep the same privacy guarantees?
Yes. Every new tool is 100% free, runs in your browser by default, requires no signup, and does not upload your data unless the AI features require a server roundtrip (which is documented on each tool page).