Format, minify and validate JSON with syntax error details and document stats.

Convert CSV to JSON and JSON to CSV with delimiter and quote support.

Test regular expressions with live match highlighting, groups and flags.

Encode text or files to Base64 with URL-safe and Unicode support.

Decode Base64 strings back to text or files with Unicode support.

Percent-encode URL strings for query parameters and paths.

Decode percent-encoded URLs and query strings instantly.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text or files.

Generate RFC 4122 v4 UUIDs in bulk with one-click copy.

Decode JWT headers and payloads locally — no data leaves your browser.

Convert Unix timestamps to human dates and back, in any timezone.

Build cron expressions from presets or custom fields with validation.

Generate lorem ipsum paragraphs, sentences and words for mockups.

Write Markdown and preview rendered HTML side by side.

Convert text to uppercase, lowercase, title, camelCase, snake_case and more.

Turn any title or phrase into a clean URL slug.

Generate strong random passwords with a live strength meter.

Analyze password strength with entropy, character sets and crack-time estimates.

Generate random strings with custom length and character sets.

Generate random numbers between any range, one or many at a time.

Validate email format, spot typos and check disposable domains.

Validate card numbers with the Luhn algorithm and detect the brand.

Analyze IPv4/IPv6 addresses — class, range, public/private, subnet details.

Look up A, AAAA, MX, TXT, NS, CNAME and SOA records via Cloudflare DNS.

Generate title, description, Open Graph and Twitter meta tags with preview.

Generate JSON-LD structured data for Article, FAQ, Product, Organization and Event.

Generate robots.txt rules with user agents, paths and sitemap lines.

Generate an XML sitemap from a list of URLs with priority and frequency.

Find top keywords in text with counts and density percentages.

Score text with Flesch Reading Ease and grade-level formulas.

Preview how your title and description appear in Google search results.

Count words, characters, sentences, paragraphs and reading time.

Compress and resize images in the browser with quality control.

Resize images to exact dimensions or percentage, with format selection.

Convert PNG and JPG images to WebP with quality slider.

Upscale images 2-8x in your browser with no upload.

Pick colors, convert HEX/RGB/HSL and generate shade palettes.

Combine multiple PDF files into one, in your browser.

Extract pages or page ranges from a PDF file.

Reduce PDF file size by re-encoding pages in your browser.

Convert .xlsx, .xls, .csv and .tsv spreadsheets to a clean PDF.

Extract text from a PDF into table rows and export as .xlsx.

Percentage of, percentage change and percentage increase/decrease.

Monthly payment, total interest and full amortization schedule.

Length, weight, temperature, data, area, volume, time and speed conversion.

Exact age in years, months, days, plus days until your next birthday.

Days between dates, add/subtract days from a date, weekday lookup.

Convert between decimal, hex, binary and octal with ASCII view.

Body Mass Index with healthy-range guidance.

Live exchange rates for 160+ world currencies, auto-detecting your country.

Generate 10 SEO headline formulas from any topic instantly.

Write 3 SEO meta descriptions from your content, ≤160 characters.

Generate 5 FAQ questions and answers from any topic.

Build structured AI prompts with role, task, format and constraints.

Rewrite AI-sounding text: remove clichés, vary openings, add contractions.