Sitemap

All 88 tools and pages on Zendz Tools — organized by category.

88

Total Tools

8

Sales & Marketing

7

PDF Tools

15

Design & Image

21

Developer Tools

13

SEO

12

Text & Writing

12

Calculators

Pages

HomeBrowse all free online tools
/
AboutAbout Zendz Tools and the developer
/about
FAQFrequently asked questions
/faq
Privacy PolicyHow we handle your data
/privacy-policy
Terms of UseTerms and conditions of use
/terms

Sales & Marketing

8 tools
QR Code GeneratorCreate QR codes for URLs, text, or contact info instantly.
/tools/qr-code-generator
UTM Link BuilderBuild UTM tracking URLs to measure campaign performance in Google Analytics.
/tools/utm-builder
Social Media Image SizesComplete 2025 reference guide for image sizes across Facebook, Instagram, Twitter/X, LinkedIn, YouTube, and more.
/tools/social-media-sizes
Email Subject Line TesterScore your email subject lines for open rate effectiveness — checks length, power words, spam triggers, and more.
/tools/email-subject-tester
Hashtag GeneratorGenerate relevant hashtags for Instagram, TikTok, Twitter/X, and LinkedIn from any keyword or topic.
/tools/hashtag-generator
Google Ads PreviewWrite and preview Google Ads copy with real-time character counting for headlines and descriptions.
/tools/google-ads-preview
Email Signature GeneratorBuild a professional HTML email signature with name, title, company, contact info, and social links. Paste directly into Gmail or Outlook.
/tools/email-signature-generator
Social Media Character CounterLive character and word count checked against post, caption, bio, and headline limits for X, Instagram, LinkedIn, TikTok, YouTube and more.
/tools/social-character-counter

PDF Tools

7 tools
Merge PDFCombine several PDFs into one document. Reorder the files first, then download. Runs entirely in your browser.
/tools/merge-pdf
Split PDFExtract a page range from a PDF into a new document, or split a PDF into one file per page. Nothing is uploaded.
/tools/split-pdf
Organize PDF PagesReorder and delete pages in a PDF from a visual thumbnail grid, then download the rebuilt document.
/tools/organize-pdf
Rotate PDFRotate PDF pages 90, 180, or 270 degrees — all pages or a selected range — and download the result.
/tools/rotate-pdf
Images to PDFCombine JPG and PNG images into a single PDF, one per page, with page-size, orientation, and margin options.
/tools/images-to-pdf
PDF to ImagesRender each page of a PDF to a PNG or JPG at 1×, 2×, or 3× resolution and download them individually or all at once.
/tools/pdf-to-images
Extract Text from PDFPull the selectable text out of a PDF as plain text with optional per-page headings. Copy it or save a .txt file.
/tools/pdf-to-text

Design & Image

15 tools
Image ResizerResize images to exact dimensions or social media presets with format and quality control.
/tools/image-resizer
Gradient GeneratorBuild CSS linear, radial, and conic gradients visually with live preview and one-click copy.
/tools/gradient-generator
Placeholder Image GeneratorGenerate placeholder images with custom dimensions, colors, and text. Export as PNG, SVG, HTML, or Markdown.
/tools/placeholder-image
Border Radius PreviewerVisually preview and generate CSS border-radius with per-corner control, px/% units, and Tailwind output.
/tools/border-radius
Box Shadow GeneratorBuild and stack CSS box shadows visually with per-layer control over offset, blur, spread, color, and inset.
/tools/box-shadow
Color Palette GeneratorGenerate harmonious color palettes — monochromatic, analogous, complementary, triadic, and more.
/tools/color-palette
Aspect Ratio CalculatorCalculate aspect ratios, constrain dimensions, and explore common sizes for any width and height.
/tools/aspect-ratio
Color ConverterConvert between HEX, RGB, HSL, and other color formats.
/tools/color-converter
Favicon GeneratorGenerate favicons in multiple sizes from any image.
/tools/favicon-generator
Image to Base64Convert images to Base64 strings for embedding in HTML or CSS.
/tools/image-base64
Image OptimizerCompress images with lossy or lossless compression for faster load times.
/tools/image-optimizer
Image EditorCrop, filter, and apply presets to images right in your browser.
/tools/image-cropper
Color Contrast CheckerCheck text and background colors against WCAG 2.1 AA and AAA contrast ratios for normal text, large text, and UI components.
/tools/color-contrast-checker
CSS clamp() GeneratorGenerate a fluid CSS clamp() value for responsive font sizes and spacing that scale between two viewport widths without media queries.
/tools/css-clamp-generator
CSS Unit ConverterConvert CSS values between px, rem, em, pt, %, vw and vh with configurable root/parent font sizes and viewport dimensions.
/tools/css-unit-converter

Developer Tools

21 tools
JSON FormatterBeautify and validate JSON data with syntax highlighting.
/tools/json-formatter
Base64 EncoderEncode or decode text and data to Base64 format.
/tools/base64-encoder
URL EncoderEncode or decode URL parameters to make them browser-safe.
/tools/url-encoder
Hash GeneratorGenerate MD5, SHA1, SHA256 cryptographic hashes from any string.
/tools/hash-generator
Password GeneratorCreate strong, secure passwords with customizable options.
/tools/password-generator
UUID GeneratorGenerate universally unique identifiers (UUIDs) for apps and databases.
/tools/uuid-generator
Unix Timestamp ConverterConvert Unix timestamps to readable dates and vice versa.
/tools/unix-timestamp
SQL FormatterFormat messy SQL queries into clean, readable code.
/tools/sql-formatter
HTML MinifierCompress HTML by removing whitespace and comments.
/tools/html-minifier
User Agent ParserDecode user-agent strings to identify browsers and devices.
/tools/user-agent-parser
JWT DecoderDecode and inspect JSON Web Tokens — view header, payload, expiry status, and algorithm instantly.
/tools/jwt-decoder
Regex TesterTest regular expressions with live match highlighting and flag toggles. Includes 8 built-in presets.
/tools/regex-tester
CSS MinifierCompress CSS by removing comments, whitespace, and redundant characters with before/after size savings.
/tools/css-minifier
Markdown EditorWrite and preview Markdown with live rendering. Supports headings, code blocks, tables, and more.
/tools/markdown-editor
Pomodoro TimerStay focused with the Pomodoro Technique — customizable work and break intervals with session tracking.
/tools/pomodoro-timer
JSON ↔ CSV ConverterConvert JSON arrays to CSV or CSV data to JSON instantly — with download support.
/tools/json-csv-converter
Number Base ConverterConvert numbers between Binary, Octal, Decimal, and Hexadecimal with bit visualization.
/tools/number-base-converter
HTML Entity Encoder / DecoderEscape reserved characters to HTML entities or decode them back — supports named and numeric entities and encoding all non-ASCII characters.
/tools/html-entity-encoder
Cron Expression ParserExplain a 5-field cron expression in plain English and preview the next 5 run times. Supports ranges, lists, steps, and month/day names.
/tools/cron-expression-parser
JSON to TypeScriptGenerate TypeScript interfaces from a JSON sample — nested objects, arrays merged into one shape, optional keys and nullable fields.
/tools/json-to-typescript
URL Parser & Query String EditorBreak a URL into protocol, host, port, path, query and fragment, edit its query parameters, and copy the rebuilt URL.
/tools/url-parser

SEO

13 tools
Meta Tag GeneratorGenerate SEO meta tags to improve search engine visibility.
/tools/meta-tag-generator
Open Graph GeneratorCreate Open Graph meta tags for rich social media link previews.
/tools/og-generator
Twitter Card GeneratorGenerate Twitter Card tags to control how links appear on Twitter.
/tools/twitter-card-generator
Schema Markup GeneratorBuild JSON-LD structured data for better SEO and rich results.
/tools/schema-generator
Keyword Density CheckerAnalyze keyword frequency and density in your content to optimize for SEO.
/tools/keyword-density
SERP PreviewPreview how your page title and meta description appear in Google search results.
/tools/serp-preview
Robots.txt GeneratorBuild a robots.txt file visually with crawler rules, AI bot blocking, sitemap URL, and crawl delay.
/tools/robots-txt-generator
Slug GeneratorConvert any text into a clean, SEO-friendly URL slug with custom separator and length options.
/tools/slug-generator
Canonical Tag GeneratorGenerate HTML canonical link tags to prevent duplicate content and consolidate SEO signals.
/tools/canonical-tag
Hreflang Tag GeneratorGenerate hreflang tags for international SEO to target the right language and country audiences.
/tools/hreflang-generator
Robots.txt TesterTest if a URL is allowed or blocked by your robots.txt rules. Shows which rule matched and supports all user-agents.
/tools/robots-txt-tester
XML Sitemap GeneratorBuild and download an XML sitemap with URL, priority, change frequency, and last modified date fields.
/tools/xml-sitemap-generator
SEO Title GeneratorGenerate SEO-optimized page title ideas from a keyword and brand name with character length scoring.
/tools/seo-title-generator

Text & Writing

12 tools
Text Case ConverterConvert text to uppercase, lowercase, title case, or camelCase.
/tools/text-case
Text Diff CheckerCompare two blocks of text and highlight the differences.
/tools/text-diff
Word CounterCount words, characters, sentences, paragraphs and estimate reading and speaking time.
/tools/word-counter
Readability ScorerScore content with Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index.
/tools/readability-scorer
Lorem Ipsum GeneratorGenerate Lorem Ipsum placeholder text by paragraphs, sentences, or words with a custom count.
/tools/lorem-ipsum
Text ToolkitSort, dedupe, shuffle, reverse, trim, re-case, number, join and split lines of text — chain operations in one box.
/tools/text-toolkit
Find & ReplaceBulk find and replace in text with plain-text or regex matching, case-insensitive and whole-word options, and a live match count.
/tools/find-and-replace
Remove Line BreaksStrip hard line breaks from text copied out of PDFs and emails — unwrap while keeping paragraphs, or remove every newline.
/tools/remove-line-breaks
Word Frequency CounterRank how often each word or 2- and 3-word phrase appears in your text, with frequency bars, percentages, and a stop-word filter.
/tools/word-frequency-counter
Caesar Cipher & ROT13Encode 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.
/tools/caesar-cipher
NATO Phonetic Alphabet ConverterSpell out names, codes, and serial numbers with the NATO phonetic alphabet (Alfa, Bravo, Charlie) for clear phone and radio use.
/tools/nato-phonetic-alphabet
Fancy Text GeneratorConvert plain text into 12 Unicode styles — bold, italic, script, monospace, small caps and more — to paste into social bios and posts.
/tools/fancy-text-generator

Calculators

12 tools
A/B Test CalculatorCalculate statistical significance of A/B tests — enter visitors and conversions to see if your results are conclusive.
/tools/ab-test-calculator
Shopee Affiliate ROAS CalculatorWork out commission earned, net profit, ROAS, and break-even for ads you run on your Shopee Affiliate links.
/tools/shopee-affiliate-roas-calculator
CAC & LTV CalculatorCalculate customer acquisition cost, lifetime value, the LTV:CAC ratio, and payback period to check if growth is profitable.
/tools/cac-ltv-calculator
Ad Campaign Metrics CalculatorEnter spend, impressions, clicks, conversions and revenue to get CPM, CPC, CTR, CPA, conversion rate, ROAS and ROI.
/tools/ad-campaign-metrics-calculator
Profit Margin & Markup CalculatorFind selling price, profit, gross margin and markup from your cost — or price a product to hit a target margin.
/tools/profit-margin-calculator
Break-Even Point CalculatorCalculate break-even units and revenue from fixed costs, price and variable cost — plus units needed to hit a target profit.
/tools/break-even-point-calculator
Discount & Sale Price CalculatorFind the sale price after a discount, the percent off between two prices, or the original price before the markdown. Supports stacked discounts.
/tools/discount-calculator
Sales Tax & VAT CalculatorAdd 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.
/tools/sales-tax-calculator
Percentage CalculatorFind a percentage of a number, what percentage one number is of another, or the percentage increase or decrease between two values.
/tools/percentage-calculator
Tip CalculatorCalculate the tip at any percentage and split the bill evenly between any number of people, with an option to round up each share.
/tools/tip-calculator
Loan Payment CalculatorWork out the monthly payment, total interest, and total cost of an amortizing loan from the amount, rate, and term.
/tools/loan-calculator
Compound Interest CalculatorProject the future value of savings or an investment with compound interest and optional regular monthly contributions.
/tools/compound-interest-calculator

Looking for the XML sitemap?

For search engines and crawlers

/sitemap.xml →