Free Online Tools & Web Utilities
Explore 41+ free client-side developer utilities, website auditors, calculators, writing tools, and converters. Fast, secure, and runs 100% in your browser with zero data uploaded.
41 Tools
Website Audit Tools
5 ToolsAudit website compliance, technical on-page SEO, loading speed, broken links, and Google Core Web Vitals.
Website Audit for AdSense
Verify policy readiness, legal page compliance, crawlability, and AdSense approval criteria.
Website SEO Audit
Analyze meta tags, heading hierarchies, Open Graph, schema markup, and on-page technical SEO.
Loading Speed Audit
Measure TTFB, server response duration, asset weight, and page payload bottlenecks.
Broken Link Checker
Scan webpage hyperlinks for 404 broken links, redirects, and export fix-lists.
Core Web Vitals Audit
Evaluate LCP, INP, and CLS performance metrics against official Google thresholds.
Ecommerce Tools
5 ToolsExtract store catalogs, convert products to PDF/Excel/CSV, export reviews, and bulk download images.
Product to Catalog PDF
Generate branded, print-ready PDF product catalogs from online store listings.
Products to Catalog Excel
Convert online store listings into structured .xlsx spreadsheets for inventory feeds.
Products to Catalog CSV
Export formatted CSV inventory datasets for multichannel feeds and ERPs.
Product Review Exporter
Extract customer reviews, star ratings, and buyer testimonials into CSV/Excel.
Product Image Downloader
Download high-resolution product photography and image galleries in bulk.
Text & Writing Tools
5 ToolsFree, client-side tools to analyze, format, count, and evaluate text content with zero data uploaded.
Text Analyzer & Word Counter
Word counts, character counts, reading & speaking time, keyword density, and sentiment.
Character & Word Counter
Live counter for characters, words, lines, and social character limits (X, Meta, SEO).
Lorem Ipsum Generator
Generate customizable placeholder dummy text by paragraphs, words, or sentences.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and slug.
Readability Score Calculator
Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index.
Developer Utilities
6 ToolsHandy client-side developer utilities to convert data, inspect cron jobs, format code, and generate hashes.
JSON to YAML Converter
Two-way instant conversion between JSON and YAML with line error markers and formatting.
Base64 Encoder / Decoder
Encode text and files to Base64, or decode Base64 back to readable text or binary.
Cron Expression Parser & Generator
Translate cron expressions into plain English and view upcoming scheduled execution times.
UUID Generator
Generate cryptographically random UUID v4 identifiers in bulk with 1-click batch copy.
Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Compute cryptographic checksums and hashes of any string using native Web Crypto.
Code Minifier (JS, CSS, HTML)
Minify JavaScript, CSS, and HTML source code online to reduce asset payload.
Security & Password Tools
3 ToolsEvaluate password complexity, create uncrackable cryptographic keys, and generate memorable passphrases.
Password Strength Checker
Evaluate password complexity, entropy bits, crack time, visual score meter, and tips.
Password Generator
Create strong, uncrackable random passwords using hardware-backed cryptographic randomness.
Memorable Passphrase Generator
Generate secure, human-memorable Diceware-style multi-word passphrases with custom separators.
Math & Financial Calculators
5 ToolsInteractive calculators for percentage calculations, discounts, restaurant tips, loan EMI, and BMI.
3-in-1 Percentage Calculator
Calculate percentages three ways: % of, what %, and % increase or decrease.
Discount & Sale Price Calculator
Calculate final sale price, amount saved, double discounts, and sales tax.
Tip & Bill Splitter
Calculate tip percentages, split bills evenly, and round up totals across currencies.
Loan EMI & Interest Calculator
Calculate monthly loan installments, total payable interest, and yearly amortization.
BMI Health Calculator
Calculate Body Mass Index for metric and imperial with WHO health classifications.
Date, Time & Age Calculators
5 ToolsInteractive tools for computing exact age, date intervals, countdown timers, Unix epoch, and time zones.
Exact Age Calculator
Calculate exact age down to the second with live ticking clock and birthday countdown.
Date Difference Calculator
Calculate duration between two dates in days, business days, weeks, and months.
Event Countdown Timer
Set a live ticking countdown timer to any upcoming deadline, launch, or milestone.
Unix Timestamp Converter
Convert between Unix epoch timestamps and human-readable UTC/local date strings.
World Time Zone Converter
Convert meeting and schedule times across international zones with live clocks.
Encoding, Design & Accessibility
5 ToolsProduce scannable QR codes, barcodes, verify WCAG contrast, and convert color models.
QR Code Generator
Generate scannable QR codes for URLs, Wi-Fi, or plain text with PNG download.
Morse Code Translator
Translate text to Morse code and Morse back to text with Web Audio tone playback.
WCAG Color Contrast Checker
Evaluate foreground/background color combinations against WCAG 2.1 AA and AAA.
Color Code Converter
Convert colors between HEX, RGB, HSL with interactive color pickers and swatches.
Barcode Generator (Code 128 & EAN-13)
Create standard 1D barcodes in Code 128 and EAN-13 formats with PNG download.
SEO & Content Strategy
2 ToolsClassify search query intent across funnel stages and discover contextual internal link opportunities.
100% Client-Side Privacy: All calculations, text processing, file conversions, and audits run directly in your web browser. No personal inputs, code, or files are ever stored on our servers.