All 358 Free Online Developer Tools
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11 categoriesAll Tools
AlphabeticalFraction Calculator - Add, Subtract, Multiply & Divide
Free fraction calculator. Add, subtract, multiply, divide fractions. Simplify, convert mixed numbers, compare fractions. Step-by-step solutions. No signup.
Free AI Chat - No Login, No Signup
Free AI chat powered by Llama 3.3 70B. No login, no signup, no tracking. Coding, writing, math, brainstorming. Conversations stay in your browser.
NewFree AI Detector - Check If Text Is AI Generated
Free AI content detector using multi-model voting (Groq, Gemini, NVIDIA). Detect ChatGPT, Claude, Gemini text with sentence highlighting. No signup.
NewFree AI Humanizer - Make AI Text Undetectable
Free AI humanizer with a 5-stage DeAI pipeline. Bypass GPTZero, Turnitin and Copyleaks. Real MAGE, Burstiness and brandonwise scores shown. No word limit.
NewFree AI Paraphrasing Tool - Rewrite Text Online
Free AI paraphrasing tool that rewrites text while preserving meaning. 8 modes including humanizer makes AI text sound natural. No signup, no limits.
Free AI PPT Maker - Generate Editable PowerPoint Slides
Free AI PPT maker with 4 professional styles. Generates real editable .pptx files in 10 seconds. No signup, no watermark, no daily limit, 10 languages.
NewFree AI Prompt Engineer - 8 Platforms 88 Templates Sandbox
Free AI prompt engineer. 88 ready-to-use prompts for ChatGPT, Claude, Midjourney, DALL-E, Stable Diffusion, Gemini, Llama, Copilot. Live test sandbox.
Free AI Resume Builder - Professional Resume Generator
Free AI-powered resume builder. Enter your details and get a professionally formatted resume instantly. No signup required.
Free AI Sentence Rewriter - 8 Modes Side-by-Side
Free AI sentence rewriter. 8 modes (standard, fluency, formal, simple, creative, expand, shorten, humanize) with side-by-step sentence comparison.
Free AI Translator - AI Multi-Language Translation
Free AI translator supporting 50+ languages. Translate text instantly with context-aware translations. No signup required.
Free ATS Resume Checker - Score & Scan Your Resume
Free AI ATS resume checker. Score your resume 0-100 against any job description, with missing skills, keywords and format issues flagged. Unlimited scans.
NewFree Audio Converter - Convert MP3, WAV, FLAC, OGG, AAC
Free online audio converter. Convert between MP3, WAV, FLAC, OGG, M4A, AAC, OPUS and AIFF. Adjust bitrate, sample rate and channels. 100% private.
NewFree BMI Calculator - Body Mass Index Checker
Free BMI calculator to check your body mass index. Metric and imperial units, instant results with health category. No signup required.
Free Book Search & ISBN Lookup - 30M+ Open Library
Search 30+ million books by title, author or ISBN-10/ISBN-13. Covers, publisher, year, page count and subjects from the live Open Library catalog.
NewFree Case Converter - Convert Text Case Online
Free online case converter. Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case, and more. Instant results.
Free Citation Generator - APA, MLA, Chicago
Free AI citation generator. Generate citations in APA, MLA, Chicago, Harvard, and IEEE formats. Just describe your source and get a formatted citation.
Free Color Palette Extractor - Extract Colors from Image
Free online color palette extractor. Extract dominant colors from any image as HEX, RGB, HSL values. Download CSS variables or JSON. No signup required.
Free Currency Converter - 166+ Currencies Exchange Rates
Free currency converter. Convert between 166+ world currencies instantly. Live exchange rates, swap currencies, search by country or currency code.
Free Email Signature Generator - Outlook Gmail HTML
Free email signature generator. 10 table-based templates, MSO compatible, base64 photo embedding, click-to-call phones, social icons. 100% private.
NewFree Grammar Checker - AI Error Explanation
Free AI grammar checker that not only corrects your English but explains why it's wrong. Perfect for learning proper grammar rules.
Free Image Resizer - Resize Images Online Free
Free online image resizer. Resize images to exact dimensions for social media, web, email. No upload - privacy-first client-side processing. Support JPG.
Free Image to Text (OCR) - Extract Text from Images Online
Free online OCR tool to extract text from images. Supports English, Chinese, Japanese, Korean and 10+ languages. 100% private, in-browser processing.
Free Invoice Generator - PDF Invoice Maker Online
Free online invoice generator. Create professional invoices with tax, discount, 30+ currencies and PDF download. 3 templates. No signup, 100% private.
NewFree Logo Maker - Design Custom Logos Online
Create a professional logo with 60+ icons, custom fonts, and colors. Download PNG and SVG. No signup, no watermark, 100% free.
NewFree Lottery Number Generator - Random Pick 3/4/5/6
Free lottery number generator. Pick 3, Pick 4, Pick 5, and Pick 6 games. Generate random winning numbers for Powerball, Mega Millions, and more. No signup.
Free Mind Map Maker - Brainstorm Ideas
Free online mind map maker. Brainstorm and organize ideas with radial, tree and free layouts. Export PNG, SVG, Markdown, OPML. No signup, 100% private.
Free Name Generator - Fantasy, Baby, Business, Username
Free name generator with 7 sub-generators: fantasy, baby, business, brand, username, character, fake. Deterministic algorithm, 1000+ word lists, no signup.
Free OG Image Generator - Social Card Creator 1200x630
Free OG image generator. 1200x630 Open Graph cards with multi-platform preview for Twitter, Facebook, LinkedIn and Slack. 6 templates. Download PNG.
NewFree Old Photo Restoration - Repair & Restore
Free old photo restoration. Repair scratches, dust, faded colors, low contrast and grain. 4 modes (auto, scratch, sharpen, color). 100% browser, no signup.
NewFree Online Calculator - Math Problem Solver
Free online calculator with scientific functions, unit conversion, loan calculator, and BMI calculator. No signup required, works in any browser.
PopularFree Online Math Solver - Step-by-Step Solutions
Free online math solver with step-by-step solutions. Solve algebra, equations, fractions, and more. No signup required, instant results.
Free Online Meme Generator - Create Memes with Templates
Free online meme generator. Upload images or use templates, add top and bottom text, customize fonts. Download as PNG. No signup, no watermark.
Free Online Notepad - Quick Notes in Browser
Free online notepad that saves your notes automatically. No signup, no login. Type and your notes are saved in your browser instantly.
Free Online Screen Recorder - No Download, No Watermark
Free online screen recorder - no download, no signup, no watermark. Record screen, webcam, and mic in browser. 100% private, stays on your device.
Free Online Timer & Stopwatch & Interval Trainer
Free online timer, stopwatch, and interval trainer. Pomodoro for work, Tabata/HIIT for fitness. No signup required. Privacy-first browser-based timing.
Free Online Video Editor - Trim & Cut Video in Browser
Free online video editor. Trim, crop, rotate, flip, add speed, filters and text to video in your browser. 100% private, no upload, export MP4.
Free Package Tracker - Track Any Carrier
Free universal package tracker. Enter any tracking number and automatically detect the carrier. Track USPS, UPS, FedEx, DHL, Amazon, and more. No signup.
Free Paycheck Calculator - Take-Home Pay After Taxes 2026
Free paycheck calculator for 2026. Calculate take-home pay from hourly wage or salary. Federal + state + FICA + Medicare + 401k deductions. All 50 states.
Free PDF Splitter - Split PDF Pages Online Free
Free online PDF splitter. Extract specific pages or split PDF into multiple files. No upload needed - privacy-first client-side processing.
Free Personality Test - 16 Personalities MBTI
Free 60-question personality test. Discover your 16 personalities MBTI type with detailed strengths, careers, and relationships. No signup, 100% private.
Free Poster Maker - Custom Online Poster Design Tool
Free poster maker. Design custom posters with 8 templates, drag-drop text and images, 9 sizes, PNG/PDF export. No signup, no watermark, 100% private.
Free Speed Test - Internet Speed Checker
Free internet speed test. Check your download speed, upload speed, and latency instantly in your browser. No software install needed.
PopularFree Stock Price Tracker - Real-Time Stock Quotes
Free stock price tracker. Get real-time stock quotes, price changes, highs, lows, and volume for any stock symbol. No signup required.
Free Sudoku - Daily Challenge & 4 Difficulty Levels
Free online Sudoku. 4 difficulty levels, daily challenge, hints with logic explanation, pencil notes and statistics. 100% private, no signup, no ads.
NewFree Tarot Card Reading Online - Celtic Cross, Yes/No, Daily
Free tarot card reading online. 78 authentic Rider-Waite cards, 7 spreads (Daily, Yes/No, Past-Present-Future, Celtic Cross, Birth Card, Love, Career).
Free Text Diff Checker - Compare Text & Code Online
Free online text diff checker to compare text and code. Side-by-side view with syntax highlighting. Compare JSON, XML, code files and find differences.
Free Tile Calculator - Floor, Wall & Pattern Estimator
Free tile calculator with multi-room aggregation, 5 patterns, box optimization, grout and thinset estimator, waste factor. 100% private.
Free Time Zone Converter - World Clock
Free time zone converter. Convert time between cities instantly. See current time in multiple locations. No signup required.
Free Tip Calculator - Quick & Easy Restaurant Tip Tool
Free tip calculator for restaurants. Calculate tip amount, split bills, and see per-person cost. Works offline, no signup required. Instant results.
Free Typing Test - WPM, Accuracy & Code Mode
Free online typing test with WPM, accuracy and code snippet modes (JavaScript, Python, SQL, HTML). Practice words, quotes, numbers and syntax. No signup.
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