Free Online Tools Directory
One place for every free tool across the Brightcoding network — automotive, finance, image, SEO, text, QR, security and developer utilities. No signup, no cost.
Interactive Car Diagnostic
Guided questions to narrow down likely car fault causes.
Air Conditioning Diagnostic
Step-by-step guide for an AC that is not cooling.
OBD-II Code Lookup
Search trouble codes with causes and fixes.
OBD-II Live Scanner
Live engine data over a Bluetooth OBD adapter.
Photo Diagnostic Assistant
Photograph a part and follow an inspection checklist.
Sound Diagnostic Assistant
Record an engine noise and match likely causes.
Live OBD PID Data
Real-time engine data with live charts and analysis.
OBD Protocol Compatibility
Find which OBD protocol your vehicle uses.
Battery Calculator
Estimate battery health from voltage and runtime.
Charging System Check
Analyze alternator voltage off, idle and loaded.
Oil Change Calculator
Oil quantity, interval, filter and service checklist.
Torque Specs Lookup
Verified tightening torque values for common components.
Spark Plug Calculator
Replacement interval, cost and misfire assistant.
Cooling System & Coolant
Overheating diagnostic and coolant mix calculator.
Engine Compression Calculator
Compression ratio from bore, stroke and volume.
Engine Builder Calculator
Displacement, piston speed and power estimates.
Power & Torque Converter
Convert kW/hp and Nm/lb-ft, derive torque.
Oil Change Specs
Exact oil quantity, viscosity and filter for your car.
Tire Calculator
Decode tire sizes and compare two sets.
Wheel Diameter Calculator
Diameter, circumference and distance per revolution.
Brake Calculator
Disc thickness, pad wear and replacement cost.
Fuel Consumption Calculator
L/100 km, MPG and trip cost with tolls.
Gearbox & RPM Calculator
RPM to speed, gear ratios and final drive impact.
Garage Quote & Invoice Generator
Build estimates and invoices, export as PDF.
Repair Cost Calculator
Real cost, margin and client price for repairs.
Parts Margin Calculator
Set retail and professional customer margins.
Labor Cost Calculator
Time by hourly rate plus parts and extras.
Customer Manager
Client cards, vehicles and service history on-device.
Digital Service Book
VIN, mileage and full maintenance history per vehicle.
Service Reminders
Notifications when service comes due.
Vehicle Dashboard
Live status board computed from the service book.
Garage Dashboard
Revenue, quotes and most profitable work overview.
Parts Inventory
Track stock with low-stock alerts and value.
Voice Assistant
Spoken commands become actions on the workshop floor.
Photo to Quote
Photo, confirm works, parts and labor, quote PDF.
Diagnostic Report Generator
Printable diagnostic report from code or symptom.
Maintenance Checklist
Interactive 10,000 km service checklist.
Mechanic Quiz
Test automotive knowledge with explanations.
Which Tool Do I Need?
Get exact tools, steps and safety warnings.
Mechanic Training
Six levels of interactive lessons and quizzes.
AI Mechanic Assistant
13 free AI tools: chat, OBD, photo, voice and more.
Car Programming & Tuning
ECU tuning, coding, keys and gains calculator.
Currency Converter
Live converter for 60+ currencies with mid-market rates.
USD to EUR
Convert US Dollar to Euro.
USD to GBP
Convert US Dollar to British Pound.
USD to JPY
Convert US Dollar to Japanese Yen.
EUR to USD
Convert Euro to US Dollar.
GBP to USD
Convert British Pound to US Dollar.
USD to CAD
Convert US Dollar to Canadian Dollar.
USD to AUD
Convert US Dollar to Australian Dollar.
USD to INR
Convert US Dollar to Indian Rupee.
CV / Resume Builder
Build a professional CV in the browser with live preview and PDF.
Software Engineer Resume
Resume template for engineering roles.
Nursing Resume
Resume for clinical experience and certifications.
Marketing Resume
Resume for campaigns, analytics and growth.
Teacher Resume
Resume for education and classroom experience.
Accountant Resume
Resume for financial experience and certifications.
Executive Resume
Resume for leadership and board experience.
Student Resume
No-experience layout for education and projects.
Project Manager Resume
Resume for certifications and delivery metrics.
Data Analyst Resume
Resume for SQL, Python and dashboards.
Customer Service Resume
Resume for communication and CRM skills.
JSON Formatter & Validator
Format, validate and minify JSON with error reporting.
JSON to CSV Converter
Convert JSON arrays of objects into CSV rows.
Base64 Encode / Decode
Encode text to Base64 and decode it back.
SHA-256 Hash Generator
Hash any text to a SHA-256 digest in-browser.
Salary After Tax Calculator
Convert gross salary into net pay after taxes.
Hourly Salary Calculator
Convert yearly salary into hourly and monthly figures.
Annual Salary Calculator
Convert an hourly rate into annual pay.
Employer Cost Calculator
Real cost of an employee including social charges.
Freelance Hourly Rate Calculator
Build an hourly rate from target income and costs.
Freelance Rate Calculator
Layer overheads and margin onto a base hourly rate.
Profitability Calculator
Profit, margin and markup from revenue and expenses.
ROI Calculator
Return on investment and annualized ROI.
ROAS Calculator
Return on ad spend and break-even ROAS.
Gross Margin Calculator
Gross profit, margin and markup from revenue and COGS.
Net Margin Calculator
Net profit and net margin after all expenses.
Sale Price Calculator
Selling price that guarantees a desired margin.
Break-even Calculator
Sales volume and revenue where the business breaks even.
Cash Flow Calculator
Monthly surplus and savings rate.
Loan Amortization Calculator
Monthly payment, total repaid and total interest.
Car Loan Calculator
Monthly payment and total financing cost.
Debt-to-Income Ratio Calculator
Healthy borrowing from monthly debts and income.
Borrowing Capacity Calculator
How much can you borrow from income and debts.
Down Payment Calculator
Home purchase cash needed and loan required.
Rental Yield Calculator
Gross and net property return from price and rent.
Image Converter
All-in-one JPG/PNG/WebP/AVIF converter.
PDF to Images
Extract PDF pages as JPG/PNG.
Images to PDF
Merge JPG/PNG/WebP into a single PDF.
JPG to PNG
Convert with transparency support.
PNG to JPG
Flatten transparency and shrink file size.
WebP to JPG
WebP to universal JPG.
WebP to PNG
Lossless WebP to PNG.
HEIC to JPG
Convert iPhone and Android HEIC photos.
SVG to PNG
Rasterize vectors at any size.
Image Compressor
Reduce JPG/PNG/WebP size up to 80%.
Image Resizer
Resize by pixels or percentage.
Image Cropper
Crop with presets or freeform.
Favicon Generator
Export ICO plus all PNG sizes.
Icon Generator
App and UI icons from 48 to 512px.
OG Image Generator
1200x630 social share images.
Image Dimension Analyzer
Size, DPI, ratio and megapixels.
Image Color Extractor
Dominant colors and HEX from a photo.
QR Code Generator
QR for URL, text, Wi-Fi and email.
Color Palette from Image
Palette extracted from an image.
Color Picker
Visual picker for HEX/RGB/HSL/CMYK.
Hex to RGB
Convert hex codes to RGB.
RGB to Hex
Convert RGB to hex.
Hex to HSL
Hex to HSL notation.
HSL to RGB
HSL to RGB values.
CMYK to RGB
Print to screen colors.
RGB to CMYK
Screen to print colors.
Contrast Checker
Text readability against WCAG.
WCAG Contrast Checker
AA/AAA compliance check.
CSS Gradient Generator
Linear and radial gradients.
CSS Box Shadow Generator
Shadow code builder.
CSS Border Radius Generator
Per-corner rounding.
CSS Animation Generator
Keyframes and effects.
CSS Button Generator
Styled buttons.
CSS Glassmorphism Generator
Frosted-glass effect.
CSS Neumorphism Generator
Soft-UI dual shadows.
Color Palette Generator
Five-color harmonious schemes.
Complementary Palette Generator
High-contrast schemes.
Monochromatic Palette Generator
Single-hue schemes.
Invoice Generator
Multilingual PDF invoices with themes and sharing.
Time Tracker
Stopwatch, tasks, hourly rates and reports.
Legal Generator
Terms, privacy policy and legal notices.
Quote Generator
Professional estimate with line items and PDF.
Timesheet Generator
Weekly and monthly timesheet grid with PDF.
Mileage Calculator
French mileage allowance for tax declarations.
VAT Calculator
HT/TTC/TVA calculations.
Ticket Generator
Printable event tickets and receipts.
Payment Receipt
Receipt of payment document.
Credit Note
Credit or avoir note.
Order & Delivery Note
Order and delivery note.
Coupon Generator
Printable discount coupon.
Shipping Label
Printable shipping label.
Price Labels
Printable price tags and labels.
Payment Reminder
Reminder letter for overdue payments.
Salary Calculator
Net to gross salary conversion.
Micro-entrepreneur Contributions
URSSAF contributions estimator.
Loyalty Card
Printable customer loyalty card.
Gift Voucher
Printable gift voucher.
Attestation Generator
Attestation and certificate document.
Break-even Calculator
Break-even and profitability threshold.
Loan Calculator
Loan repayment and interest calculator.
Paint Calculator
Liters of paint needed for a room.
Room Area Calculator
Floor area and perimeter in square meters.
Room Volume Calculator
Cubic meters of a room.
Tile Calculator
Tiles needed including waste.
Flooring Calculator
Packs of parquet, laminate or vinyl.
Concrete Calculator
Cubic meters and bags of concrete.
Cement Calculator
Bags of cement for a mix.
Sand Calculator
Cubic meters and tons of sand.
Gravel Calculator
Cubic meters and tons of aggregate.
Roof Area Calculator
Pitched roof surface in square meters.
Slope Calculator
Percent, degrees and ratio.
Staircase Calculator
Steps, riser and stringer.
Solar Panel Calculator
Number of panels needed.
Solar Power Calculator
Daily and yearly solar output.
Solar Battery Calculator
Battery capacity in kWh and Ah.
Heating Cost Calculator
kWh and cost per season.
Fuel Consumption Calculator
Liters per 100 km.
Fuel Cost Calculator
Trip cost and fuel needed.
EV Cost Calculator
EV charging cost per trip.
EV Range Calculator
Autonomy from battery.
EV Charging Calculator
Charging time and cost.
Cost per km Calculator
Fuel and EV cost per kilometer.
Distance Calculator
Distance from speed and time.
Travel Time Calculator
Journey time from distance and speed.
Average Speed Calculator
km/h from distance and time.
Toll Calculator
Highway toll estimate.
Road Trip Cost Calculator
Full trip budget.
km/h to mph Converter
Convert kilometers per hour to miles.
mph to km/h Converter
Convert miles to kilometers per hour.
L/100km to MPG Converter
Convert fuel economy to miles per gallon.
Tire Pressure Calculator
Recommended psi and bar.
Car Value Calculator
Depreciation estimate.
Vehicle Sheet Generator
Vehicle summary and fiscal power.
Weeks Between Dates
Days and weeks count between dates.
Months Between Two Dates
Months and days count.
Days Until a Date
Countdown to any date.
Countdown Timer
Days, hours, minutes and seconds.
End Time Calculator
Start time plus duration.
Hours Adder
Add up to three durations.
Hours to Minutes Converter
Convert hours to minutes.
Minutes to Seconds Converter
Convert minutes to seconds.
Work Time Calculator
Net hours from start and end.
Overtime Calculator
Worked versus standard hours.
Work Break Calculator
Recommended break length.
Schedule Generator
Time slot plan.
Timetable Generator
Lessons with breaks.
Monthly Calendar
Generate and print any month.
Annual Calendar
Full year at a glance.
School Calendar
Term dates from start and weeks.
Time Zone Difference
Offset between two zones.
Time Zone Converter
Date and time between zones.
World Clock
Live times in major cities.
Jet Lag Calculator
Plan recovery after a flight.
Transliteration & Romanization
Convert between Arabic, Cyrillic, Greek and Latin scripts.
Script Detector & Analyzer
Identify script and language of any text.
Unicode Inspector
UTF-8 byte breakdown, escapes and normalization.
Character Search
Find any character by name, codepoint or glyph.
Diacritics Palette
Browse combining marks and modifiers.
Virtual Keyboard Catalogue
Interactive virtual keyboards by script.
Script Catalogue
Explore every writing system and its alphabet.
Languages Directory
Languages linked to scripts and keyboards.
Learn a Writing System
Alphabet explorers and typing practice.
Password Strength Checker
Score a password, estimate crack time and entropy.
Password Generator
Strong random passwords up to 128 characters.
Random String Generator
Random tokens, IDs and keys.
SHA-256 Generator
Hash text to a 64-char SHA-256 digest.
MD5 Generator
Compute the MD5 checksum of any text.
SHA-1 Generator
Generate the SHA-1 hash of any input.
HMAC Generator
Keyed HMAC with multiple algorithms.
bcrypt Generator / Checker
Hash passwords with bcrypt and verify hashes.
IP Address Checker
Identify IPv4 vs IPv6 and address type.
IPv4 Calculator
Network, broadcast and usable hosts from CIDR.
IPv6 Calculator
Expand, compress and subnet IPv6.
Subnet Calculator
CIDR ranges and usable host counts.
MAC Address Generator
Random valid MAC addresses in multiple formats.
Port Checker
What each TCP/UDP port number means.
DNS Lookup
Resolve A, AAAA, MX, NS and TXT records.
WHOIS Lookup
Domain registration and expiry information.
HTTP Header Analyzer
Security, caching and SEO headers explained.
User-Agent Parser
Decode browser, OS and device from a UA string.
MIME Type Lookup
File extension to MIME type reference.
HTTP Status Code Lookup
Every status code 1xx to 5xx explained.
QR Code Generator
Create QR codes for URLs with custom colors.
Wi-Fi QR Code Generator
QR that shares a Wi-Fi network and password.
Email QR Code
QR that opens a pre-filled email.
Text QR Code
Encode any text into a scannable QR.
Robots.txt Generator
Standards-compliant robots.txt with crawler rules.
XML Sitemap Generator
Build a valid XML urlset sitemap.
.htaccess Generator
Apache .htaccess with redirects and caching.
Schema.org Generator
JSON-LD structured data for common types.
FAQ Schema Generator
FAQPage JSON-LD for rich results.
Article Schema Generator
Article, NewsArticle and BlogPosting JSON-LD.
Product Schema Generator
Product JSON-LD with price and availability.
LocalBusiness Schema Generator
Local business JSON-LD with address and hours.
Open Graph Generator
og: and twitter: meta tags for social sharing.
Twitter Card Generator
Twitter Card meta tags.
Meta Tags Generator
Title, description, canonical and robots meta.
Canonical URL Generator
Normalized URL and canonical link tag.
SEO URL Checker
Analyze on-page SEO factors with pass/fail.
HTTP Status Checker
Response codes, timing and redirect chain.
Redirect Checker
Trace redirect chains hop by hop.
Broken Link Checker
Extract and test all links on a page.
DNS Checker
Query DNS records with TTL and auth status.
SSL Checker
Certificate issuer, validity and SAN domains.
HTTP Header Checker
Inspect response headers and security flags.
Typing Test
Measure WPM and accuracy in timed tests.
WPM Test
Typing speed test with instant WPM score.
Words Per Minute Test
Speed check with live progress.
Fancy Text Generator
50+ Unicode font styles to copy and paste.
Aesthetic & Vaporwave Text
Fullwidth and Y2K fonts.
Lorem Ipsum Generator
Classic and fun filler text.
Zalgo / Glitch Text
Glitchy text with adjustable intensity.
Strikethrough & Underline
Old price text effect.
Cool Username Generator
Gamertags in Unicode fonts.
Fake Tweet Generator
Realistic meme conversations.
Japanese & Korean Style Text
Katakana and K-pop aesthetic text.
Glitch Text & GIF
Animated glitch GIF maker.
Code / Hacker Style Text
Monospace and terminal aesthetics.
Case Converter
Eight case modes including alternating.
Morse, Binary & ASCII Art
Text to Morse with audio and ASCII art.
Reverse & Mirror Text
Backwards, mirror and upside-down text.
Text to QR Code
QR with colors and logo.
Email Signature Generator
HTML signature builder.
Emoji Translator
Words to emoji sequences.
Memorable Password Generator
XKCD-style passphrases.
Word Counter & SEO
Words, chars, reading time and keyword density.
Case Cleanup Tool
Fix broken capitalization from PDFs.
Syllable Counter & Haiku
Count syllables and auto haiku.
Plagiarism & Duplicate Detector
Find duplicate sentences and cliches.
Keyboard Shortcuts Library
Searchable library of 1000+ shortcuts.
Mac vs Windows Shortcuts
Cross-platform equivalents.
Custom Shortcut Map
Personalized printable cheat sheet.
Virtual Keyboard Simulator
Interactive AZERTY, QWERTY and DVORAK.
Shortcuts Quiz
Timed shortcut knowledge quiz.
Shortcut Conflict Detector
Spot duplicate or conflicting shortcuts.
Stream Deck Macro Generator
Visual grid button and macro builder.
Keyboard vs Mouse Time
Hours saved by shortcuts.
Browser Shortcuts
Chrome, Firefox and Edge cheat sheet.
Gmail & Outlook Shortcuts
Email inbox cheat sheet.
Productivity Time Quiz
Hours lost to mouse-only workflows.
Accessibility Shortcuts
Keyboard-only navigation guide.
Custom Autocorrect Builder
Build replacement rules.
Linux & Terminal Shortcuts
Bash, Vim and desktop essentials.