Tools that can't leak your data — because they never see it.
25 free developer & marketing utilities that run entirely in your browser. No uploads. No accounts. No cookies.
All Tools
Every tool runs 100% client-side. Pick a category or browse all.
25 tools available
Email Signature Creator
HTML signatures for Gmail, Outlook & Apple Mail
Build client-safe HTML email signatures. 3 templates, brand colors, logo URL, one-click copy or HTML export.
MX Record Lookup
Find mail servers and detect email providers for any domain
Look up MX records for any domain. Identifies the email provider (Google Workspace, Microsoft 365, Proton Mail, etc.), shows all mail servers with priority and TTL, and checks your SPF record — via Cloudflare DNS-over-HTTPS.
BIMI Validator
Show your logo in Gmail, Yahoo Mail & Apple Mail
Validate your BIMI record — check the _bimi TXT record, SVG logo URL, VMC certificate, and DMARC prerequisite. Preview how your logo will appear in the inbox and see exactly what's blocking it.
DNS Email Diagnostics
SPF, DKIM, DMARC, MX, BIMI & MTA-STS in one check
Comprehensive email authentication check for any domain. SPF, DKIM (18 selectors), DMARC, MX, BIMI, and MTA-STS all checked in parallel via Cloudflare DNS-over-HTTPS. Health score, raw records, and fix guidance.
HTML Email Pre-flight Checker
Catch Outlook breakage and spam signals before you hit send
Paste your email HTML and get a 0–100 pre-flight score: client compatibility for Gmail, Outlook, Apple Mail & Yahoo (caniemail data), spam-trigger signals, structure and link checks, plus a simulated dark-mode preview. 100% client-side.
.env Deep Sanitizer
Redact secrets from any config file instantly
Paste or drop your .env, .yaml, .json, or .ts file. API keys, tokens, and passwords are instantly redacted. Zero uploads. Zero servers.
OCR Privacy Redactor
Redact PII from scanned documents using local OCR
Upload a scanned document or screenshot. OCR runs locally in your browser (Tesseract.js WebAssembly), auto-detects emails, phone numbers, SSNs, credit cards, and more, then exports a redacted PNG — nothing ever leaves your device.
JWT Debugger
Decode, inspect, and verify JWT tokens client-side
Paste any JWT and instantly see the decoded header and payload, all standard claims, expiry status, and verify an HMAC-SHA256 signature with your secret — entirely in your browser. No tokens ever leave your device.
Privacy Policy Generator
Generate GDPR & CCPA privacy policies in seconds
Fill in your company details, select data types collected and third-party services, and instantly get a GDPR- and CCPA-compliant privacy policy in Markdown. Download or copy. 100% client-side — not legal advice.
Image EXIF Stripper
Remove GPS, camera, and private metadata from photos
Drop any JPEG or PNG to strip EXIF metadata — GPS coordinates, camera model, timestamps, and author info. Preview the metadata before and after, then download the clean image. No uploads, ever.
AI Regex Generator
Plain English → production regex in seconds
Describe your pattern in plain English. Get back a production-ready regex, step-by-step explanation, and live token tester. JS, Python, PCRE, Go.
Cron Expression Explainer
Decode or visually build cron expressions with platform snippets
Paste a cron expression to decode it, or build one field-by-field with the visual builder. Plain-English explanation, next 10 run times, and copy-paste snippets for GitHub Actions, Kubernetes, AWS EventBridge, and systemd.
JSON → TypeScript Converter
JSON → TypeScript, Zod, JSON Schema, OpenAPI, Yup & Valibot
Paste any JSON — API response, webhook payload, or config file — and instantly get six schema formats: TypeScript interfaces, Zod, Valibot, JSON Schema Draft 7, OpenAPI 3.0 components, and Yup. 100% client-side.
Webhook Payload Transformer
Transform any JSON webhook into CSV, SQL, or automation format
Paste a Stripe, GitHub, Shopify, or custom webhook payload and transform it into CSV, SQL INSERT statements, or automation mapping format. 100% client-side — zero uploads.
Base64 Encoder / Decoder
Encode or decode Base64 text and files instantly
Encode any text or binary file to Base64, or decode Base64 back to text or a downloadable file. Supports URL-safe Base64. All processing is 100% client-side — nothing is uploaded.
UUID / ULID Generator
Generate UUID v4/v1/v5/v7 and ULID in bulk
Generate UUID v4, v1, v5, v7, and ULID. Bulk mode (1–100), multiple formats (standard, no-dashes, uppercase, braces), live bit breakdown of each version. 100% client-side via Web Crypto API.
Unix Timestamp Converter
Convert Unix timestamps to dates and back, with timezone support
Convert Unix timestamps (seconds or ms) to human-readable dates, convert dates back to timestamps, and see the live current timestamp. Timezone support, notable presets (epoch, Y2K, Y2K38), and code snippets for JS, Python, Go, Rust, and SQL.
CSV Cleanup Studio
Dedupe, fix encodings, and standardize messy CSVs — with AI for the fuzzy parts
Drop a messy CSV and clean it in your browser: dedupe rows, fix mojibake and encoding issues, standardize dates/phones/addresses, map and rename columns, and export clean CSV or JSON. AI-assisted normalization for the judgment calls. 100% client-side.
AI SQL Query Builder
Plain English → production SQL with explain and optimize
Describe your query in plain English and get back production-ready SQL with a full EXPLAIN output, index suggestions, and dialect options for Postgres, MySQL, and SQLite.
Text Diff Tool
Side-by-side diff with inline highlights and char-level changes
Paste two text blocks and see a word-level or character-level diff side by side. Supports unified and split views, ignores whitespace, and exports a patch file. 100% client-side.
HTML → Markdown Converter
Convert HTML to clean Markdown with table and code block support
Paste any HTML — blog post, email, Wikipedia table, Notion or Confluence export — and get clean Markdown. Handles pipe tables, fenced code with language, and inline styles. 5 use-case presets. 100% client-side.
Markdown Editor
Live preview, keyboard shortcuts, and export to .md or HTML
Write Markdown with a live split-pane preview. Toolbar with formatting buttons, keyboard shortcuts (Ctrl+B/I/K), word count, read-time estimate, auto-save to localStorage, and export to .md or .html. 100% client-side.
Text → Markdown Converter
Convert plain text, notes, and outlines to clean Markdown
Paste plain text from Word, email, or meeting notes. Auto-detects headings (ALL CAPS, setext underlines), bullets, numbered lists, and indented code blocks. Optional YAML frontmatter and Table of Contents. 100% client-side.
CSS Spinner Generator
Build animated loading spinners and export as CSS or React
Pick from 10 animated loading spinner styles — Ring, Dots, Wave Bars, Ripple, Flip, and more. Customize color, speed, size, and stroke weight, then copy the CSS or a ready-to-use React component.
Color Palette Generator
Generate harmonious color palettes from any seed color
Pick a seed color and instantly generate complementary, analogous, triadic, tetradic, split-complementary, or monochromatic palettes. Includes a Tailwind-style 11-step shade scale. Export as CSS custom properties, Tailwind config, or JSON.
CSS Gradient Generator
Build linear, radial, and conic CSS gradients visually
Build linear, radial, and conic CSS gradients with a visual editor. Multiple color stops, angle control, and 12 presets. Export as CSS, Tailwind arbitrary value class, React inline style, or SCSS variable.
Schema.org JSON-LD Generator
Build valid structured data for Google rich results
FAQ, Product, Event, Organization, Article and more. Real-time split editor with client-side validator. Copy or download JSON-LD.
OpenGraph Preview Tester
See how your link looks on LinkedIn, X, Slack & more
Preview link cards on LinkedIn, X, Slack, Discord, and Facebook. URL fetch or paste HTML. Detects missing OG tags with fix snippets.
Meta Tags Analyzer
Audit SEO, OG, Twitter Card, and JSON-LD meta tags for any URL
Enter any URL to fetch and analyze its HTML meta tags. Checks SEO (title, description, canonical), Open Graph, Twitter Card, technical tags (viewport, charset, hreflang), and JSON-LD structured data. Scores 0–100.
Privacy proof — try it yourself
Type anything below. Open DevTools → Network tab. Zero requests fired.
Input
Redactedsecrets hidden
DATABASE_URL=████████████████████ STRIPE_SECRET_KEY=████████████████████ OPENAI_API_KEY=████████████████████ JWT_SECRET=████████████████████ NEXT_PUBLIC_APP_URL=https://myapp.com
↑ Your input never leaves this tab. No network requests. Open DevTools and verify.
Why developers switch to Aarunya
Other tools upload your secrets to their servers
Zero server — your data never leaves the browser tab
Regex generators send your patterns to APIs you don't control
AI Regex uses a transparent, auditable proxy — only your plain-English description is sent, never your data
Complex, expensive SaaS for tools you use 3× a month
Free forever for core tools. Pro is $6/month or $79 for 2 years, not $49.
Shared .env files exposing production credentials
.env Sanitizer produces a safe .env.example in seconds — 100% in your browser
How we compare
| Feature | Aarunya Apps | Typical Tool | Enterprise SaaS |
|---|---|---|---|
| Data stays in your browser | ✅ | ❌ | ❌ |
| No account required | ✅ | Sometimes | ❌ |
| Free forever (core tools) | ✅ | Ad-supported | ❌ |
| Privacy by architecture | ✅ | ❌ | Policy only |
| Instant results | ✅ | Server round-trip | Server round-trip |
| Cost | Free / $6 Pro | Free + ads | $50–$500/mo |
Zero uploads
Your data never leaves your browser tab
No cookies
Cookie-free, anonymous analytics only
GDPR & CCPA
Compliant by architecture, not by policy
Every tool is free. AI credits are what you buy.
Every tool is free forever — AI-powered generation (which costs us per request) is the only thing behind Pro.
Free Forever
$0
- ✓ .env Sanitizer
- ✓ Schema Generator
- ✓ Email Signature
Most popular
Pro
$6/mo
- ✓ Unlimited AI generations (Regex now, SQL next)
- ✓ Unlimited OG & meta audits
- ✓ Saved outputs
- ✓ Priority support
Team — coming soon
$20/mo
- ✓ Up to 5 seats
- ✓ Team-shared history
- ✓ Custom branding
- ✓ Join the waitlist on the pricing page
30-day money-back guarantee · No questions asked
All tools are free forever. If Aarunya saves you time, buy us a coffee ☕
