Free Online Tools for Everyone
88+ free tools for developers, SEO specialists, marketers, and designers — no sign-up required.
Sales & Marketing
8 toolsCampaign links, ad and email previews, QR codes, and social-media helpers.
QR Code Generator
Create QR codes for URLs, text, or contact info instantly.
UTM Link Builder
Build UTM tracking URLs to measure campaign performance in Google Analytics.
Social Media Image Sizes
Complete 2025 reference guide for image sizes across Facebook, Instagram, Twitter/X, LinkedIn, YouTube, and more.
Email Subject Line Tester
Score your email subject lines for open rate effectiveness — checks length, power words, spam triggers, and more.
Hashtag Generator
Generate relevant hashtags for Instagram, TikTok, Twitter/X, and LinkedIn from any keyword or topic.
Google Ads Preview
Write and preview Google Ads copy with real-time character counting for headlines and descriptions.
Email Signature Generator
Build a professional HTML email signature with name, title, company, contact info, and social links. Paste directly into Gmail or Outlook.
Social Media Character Counter
Live character and word count checked against post, caption, bio, and headline limits for X, Instagram, LinkedIn, TikTok, YouTube and more.
PDF Tools
7 toolsMerge, split, organize, rotate, and convert PDFs — your files never leave your browser.
Merge PDF
Combine several PDFs into one document. Reorder the files first, then download. Runs entirely in your browser.
Split PDF
Extract a page range from a PDF into a new document, or split a PDF into one file per page. Nothing is uploaded.
Organize PDF Pages
Reorder and delete pages in a PDF from a visual thumbnail grid, then download the rebuilt document.
Rotate PDF
Rotate PDF pages 90, 180, or 270 degrees — all pages or a selected range — and download the result.
Images to PDF
Combine JPG and PNG images into a single PDF, one per page, with page-size, orientation, and margin options.
PDF to Images
Render each page of a PDF to a PNG or JPG at 1×, 2×, or 3× resolution and download them individually or all at once.
Extract Text from PDF
Pull the selectable text out of a PDF as plain text with optional per-page headings. Copy it or save a .txt file.
Design & Image
15 toolsColor, image editing, and asset generation tools for designers.
Image Resizer
Resize images to exact dimensions or social media presets with format and quality control.
Gradient Generator
Build CSS linear, radial, and conic gradients visually with live preview and one-click copy.
Placeholder Image Generator
Generate placeholder images with custom dimensions, colors, and text. Export as PNG, SVG, HTML, or Markdown.
Border Radius Previewer
Visually preview and generate CSS border-radius with per-corner control, px/% units, and Tailwind output.
Box Shadow Generator
Build and stack CSS box shadows visually with per-layer control over offset, blur, spread, color, and inset.
Color Palette Generator
Generate harmonious color palettes — monochromatic, analogous, complementary, triadic, and more.
Aspect Ratio Calculator
Calculate aspect ratios, constrain dimensions, and explore common sizes for any width and height.
Color Converter
Convert between HEX, RGB, HSL, and other color formats.
Favicon Generator
Generate favicons in multiple sizes from any image.
Image to Base64
Convert images to Base64 strings for embedding in HTML or CSS.
Image Optimizer
Compress images with lossy or lossless compression for faster load times.
Image Editor
Crop, filter, and apply presets to images right in your browser.
Color Contrast Checker
Check text and background colors against WCAG 2.1 AA and AAA contrast ratios for normal text, large text, and UI components.
CSS clamp() Generator
Generate a fluid CSS clamp() value for responsive font sizes and spacing that scale between two viewport widths without media queries.
CSS Unit Converter
Convert CSS values between px, rem, em, pt, %, vw and vh with configurable root/parent font sizes and viewport dimensions.
Developer Tools
21 toolsUtilities for writing, formatting, encoding, and debugging code.
JSON Formatter
Beautify and validate JSON data with syntax highlighting.
Base64 Encoder
Encode or decode text and data to Base64 format.
URL Encoder
Encode or decode URL parameters to make them browser-safe.
Hash Generator
Generate MD5, SHA1, SHA256 cryptographic hashes from any string.
Password Generator
Create strong, secure passwords with customizable options.
UUID Generator
Generate universally unique identifiers (UUIDs) for apps and databases.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and vice versa.
SQL Formatter
Format messy SQL queries into clean, readable code.
HTML Minifier
Compress HTML by removing whitespace and comments.
User Agent Parser
Decode user-agent strings to identify browsers and devices.
JWT Decoder
Decode and inspect JSON Web Tokens — view header, payload, expiry status, and algorithm instantly.
Regex Tester
Test regular expressions with live match highlighting and flag toggles. Includes 8 built-in presets.
CSS Minifier
Compress CSS by removing comments, whitespace, and redundant characters with before/after size savings.
Markdown Editor
Write and preview Markdown with live rendering. Supports headings, code blocks, tables, and more.
Pomodoro Timer
Stay focused with the Pomodoro Technique — customizable work and break intervals with session tracking.
JSON ↔ CSV Converter
Convert JSON arrays to CSV or CSV data to JSON instantly — with download support.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal with bit visualization.
HTML Entity Encoder / Decoder
Escape reserved characters to HTML entities or decode them back — supports named and numeric entities and encoding all non-ASCII characters.
Cron Expression Parser
Explain a 5-field cron expression in plain English and preview the next 5 run times. Supports ranges, lists, steps, and month/day names.
JSON to TypeScript
Generate TypeScript interfaces from a JSON sample — nested objects, arrays merged into one shape, optional keys and nullable fields.
URL Parser & Query String Editor
Break a URL into protocol, host, port, path, query and fragment, edit its query parameters, and copy the rebuilt URL.
SEO
13 toolsMeta tags, structured data, search previews, and crawl control to improve search rankings.
Meta Tag Generator
Generate SEO meta tags to improve search engine visibility.
Open Graph Generator
Create Open Graph meta tags for rich social media link previews.
Twitter Card Generator
Generate Twitter Card tags to control how links appear on Twitter.
Schema Markup Generator
Build JSON-LD structured data for better SEO and rich results.
Keyword Density Checker
Analyze keyword frequency and density in your content to optimize for SEO.
SERP Preview
Preview how your page title and meta description appear in Google search results.
Robots.txt Generator
Build a robots.txt file visually with crawler rules, AI bot blocking, sitemap URL, and crawl delay.
Slug Generator
Convert any text into a clean, SEO-friendly URL slug with custom separator and length options.
Canonical Tag Generator
Generate HTML canonical link tags to prevent duplicate content and consolidate SEO signals.
Hreflang Tag Generator
Generate hreflang tags for international SEO to target the right language and country audiences.
Robots.txt Tester
Test if a URL is allowed or blocked by your robots.txt rules. Shows which rule matched and supports all user-agents.
XML Sitemap Generator
Build and download an XML sitemap with URL, priority, change frequency, and last modified date fields.
SEO Title Generator
Generate SEO-optimized page title ideas from a keyword and brand name with character length scoring.
Text & Writing
12 toolsCount, compare, clean, transform, and encode text — for writers, editors, and marketers.
Text Case Converter
Convert text to uppercase, lowercase, title case, or camelCase.
Text Diff Checker
Compare two blocks of text and highlight the differences.
Word Counter
Count words, characters, sentences, paragraphs and estimate reading and speaking time.
Readability Scorer
Score content with Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by paragraphs, sentences, or words with a custom count.
Text Toolkit
Sort, dedupe, shuffle, reverse, trim, re-case, number, join and split lines of text — chain operations in one box.
Find & Replace
Bulk find and replace in text with plain-text or regex matching, case-insensitive and whole-word options, and a live match count.
Remove Line Breaks
Strip hard line breaks from text copied out of PDFs and emails — unwrap while keeping paragraphs, or remove every newline.
Word Frequency Counter
Rank how often each word or 2- and 3-word phrase appears in your text, with frequency bars, percentages, and a stop-word filter.
Caesar Cipher & ROT13
Encode or decode text with a Caesar cipher or ROT13, with any shift from 0 to 25 and a show-all-25-shifts view for cracking.
NATO Phonetic Alphabet Converter
Spell out names, codes, and serial numbers with the NATO phonetic alphabet (Alfa, Bravo, Charlie) for clear phone and radio use.
Fancy Text Generator
Convert plain text into 12 Unicode styles — bold, italic, script, monospace, small caps and more — to paste into social bios and posts.
Calculators
12 toolsPercentages, pricing, marketing metrics, loans, and interest — all client-side.
A/B Test Calculator
Calculate statistical significance of A/B tests — enter visitors and conversions to see if your results are conclusive.
Shopee Affiliate ROAS Calculator
Work out commission earned, net profit, ROAS, and break-even for ads you run on your Shopee Affiliate links.
CAC & LTV Calculator
Calculate customer acquisition cost, lifetime value, the LTV:CAC ratio, and payback period to check if growth is profitable.
Ad Campaign Metrics Calculator
Enter spend, impressions, clicks, conversions and revenue to get CPM, CPC, CTR, CPA, conversion rate, ROAS and ROI.
Profit Margin & Markup Calculator
Find selling price, profit, gross margin and markup from your cost — or price a product to hit a target margin.
Break-Even Point Calculator
Calculate break-even units and revenue from fixed costs, price and variable cost — plus units needed to hit a target profit.
Discount & Sale Price Calculator
Find the sale price after a discount, the percent off between two prices, or the original price before the markdown. Supports stacked discounts.
Sales Tax & VAT Calculator
Add sales tax or VAT to a net price, or extract the tax from a tax-inclusive total. Presets for UK VAT, EU, GST and more.
Percentage Calculator
Find a percentage of a number, what percentage one number is of another, or the percentage increase or decrease between two values.
Tip Calculator
Calculate the tip at any percentage and split the bill evenly between any number of people, with an option to round up each share.
Loan Payment Calculator
Work out the monthly payment, total interest, and total cost of an amortizing loan from the amount, rate, and term.
Compound Interest Calculator
Project the future value of savings or an investment with compound interest and optional regular monthly contributions.