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42+ free developer, SEO, AI and productivity tools to simplify your work. No signup β€” everything runs in your browser.

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42 tools
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JSON Formatter

Format, validate, minify & convert JSON to YAML, XML, CSV or TypeScript.

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JSON Validator

Check if JSON is valid and get the exact line, column & reason for any error.

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UUID Generator

Bulk-generate random UUID v4, time-ordered v7 or NIL β€” with format options.

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Password Generator

Strong random passwords with custom length, character sets & a strength meter.

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#️⃣

Hash Generator

MD5, SHA-1, SHA-256, SHA-384 & SHA-512 checksums of any text or file.

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QR Code Generator

Custom QR codes for URLs, WiFi & text β€” pick colors and download PNG or SVG.

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Base64 Decoder

Decode Base64 back to text, a file or a previewed image β€” URL-safe & data URIs.

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Lorem Ipsum Generator

Placeholder text by paragraphs, sentences, words or lists β€” plain or HTML.

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Regex Tester

Test regular expressions with live match highlighting, capture groups & replace.

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HTML Formatter

Beautify or minify HTML β€” preserves pre, script, style & textarea content.

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🎯

CSS Minifier

Minify or beautify CSS and see the size saved β€” safe with url() & calc().

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JS Minifier

Minify JavaScript with real parsing (Terser) β€” compress, mangle & see the savings.

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JWT Decoder

Decode a JSON Web Token's header, payload & claims β€” with optional HS256 verify.

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Slug Generator

Convert any text to SEO-friendly slugs β€” kebab, snake, camel, Pascal & more.

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Base64 Encoder

Encode / decode text, files & images. Standard + URL-safe, data URI snippets.

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Word Counter

Words, characters, syllables, reading time, Flesch-Kincaid & keyword density.

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🎨

Color Converter

HEX, RGB, HSL, OKLCH, LAB, CMYK, Tailwind & palettes β€” with WCAG/APCA contrast.

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Timestamp Converter

Unix, ISO 8601, ObjectId, UUID, snowflake, ticks, FILETIME & time-zone math.

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SQL Formatter

Beautify or minify SQL β€” keyword casing, indentation, JOINs, subqueries & CTEs.

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✍️

Markdown Editor

Write GitHub-flavored Markdown with live preview β€” tables, task lists, code & export.

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⏰

Cron Expression Parser

Explain any cron schedule in plain English, validate it & preview the next run times.

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Color Palette Generator

Build harmonious schemes β€” complementary, analogous, triadic & more. Lock & export.

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Robots.txt Generator

Build a valid robots.txt β€” per-bot Allow/Disallow, crawl-delay, sitemaps & AI-bot blocking.

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🏷️

Meta Tag Generator

Generate SEO, Open Graph & Twitter Card tags with live Google & social previews.

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FAQ Schema Generator

Turn Q&A into valid FAQPage JSON-LD for Google rich results β€” with live preview.

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Open Graph Generator

Full og: tags with article/profile fields & live Facebook, X and LinkedIn previews.

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Blog Title Generator

Turn any topic into dozens of catchy, SEO-friendly headline ideas β€” filter & copy.

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Article Outline Generator

Get a ready-to-write H2/H3 outline for any topic β€” how-to, guide, listicle & more.

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Paragraph Rewriter

Reword text with synonym substitution β€” adjustable strength & highlighted changes.

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Product Description Generator

Turn a product & features into a tagline, descriptions, bullets & SEO meta β€” by tone.

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Code Explainer

Paste a snippet for a plain-English, line-by-line breakdown of what the code does.

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🩺

Code Reviewer

Flag common code smells & risks β€” loose equality, eval, secrets & more β€” with a grade.

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🧱

SQL Query Generator

Visually build SELECT, INSERT, UPDATE & DELETE β€” columns, JOINs, WHERE, ORDER BY & more.

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Diff Checker

Compare two texts or code blocks β€” added, removed & changed lines highlighted.

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Image to Base64

Convert PNG, JPG, SVG, GIF or WebP to a Base64 data URI for HTML, CSS, JSON & Markdown.

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Markdown to HTML

Convert GitHub-flavored Markdown to clean HTML β€” tables, task lists, code blocks & preview.

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Color Picker

Pick a color with hue & alpha, eyedrop from screen, and copy HEX, RGB & HSL instantly.

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QR Code Scanner

Scan a QR code with your camera or from an image and instantly read its contents.

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Password Strength Checker

Test how strong a password is β€” entropy, crack-time estimate, checks & tips. Never uploaded.

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Image Compressor

Compress JPG, PNG & WebP images β€” adjust quality, resize & download smaller files.

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Image Resizer

Resize images by pixels or percentage β€” lock aspect ratio, crop, convert & download.

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Image Cropper

Crop an image to any area or fixed ratio β€” drag the selection, then convert & download.

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