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Convert CSV data to a clean JSON array. Handles quoted fields, auto-types numbers and booleans.

Turn any JSON array of objects into downloadable CSV. Download as .csv or copy to clipboard.

Each CSV row becomes one JSON Line (NDJSON). Perfect for ML pipelines and streaming data.

Flatten a JSON array into newline-delimited JSON. Download as .jsonl for data pipelines.

Convert CSV training data (system/user/assistant columns) into OpenAI fine-tuning JSONL. Auto-detects format.

Convert JSON arrays to the OpenAI messages format required for fine-tuning chat models.

Format, validate, and explore JSON with a collapsible tree view. Instant error detection.

Compare two texts side-by-side and highlight additions, deletions, and changes.

Paste any text or HTML — extract all URLs instantly. Toggle unique-only, copy all at once.

Enter a URL, get clean readable text. Strips HTML tags, scripts, and noise. Shows word count.

Add a WhatsApp chat button to your website in 60 seconds. Customise, preview, copy one line of code.

Compare API costs for GPT-5, Claude, Gemini, Grok, DeepSeek & 100+ LLMs. Estimate monthly token spend.

Summarize long articles and text instantly using an in-browser AI model.

Rewrite text in multiple tones (formal, casual, creative) using AI in your browser.

Check grammar, spelling, and style across 30+ languages. Click to fix errors.

Live speech-to-text transcription. Free, no limits, supports 50+ languages.

Remove image backgrounds instantly with AI. Download transparent PNGs.

Extract text from images, screenshots, and scanned documents in 100+ languages.

Generate custom QR codes for URLs, WiFi, emails. Customise colors and download PNG.

Generate optimized HTML meta tags for SEO, Open Graph, and Twitter Cards with live Google SERP preview.

Score your headlines for SEO, emotional impact, and readability. Get power word analysis.

Analyze keyword frequency and density in any text. N-gram support with stop word filtering.

Generate structured data for FAQs, articles, products, events, and how-to guides.

Compare two texts and highlight overlapping phrases. N-gram fingerprinting with Jaccard similarity.

Encode and decode Base64 strings. Handles Unicode, files, and data URIs.

Generate UUID v4, NanoID, and ULID. Bulk generate up to 500 IDs. Crypto-secure.

Convert between HEX, RGB, HSL, and CMYK. Visual picker with RGB/HSL sliders.

Build cron expressions visually. Plain English explanation and next 10 scheduled runs.

Generate regex patterns from plain English. 25+ common patterns with live tester.

Count tokens for GPT-4, Claude, Gemini, and Llama. Uses tiktoken — same as OpenAI.

Convert Markdown to HTML with live preview. GFM support including tables and code.

Format SQL queries with proper indentation. MySQL, PostgreSQL, SQLite, BigQuery.

Solve algebraic equations, simplify expressions, and compute derivatives with math.js.

Calculate mean, median, mode, standard deviation, variance, quartiles, and more.

Convert between 50+ units: length, weight, temperature, volume, speed, area, data.

Plot math functions interactively. Zoom, pan, and download as PNG. Uses Plotly.js.

Compress JPEG, PNG, and WebP images in your browser. Before/after size comparison.

Upload any image and extract its dominant colors using K-means clustering.

Scan QR codes and barcodes from images. Supports 20+ formats including EAN and UPC.

Generate word cloud visualizations from text. Download as PNG.

Identify objects in photos using MobileNet AI. Top-5 predictions with confidence.

Detect multiple objects with bounding boxes using COCO-SSD. 80 categories.

Detect faces and facial landmarks using BlazeFace AI. Real-time in browser.