All Your Developer Toolsin One Place

Check WCAG color contrast ratios for accessibility.

Convert colors between HEX, RGB, HSL, HSV, CMYK, and HWB. Includes tints & shades, WCAG contrast ratio, CSS snippets, and color history.

Generate harmonious color palettes and schemes.

Extract exact Hex, RGB, and HSL color codes from any image using a precision eyedropper tool.

Encode text to Base64 or decode Base64 to text.

Convert CSV files to JSON arrays instantly — with header mapping, delimiter options, and type inference.

Convert HTML into clean, readable Markdown — preserving headings, links, images, lists, and tables.

Format, validate, and beautify JSON instantly — with clear error messages, Tree View, Diff mode, and Schema validation.

Create GFM Markdown tables visually — add rows/columns, align cells, import from CSV/spreadsheet paste, and copy the formatted table code.

Convert Markdown to clean, semantic HTML with live preview — supports GFM tables, task lists, syntax highlighting, and custom sanitization.

Create complex CSS border-radius shapes with independent corner controls — from rounded buttons to organic blobs.

Create CSS box shadows with a visual editor.

Create custom CSS clip-path shapes visually.

Format, indent, and beautify minified or messy CSS code — with configurable indentation and sorting options.

Create custom-styled CSS checkboxes — checkmark, dot, fill variants with animated states and ARIA-accessible HTML.

Create beautiful CSS gradients with a visual editor.

Convert code snippets to beautiful images for sharing.

Translate cron expressions to plain English — see next run times, validate schedules, and learn cron syntax with live examples.

Build and decode cron schedule expressions visually — get human-readable descriptions and next run times.

Query A, AAAA, MX, TXT, CNAME, NS, and SOA DNS records globally using Cloudflare DoH — for email, SSL, and domain debugging.

Convert Unix epoch timestamps to human-readable dates and vice versa — with timezone support.

Format and beautify minified or messy HTML code.

Generate barcodes in CODE128, EAN-13, UPC-A, CODE39, and ITF formats — with customizable sizing, colors, and PNG/SVG download.

Generate Lorem Ipsum, Kafka, Pangrams, and other placeholder text varieties — with word count, paragraph count, and HTML wrapping options.

Generate syntactically valid test IBANs for 30+ countries — correct checksum, wrong real account.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.

Shuffle any list, pick N random winners, or run a fair lottery using the Fisher-Yates algorithm.

Generate structured mock JSON API responses from a schema — for frontend testing and component prototyping.

Convert PNG, JPG, WebP, and SVG images to Base64 strings for direct embedding in HTML, CSS, or JSON payloads.

Create favicons from text, emoji, or images — generates ICO, PNG, and all required Apple Touch icon sizes.

Remove image backgrounds instantly with AI. Powered by a client-side WASM model — your image never leaves your browser. Free, private, and lightning-fast.

Generate descriptive captions for images using local AI.

Extract a dominant color palette from any image using quantization — get 5–10 key colors with Hex, RGB, and HSL codes.

Reduce image file size online — compress JPEG, PNG, and WebP without losing visible quality.

Convert any HTML and CSS code into a PDF document instantly in your browser — no upload, no server.

Convert JPEG, PNG, and WebP images into a single PDF document — drag to reorder, choose page size.

Combine multiple PDF files into a single document — drag to reorder, merge instantly in your browser.

Convert PDF pages to high-quality JPEG or PNG images — choose DPI, page range, and format.

Make digital PDFs look like scanned documents.

Extract specific pages or split a PDF into separate files — by range, every page, or custom groups.

Test how secure your password is — get an entropy score, estimated crack time, and actionable tips.

Generate SEO title tags, meta descriptions, Open Graph, and Twitter Card tags for any webpage.

Generate Open Graph and Twitter Card meta tags for rich social media link previews.

Build a valid robots.txt file with visual rules, user-agent controls, and sitemap declaration.

Validate XML sitemaps for syntax errors, structure issues, and SEO best-practice compliance.

Convert any text to a clean, SEO-friendly URL slug — handles special characters, accents, and spaces.

Create realistic fake tweet mockups with custom profile, blue checkmark, metrics and dark/light mode.

Convert tweet text to a beautifully designed image card — share quotes, testimonials, and posts on Instagram, LinkedIn, and Pinterest.

Estimate your X (Twitter) creator ad revenue — understand the CPM model, payout thresholds, and revenue-per-impression math.

Download the highest-resolution thumbnail from any public Vimeo video using the Vimeo oEmbed API.

Download thumbnails from any YouTube video in high quality.

Convert text to ASCII art using FIGlet-style fonts — create banners for code comments, README files, terminal scripts, and creative displays.

Convert text to Bionic Reading format — bold fixation points guide your eyes for faster reading and better comprehension.

Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE instantly.

Compare two text blocks and see additions, deletions, and changes highlighted line-by-line using the Myers diff algorithm — like Git diff in a browser.

Remove duplicate lines from any text — with options for case sensitivity, sort, and keeping first or last occurrence.

Add Unicode combining characters to text to create glitchy Zalgo effects — adjustable intensity for cyberpunk, horror, or creative aesthetics.