Developer tools that work.
166 free utilities for code formatting, file conversion, calculations, AI assistance, and more. No signup, no upload, no tracking.
Popular Tools
8 most-usedFree 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 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.
Free Email Signature Generator - Outlook Gmail HTML
Pro email signature generator. 10 table-based templates, MSO compatible, base64 photo embedding, click-to-call phones, social icons. Outlook + Gmail + Apple Mail ready. No signup, no tracking, 100% private browser tool. AI cannot produce email-client-compatible HTML.
NewImage Compressor - Reduce Image File Size Online Free
Free online image compressor. Reduce image file size without losing quality. Supports JPG, PNG, WebP. No upload, privacy-first processing.
Image Cropper - Crop Photos Free Online with Aspect Ratio Presets
Free online image cropper. Crop photos with aspect ratio presets, rotate, flip, zoom. Social media sizes for Instagram, Facebook, Twitter. No upload, 100% private browser processing. AI cannot crop your photos - we do.
NewJSON Formatter - Format & Validate JSON
Free JSON formatter. Format, minify, beautify JSON and convert to YAML with syntax error detection.
JSON to CSV Converter - Bidirectional Online Data Converter
Free JSON to CSV converter and CSV to JSON online. Flatten nested objects, auto-detect input, table preview, export file. 100% private browser processing. AI cannot convert data reliably - we do.
NewLive Sports Scores Tracker - NFL NBA MLB NHL Soccer
Free live sports scores tracker. Follow NFL, NBA, MLB, NHL and soccer in real-time. Updated every 30 seconds. No signup, no ads. AI cannot show live game scores - we do.
NewRecently Updated
1 toolAudio Cutter & Trimmer
Free online audio cutter and trimmer. Cut and trim MP3, WAV, M4A, FLAC, OGG with waveform precision. No upload, 100% private.
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11 categoriesView all 166 tools (alphabetical)
Image Vectorizer - Free PNG JPG to SVG Converter Online
Free image vectorizer. Convert PNG, JPG, WebP, BMP, GIF to scalable SVG vectors in your browser. 9 presets, color count, blur, threshold, path tolerance controls. 100% private, no upload, no signup. AI cannot vectorize - we do.
NewIP Address Lookup - Find Your IP Address
Free IP address lookup tool. Find your public IP, location, ISP, and geolocation data instantly. No signup required.
Is It Down? - Website Down Checker
Free website down checker. Check if any site is down for everyone or just you. Real-time HTTP status, response time. No signup. AI cannot check real-time website status - we do.
NewJSON Formatter - Format & Validate JSON
Free JSON formatter. Format, minify, beautify JSON and convert to YAML with syntax error detection.
PopularJSON to CSV Converter - Bidirectional Online Data Converter
Free JSON to CSV converter and CSV to JSON online. Flatten nested objects, auto-detect input, table preview, export file. 100% private browser processing. AI cannot convert data reliably - we do.
NewJSON to YAML Converter - Free Bidirectional Tool
Free JSON to YAML converter and YAML to JSON. Bidirectional with indentation control, key sorting, syntax validation. 100% private, no upload, no signup.
NewJWT Decoder - Decode & Verify Tokens
Free JWT decoder. Decode tokens, inspect claims, verify signatures in your browser.
Live Sports Scores Tracker - NFL NBA MLB NHL Soccer
Free live sports scores tracker. Follow NFL, NBA, MLB, NHL and soccer in real-time. Updated every 30 seconds. No signup, no ads. AI cannot show live game scores - we do.
NewLoan Calculator - Mortgage & Extra Payment Optimizer
Free loan calculator that shows more than just your payment. See how extra payments save thousands, when PMI drops, and when you own your home free.
Lorem Ipsum Generator - Free Placeholder Text
Free Lorem Ipsum generator for designers and developers. Generate placeholder text by paragraphs, sentences, or words. Start with classic Lorem ipsum or randomized. No signup, browser-based.
NewMeta Tag Generator - Free SEO Tool
Free SEO meta tag generator. Create title tags, meta descriptions, OG, and Twitter Cards with live SERP preview. Character counting, copy HTML. No signup.
NewMorse Code Translator - Encode/Decode Morse Code
Free Morse code translator. Encode text to Morse code and decode Morse back to text. Instant conversion, audio playback, and copy functionality.
Mortgage Calculator with PMI, Tax & Insurance
Free mortgage calculator with PMI, property tax, insurance, HOA. Shows true monthly payment, total cost, amortization schedule, and affordability.
NewNumber to Words Converter - Spell Out Numbers in English
Free number to words converter. Convert any number to English words for checks, invoices, legal docs. Supports decimals, currency, lakh/crore. 100% accurate. No signup.
NewOn This Day in History - Historical Events & Famous Births
Discover what happened on this day in history. Free database of major historical events, famous births, notable deaths, and holidays. Updated daily. No signup.
NewOnline Chart Maker - Bar, Line, Pie & Radar
Free online chart maker and graph generator. Create bar, line, pie, doughnut, and radar charts with customizable colors and data. Export PNG. No signup, 100% private browser processing. AI cannot draw accurate charts - we do.
NewOnline Metronome - Free BPM Beat & Practice Tool
Free online metronome with tap tempo, time signatures, subdivisions, and visual beat indicator. Practice with precision timing for any instrument. 100% browser-based, no signup.
NewPassport Photo Maker - Free Online 2x2, 35x45mm, 35x35mm
Free online passport photo maker. Create compliant US 2x2, Schengen/UK 35x45mm, India 35x35mm, China 33x48mm photos. Auto white background, print sheet (4x6/A4), 100% private browser processing.
NewPassword Generator - Create Strong Passwords
Generate strong, secure passwords with real-time strength analysis. Learn what makes a password secure.
PopularPassword Strength Checker - Analyze & Test Password Security
Free online password strength checker with entropy, crack time estimation for 3 scenarios, character analysis, and breach check via HIBP k-anonymity. 100% private browser. No signup.
NewPDF Compressor - Free Online File Size Reducer
Free PDF compressor with 4 levels (light, medium, strong, aggressive). 100% private browser processing, no upload, no signup, no daily limit, no watermark. AI cannot process binary PDFs.
NewPDF Editor - Edit, Rotate, Delete, Annotate PDF Pages
Free online PDF editor. Rotate, delete, reorder pages, add text annotations, crop, and extract pages. No upload required - works entirely in your browser.
PDF Merger - Combine Multiple PDFs into One
Free online PDF merger. Combine multiple PDF files into one with drag-drop reordering, visual preview, and compression. No upload limit. Works in browser.
PDF to Image Converter - Free Online JPG PNG WebP
Free PDF to image converter. Convert PDF pages to JPG, PNG, or WebP. Choose DPI (72-300), quality, page range. Preview thumbnails, 100% private browser processing, no upload, no signup, no watermark.
NewPDF to Word Converter - Free DOCX Online
Free PDF to Word converter. Extract text from PDF to editable DOCX, RTF, or TXT. 100% private browser processing, no upload, no signup, no daily limit, no watermark. AI cannot generate valid .docx files.
NewPercentage Calculator - Find %, Increase, Decrease & Difference
Free percentage calculator online. Calculate X% of Y, increase/decrease, reverse percentage, and add/subtract percent. Instant results, no signup.
Photo Collage Maker - Free Online Image Combiner
Free online photo collage maker. Combine multiple images into beautiful collages with 8 layout templates, custom spacing, background color. No signup, no upload, 100% private browser processing. AI cannot create visual collages - we do.
NewProxy Checker - Free IP Proxy Detection Tool
Free online proxy checker. Detect if an IP address is a proxy, VPN, or Tor exit node. Check IP geolocation, WHOIS, and open proxy ports.
QR Code Generator - Create QR Codes Free
Free QR Code Generator. Create QR codes for URLs, text, WiFi, email, SMS, vCards. Download as PNG.
PopularQR Code Reader - Decode QR Codes from Image & Camera
Free online QR Code Reader. Decode QR codes from images, screenshots, or live camera. Extract URLs, WiFi passwords, vCards instantly. 100% private browser processing. No signup. AI cannot scan real QR codes - we do.
NewRandom Generator - Number, Dice, Coin, Wheel & Decision Maker
Free online random generator: pick random numbers, roll dice, flip coins, spin a wheel, or make decisions. True randomness via crypto API. No signup, no ads.
Readability Score Calculator Online
Free readability calculator. 6 formulas: Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI. Grade level + sentence highlighting.
NewRegex Tester - Test Regular Expressions
Test regular expressions with real-time matching. Supports g, i, m, s flags. See match count and captured groups.
Report a Problem
Free feedback form for DevTools Hub. Suggest new tools, report bugs, request features. Admin replies via KV storage. No signup.
NewRoman Numeral Converter - Free Online Number Tool
Free Roman numeral converter. Convert numbers to Roman numerals and back, including dates. Supports 1-3,999,999 with overline notation. 100% accurate, no signup.
NewSnake Game - Classic Snake Online Free
Play the classic Snake game online free. Control your snake, eat food, grow longer. Multiple speeds, grid sizes, wall wrap mode. No ads, no signup.
Solitaire - Free Classic Klondike Card Game Online
Play free Klondike Solitaire online. Classic card game with undo, hint, draw 1 or 3. No signup, no ads, 100% free in your browser.
Song Lyrics Finder - Free Lyrics Search No Signup
Free online song lyrics finder. Search by artist and title. No signup, no ads, no tracking. 100% private. AI cannot retrieve copyrighted lyrics - we do.
NewSpace Keeper - Keep HuggingFace Spaces Awake
Free tool to keep your HuggingFace Spaces awake and prevent idle timeout. Supports multiple access methods, uptime monitor, custom intervals (1-48 hours).
SQL Formatter - Format & Beautify SQL
Free SQL formatter. Format and beautify SQL queries with proper indentation. Supports MySQL, PostgreSQL, SQLite.
SSL Certificate Checker - Test Website Security
Free SSL checker. Scan any website for TLS security and certificate validity. Get grade A+ to F. No signup. AI cannot test real SSL certificates.
Stopwatch - Free Online Stopwatch with Lap Times
Free online stopwatch with millisecond precision, lap/split timing, lap statistics, CSV export, and fullscreen mode. No signup, no ads. Works offline.
NewSubnet Calculator - IPv4 IPv6 CIDR VLSM Supernetting
Free subnet calculator for IPv4 and IPv6. Bit-exact CIDR, VLSM, supernetting, overlap detection. No signup. AI cannot reliably compute subnets - we do.
NewSubtitle Editor - Free Online SRT & VTT Editor
Free online subtitle editor. Edit, fix, and convert SRT and VTT subtitle files in your browser. Batch shift timing, validate overlaps, split long cues, merge adjacent. No upload, no signup, 100% private. AI cannot handle millisecond-precise timestamp math - we do.
NewSunrise Sunset Calculator - Find Sunrise & Sunset Times
Free online sunrise and sunset calculator. Enter any city to get today's sunrise and sunset times. No signup required.
Text to Handwriting - Free Online Handwritten Text Generator
Free text to handwriting converter. Turn typed text into realistic handwritten notes on lined, grid, or plain paper. 18 fonts, 7 ink colors, PNG/JPG/PDF export. No signup, no watermark.
NewText to Speech - Free Online Voice Generator
Free online text to speech with 8 AI voices. Convert text to natural-sounding audio in English and Chinese. No signup required. Browser TTS and AI-powered.
Timestamp Converter - Unix Time Conversion
Convert Unix timestamps to dates and dates to timestamps. Shows current timestamp updating in real-time.
URL Encoder/Decoder - Encode URLs Safely
Free URL encoder. Encode special characters in URLs for safe transmission.
UUID Generator - UUID v1 v4 v7 Generator
Generate UUID v1, v4, and v7 identifiers. Single or bulk generation up to 100 UUIDs at once.