Convert JSON ↔ YAML ↔ XML ↔ CSV ↔ Excel in your browser.

Paste CSV and export a printable PDF of Avery 5160 labels (optional Code128 barcodes).

Combine images into a single PDF. Drag, reorder, export — all offline.

Combine multiple PDFs into one file in your browser.

Create .ics calendar events with timezone support.

Generate QR codes and download PNG/SVG.

Convert epoch ↔ date and across timezones.

Build URLs with query params and UTM presets.

Compare two texts side‑by‑side and copy changes.

Free browser‑based Excel utilities: Merge sheets, Pivot builder, and SQL Studio.

Client‑side CSV tools: 15 converters, validators, and analyzers. No upload.

Convert text between camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, Title Case, and sentence case.

Generate perfect SEO meta tags, Open Graph, and Twitter Cards with live previews. Free, instant, and privacy-focused. No uploads required.

Generate JSON‑LD for Article, FAQ, HowTo, Product, LocalBusiness, Breadcrumbs and more.

Create valid XML sitemaps by crawling a site or pasting URLs, with changefreq, priority, and lastmod options.

Generate robots.txt with allow/disallow rules, user-agents, crawl-delay, and sitemap.

Convert CSV files to JSON instantly in your browser. No uploads required. Perfect for APIs, web apps, and data pipelines. Free, private, and secure.

Convert JSON arrays into CSV in your browser with upload, copy and download.

Convert CSV to Excel (.xlsx) instantly and download the file.

Upload multiple CSV files and merge them into one download.

Split a large CSV into multiple files by row count.

Remove duplicate rows by entire row or a specific column.

Format, validate, and minify JSON with a raw and tree view.

Lint Dockerfiles for common best practices: pinned base images, multi-stage builds, non-root users, and apt cache cleanup.

Generate multi-stage Dockerfiles for Node.js, .NET, Python, Go, and Java projects with sensible defaults.

Convert docker-compose services into basic Kubernetes Deployments and Services.

Quickly validate Kubernetes manifests for apiVersion, kind, and metadata.name.

Estimate Kubernetes replicas and CPU/memory requests from target RPS and per-pod capacity.

Generate GitHub Actions workflows for .NET, Node.js, Python, and Go with build, test, and optional deploy steps.

Validate GitHub Actions workflow files for common structural issues like missing runs-on or jobs.

Generate cron expressions for hourly, daily, or weekly schedules and see human-readable next run times.

Validate OpenAPI JSON or YAML for basic structure and view a normalized JSON version.

Generate minimal TypeScript fetch client functions from an OpenAPI spec.

Paste HTTP response headers and get quick security and caching insights.

Analyze JWT tokens for insecure algorithms and missing claims like exp, iss, and aud.

Build redirect URIs and authorize URLs for GitHub, Google, Azure AD, and custom OAuth2 providers.

Generate OpenTelemetry SDK setup snippets for .NET, Node.js, and Python with OTLP exporters.

Convert JSON and key=value logs into structured JSON for ingestion and querying.

Visualize OTEL/Jaeger-style spans as a tree with relative durations.

Estimate monthly Kubernetes worker node costs from node count, price, and hours per month.

Convert between sustained Mbps and monthly data transfer in GiB.

Estimate monthly object storage costs across hot, cool, and archive tiers using data volume and ops.

Free CSV validator that checks for malformed rows, duplicate headers, delimiter issues, and encoding problems. Runs entirely in your browser - no uploads required.

Render bar, line, or pie charts from CSV data.

Fix BOMs, normalize quotes, trim fields, and standardize delimiters.

Encode/decode text, files, and images to/from Base64 with copy/download and image preview.

Decode JWT header, payload, and signature fully client-side, with formatted JSON and copy/download.

Analyze keyword frequency and density from text; copy or download CSV/Excel.

Test and validate regular expressions with real-time matching, highlighting, and detailed match results. Supports all regex flags and common patterns. 100% client-side, no uploads required.

Generate a plain-language privacy policy for your website or online business in minutes. Simple questions, copy-ready result, no legal jargon.

Create simple Terms & Conditions for your website, app, or online service. Guided questions with a ready-to-copy result.

Generate a clear refund and returns policy for your online store or service. Set refund periods, conditions, and contact details.

Create professional invoices in your browser. Add your logo, client details, line items, tax, and payment terms, then copy or download.

Calculate monthly loan payments, total interest, and total cost for personal, auto, or business loans.

Estimate monthly mortgage payments, total interest, and total cost for a home loan with optional down payment.

See how your savings grow over time with compound interest and optional monthly contributions.

Calculate profit, margin percentage, and markup for your products or services and test different price points.

Calculate return on investment (ROI) as a percentage based on cost and return for campaigns, projects, or purchases.

Count words, characters, sentences, and paragraphs instantly with reading time estimates.

Count characters with limits for X/Twitter, Instagram, TikTok, meta descriptions, and more.

Generate Instagram hashtag sets for your niche with a mix of broad, medium, and niche tags.

Create caption ideas for Instagram with different tones, hooks, and calls to action.

Generate blog post titles and headlines in different styles from a single topic.

Generate email subject line ideas for newsletters, launches, and campaigns.

Estimate South African income tax for salary or freelance income with effective rate and monthly equivalent. Not official SARS calculations.

Estimate South African provisional tax payments for freelancers and small businesses based on expected taxable income.

Add or remove South African VAT at 15%. Convert between VAT-inclusive and VAT-exclusive prices.

Rough tax estimate for freelancers and self‑employed people based on annual profit and simple deductions. Not tax advice.

Add or remove sales tax or VAT for any percentage rate. Convert between tax-inclusive and tax-exclusive amounts.

Compare rough effective tax rates and estimated net income for freelancers and individuals across multiple countries.

Estimate the once-off cost of relocating to another country, including flights, visas, shipping, initial rent, and setup costs.

Estimate how much you could have by retirement and whether you’re on track based on your age, savings, contributions, and expected returns.

Work out how much you need to save each month to reach a target amount by a certain date, or how long it will take at your current savings rate.

Compare debt snowball vs avalanche strategies, see payoff timelines, and estimate total interest saved when you add extra payments.

Plan a simple monthly budget by allocating your income across housing, food, transport, debt, savings, and lifestyle categories.

Track your assets and debts to see your net worth and how it’s split across cash, investments, property, and liabilities.