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Every tool is tagged with a privacy tier. Use this matrix to audit data flows before you paste or upload — most tools never leave your browser.
100% local
338
Runs entirely in your browser. Input is not sent to our servers.
Heavy WASM
26
Uses WebAssembly (FFmpeg, qpdf, Tesseract, etc.). Still local — may download WASM on first use.
Uses server
3
Contacts our or third-party servers (HTTP tools, file share, DNS lookup).
367 tools shown
| Tool | Category | Privacy tier |
|---|---|---|
| .env File Parser | Developer | 100% local |
| .gitignore Generator | Developer | 100% local |
| 3D & CAD Light | Developer | 100% local |
| Add Days to Date | Calculator | 100% local |
| Add Line Breaks | Text | 100% local |
| Add Line Numbers | Text | 100% local |
| Add Prefix & Suffix | Text | 100% local |
| Age Calculator | Calculator | 100% local |
| Alternating Case | Text | 100% local |
| Anchor Link Generator | SEO & Marketing | 100% local |
| API Key Generator | API & Network | Heavy WASM |
| API Studio | API & Network | 100% local |
| ASCII Art | Text | 100% local |
| Aspect Fit | Image | 100% local |
| Aspect Ratio Calculator | Calculator | 100% local |
| Atbash Cipher | Text | 100% local |
| Audio Studio | Video | 100% local |
| Automation Studio | Developer | 100% local |
| Bacon Cipher | Text | 100% local |
| Base32 Encoder | Developer | 100% local |
| Base58 Encoder | Crypto & Security | 100% local |
| Base64 Encoder / Decoder | Developer | 100% local |
| Base64 URL Encode | Developer | 100% local |
| Batch URL Encode | Developer | 100% local |
| Batch UUID Generator | Crypto & Security | 100% local |
| Bcrypt Hash | Crypto & Security | 100% local |
| Binary ↔ Text Converter | Converter | 100% local |
| Binary to Text | Text | 100% local |
| Blank PDF Pages | 100% local | |
| BMI Calculator | Calculator | 100% local |
| BMR Calculator | Calculator | 100% local |
| Break-Even Calculator | Finance | 100% local |
| Bubble Text | Text | 100% local |
| Bytes Unit Converter | Converter | 100% local |
| Caesar Brute Force | Text | 100% local |
| Caesar Cipher / ROT13 | Crypto & Security | 100% local |
| Calculator Studio | Calculator | 100% local |
| Case Converter | Text | 100% local |
| Change Video Speed | Video | Heavy WASM |
| Character Statistics | Text | 100% local |
| chmod Calculator | Developer | 100% local |
| CMYK to RGB | Color | 100% local |
| Code Studio | Developer | 100% local |
| Coin Flip | Calculator | 100% local |
| Collapse Whitespace | Text | 100% local |
| Color & Brand Studio | Design | 100% local |
| Color Contrast Checker | Color | 100% local |
| Color Converter & Picker | Color | 100% local |
| Color Mixer | Color | 100% local |
| Color Shades Generator | Color | 100% local |
| Combinations nCr | Calculator | 100% local |
| Compound Interest Calculator | Finance | 100% local |
| Converter Studio | Converter | 100% local |
| Cookie Policy Generator | 100% local | |
| Count Lines | Text | 100% local |
| Count Occurrences | Text | 100% local |
| CRC32 Calculator | Crypto & Security | 100% local |
| Credit Card Mask | Crypto & Security | 100% local |
| Credit Card Validator | Developer | 100% local |
| Cron Builder | Developer | 100% local |
| Cron Expression Explainer | Developer | 100% local |
| Cron Parser | Developer | 100% local |
| Cron Validator | Developer | 100% local |
| CSP Decoder | Developer | 100% local |
| CSS Minifier | Developer | 100% local |
| CSV to JSON Converter | Developer | 100% local |
| CSV to Lines | Text | 100% local |
| cURL Command Generator | API & Network | Heavy WASM |
| Current Timestamp | Developer | 100% local |
| Data Rate Converter | Converter | 100% local |
| Data Studio | Developer | 100% local |
| Database Studio | Developer | 100% local |
| Date Difference Calculator | Calculator | 100% local |
| Datenschutz Generator | 100% local | |
| Days Until Date | Calculator | 100% local |
| Design Studio | Design | 100% local |
| Dice Roller | Calculator | 100% local |
| Distance Calculator | Calculator | 100% local |
| Dockerfile Linter | Developer | 100% local |
| Document Studio | 100% local | |
| Dominant Color | Image | 100% local |
| Download Time | Calculator | 100% local |
| Duplicate Lines | Text | 100% local |
| Duplicate Paragraph Finder | Text | 100% local |
| Duplicate PDF Pages | 100% local | |
| E-Rechnung Studio | 100% local | |
| EAN Validator | Developer | 100% local |
| Education Studio | Text | 100% local |
| Email Studio | Text | 100% local |
| Email Validator | Crypto & Security | 100% local |
| Env File Diff | Developer | 100% local |
| Epoch Milliseconds | Developer | 100% local |
| Escape HTML | Developer | 100% local |
| Extract @Mentions | Text | 100% local |
| Extract Audio from Video | Video | Heavy WASM |
| Extract Domains | Text | 100% local |
| Extract Emails | Text | 100% local |
| Extract Hashtags | Text | 100% local |
| Extract IP Addresses | Text | 100% local |
| Extract JSON | Developer | 100% local |
| Extract Numbers | Text | 100% local |
| Extract URLs | Text | 100% local |
| Factorial Calculator | Calculator | 100% local |
| Fake CSV Generator | Text | 100% local |
| Fake JSON Generator | Text | 100% local |
| Fibonacci Generator | Calculator | 100% local |
| File Share | Converter | Uses server |
| File Studio | Developer | 100% local |
| Finance Studio | Finance | 100% local |
| Find & Replace | Text | 100% local |
| Flexbox CSS Generator | Design | 100% local |
| Flip Image Horizontal | Image | 100% local |
| Flip Image Vertical | Image | 100% local |
| Fuel Cost Calculator | Calculator | 100% local |
| GCD & LCM Calculator | Calculator | 100% local |
| GeoJSON Bounding Box | Developer | 100% local |
| GeoJSON Formatter | Developer | 100% local |
| GeoJSON Minify | Developer | 100% local |
| GeoJSON Validator | Developer | 100% local |
| GraphQL Formatter | API & Network | Heavy WASM |
| Hash Generator | Crypto & Security | 100% local |
| Hash Identifier | Developer | 100% local |
| Heading Extractor | SEO & Marketing | 100% local |
| Hex Decoder | Developer | 100% local |
| Hex Encoder | Developer | 100% local |
| Hex to RGB | Color | 100% local |
| HMAC Generator | API & Network | Heavy WASM |
| Hourly Salary | Finance | 100% local |
| HSL to RGB / Hex | Color | 100% local |
| HTML Entity Encoder | Developer | 100% local |
| HTML Entity Encoder / Decoder | Developer | 100% local |
| HTML Minifier | Developer | 100% local |
| HTML Studio | Developer | 100% local |
| HTML Table Generator | Design | 100% local |
| HTML to Plain Text | Developer | 100% local |
| HTTP Header Diff | Developer | 100% local |
| HTTP Request Tester | API & Network | Uses server |
| HTTP Status Codes | API & Network | Heavy WASM |
| IBAN Validator | Developer | 100% local |
| Image Blur | Image | 100% local |
| Image Brightness | Image | 100% local |
| Image Compressor | Image | 100% local |
| Image Contrast | Image | 100% local |
| Image Format Converter | Image | 100% local |
| Image Grayscale | Image | 100% local |
| Image Resizer | Image | 100% local |
| Image Saturation | Image | 100% local |
| Image Studio | Image | 100% local |
| Image to Base64 | Image | 100% local |
| Images to PDF | 100% local | |
| Impressum Generator | 100% local | |
| Indent Text | Text | 100% local |
| Inflation Calculator | Calculator | 100% local |
| Invert Case | Text | 100% local |
| Invert Image Colors | Image | 100% local |
| IPv4 Validator | Crypto & Security | 100% local |
| IPv6 Compress | Developer | 100% local |
| ISBN Validator | Crypto & Security | 100% local |
| JavaScript Minifier | Developer | 100% local |
| Join Lines | Text | 100% local |
| JSON ↔ YAML Converter | Developer | 100% local |
| JSON Flatten | Developer | 100% local |
| JSON Formatter & Validator | Developer | 100% local |
| JSON Minify | Developer | 100% local |
| JSON Path Finder | API & Network | Heavy WASM |
| JSON Pointer | Developer | 100% local |
| JSON Pretty Print | Developer | 100% local |
| JSON Schema Generator | Developer | 100% local |
| JSON Schema Validator | Developer | 100% local |
| JSON Sort Keys | Developer | 100% local |
| JSON String Escaper | Developer | 100% local |
| JSON to XML | Developer | 100% local |
| JWT Builder | Developer | 100% local |
| JWT Decoder | Developer | 100% local |
| JWT Expiry Check | Developer | 100% local |
| Keyword Density | SEO & Marketing | 100% local |
| Leetspeak | Text | 100% local |
| Legal & Compliance | 100% local | |
| Letter Studio | 100% local | |
| Levenshtein Distance | Text | 100% local |
| Lines to CSV | Text | 100% local |
| Loan Calculator | Finance | 100% local |
| Lorem by Word Count | Text | 100% local |
| Lorem Ipsum Generator | Text | 100% local |
| Lottery Number Picker | Calculator | 100% local |
| Luhn Check | Developer | 100% local |
| Luhn Validator | Crypto & Security | 100% local |
| MAC Formatter | API & Network | Heavy WASM |
| Map & Geo Studio | Developer | 100% local |
| Markdown Table | Text | 100% local |
| Markdown Table Formatter | Text | 100% local |
| Markdown Table Generator | Text | 100% local |
| Markdown to HTML | Developer | 100% local |
| Markup Calculator | Finance | 100% local |
| Mean, Median, Mode | Calculator | 100% local |
| Merge Videos | Video | Heavy WASM |
| Meta Description Checker | SEO & Marketing | 100% local |
| Meta Title Counter | SEO & Marketing | 100% local |
| Morse Code Translator | Text | 100% local |
| Morse Encoder | Text | 100% local |
| Mortgage Calculator | Finance | 100% local |
| Music & Audio Pro | Video | Heavy WASM |
| Mute Video | Video | Heavy WASM |
| N-Gram Analyzer | Text | 100% local |
| Nano ID Generator | Crypto & Security | 100% local |
| Number to Words | Text | 100% local |
| OAuth PKCE Generator | API & Network | Heavy WASM |
| OCR & Scan Studio | 100% local | |
| Office Studio | 100% local | |
| OpenAPI Diff | Developer | 100% local |
| Palindrome Checker | Text | 100% local |
| Password Strength | Crypto & Security | 100% local |
| PayPal Fee Calculator | Finance | 100% local |
| PDF Black & White | 100% local | |
| PDF Compress | 100% local | |
| PDF Crop | 100% local | |
| PDF Extract Pages | 100% local | |
| PDF Grayscale | 100% local | |
| PDF Header & Footer | 100% local | |
| PDF Info | 100% local | |
| PDF Lock | 100% local | |
| PDF Margin Editor | 100% local | |
| PDF Merge | 100% local | |
| PDF Metadata Editor | 100% local | |
| PDF N-up Printing | 100% local | |
| PDF Page Numbers | 100% local | |
| PDF Page Organizer | 100% local | |
| PDF Resize to A4 | 100% local | |
| PDF Reverse Pages | 100% local | |
| PDF Rotate Pages | 100% local | |
| PDF Split | 100% local | |
| PDF to Images | 100% local | |
| PDF to Text | 100% local | |
| PDF Unlock | 100% local | |
| PDF Watermark | 100% local | |
| PDF Workspace | 100% local | |
| PEM Parser | Developer | 100% local |
| Percentage Change | Calculator | 100% local |
| Permutations nPr | Calculator | 100% local |
| Phone Formatter | Text | 100% local |
| Phone Number Format | Developer | 100% local |
| PIN Generator | Crypto & Security | 100% local |
| Pixelate Image | Image | 100% local |
| Pomodoro Timer | Calculator | 100% local |
| Prime Factorization | Calculator | 100% local |
| Prime Number Checker | Calculator | 100% local |
| Print Studio | 100% local | |
| Privacy Policy Generator | 100% local | |
| Productivity Studio | Calculator | 100% local |
| Profit Margin | Finance | 100% local |
| Properties to JSON | Developer | 100% local |
| Punycode Encoder | Developer | 100% local |
| QR Code Reader | Image | 100% local |
| Quadratic Solver | Calculator | 100% local |
| Rail Fence Cipher | Text | 100% local |
| Random Color | Color | 100% local |
| Random Data Generator | Text | 100% local |
| Random Hex | Crypto & Security | 100% local |
| Random Number Generator | Calculator | 100% local |
| Random String Generator | Crypto & Security | 100% local |
| Ratio Calculator | Calculator | 100% local |
| Readability Score | SEO & Marketing | 100% local |
| Reading Time Estimates | Text | 100% local |
| Reading Time Estimator | Text | 100% local |
| Regex & Parser Lab | Developer | 100% local |
| Regex Escape | Developer | 100% local |
| Regex Tester | Developer | 100% local |
| Remove Accents | Text | 100% local |
| Remove Emojis | Text | 100% local |
| Remove PDF Pages | 100% local | |
| Remove Punctuation | Text | 100% local |
| Repeat Text | Text | 100% local |
| Resize Video | Video | Heavy WASM |
| Reverse Word Order | Text | 100% local |
| RGB to Hex | Color | 100% local |
| ROI Calculator | Finance | 100% local |
| Roman Numeral Converter | Converter | 100% local |
| Roman Numerals | Text | 100% local |
| ROT13 Encoder | Text | 100% local |
| Rotate Image 90° | Image | 100% local |
| Rotate Video | Video | Heavy WASM |
| Running Pace Calculator | Calculator | 100% local |
| Sales Tax Calculator | Finance | 100% local |
| Schema Studio | Developer | 100% local |
| Security Studio | Crypto & Security | 100% local |
| Semver Bump | Developer | 100% local |
| SemVer Comparator | Developer | 100% local |
| Semver Diff | Developer | 100% local |
| Sentence Case | Text | 100% local |
| Sepia Filter | Image | 100% local |
| Shuffle Characters | Text | 100% local |
| Shuffle Lines | Text | 100% local |
| Signature Studio | 100% local | |
| Simplify Aspect Ratio | Design | 100% local |
| Sleep Cycle Calculator | Calculator | 100% local |
| Slug Generator | SEO & Marketing | 100% local |
| Slugify | Text | 100% local |
| Slugify Lines | Text | 100% local |
| Small Caps | Text | 100% local |
| Social Media Studio | Design | 100% local |
| Sort Lines | Text | 100% local |
| Sort Words | Text | 100% local |
| Split Bill | Calculator | 100% local |
| Split Text | Text | 100% local |
| SQL Formatter | Developer | 100% local |
| SQL INSERT Generator | Developer | 100% local |
| SQL Keyword Uppercase | Developer | 100% local |
| SRT Shift | Video | Heavy WASM |
| SRT to VTT | Video | Heavy WASM |
| Standard Deviation | Calculator | 100% local |
| String Byte Length | Developer | 100% local |
| Strip BOM | Developer | 100% local |
| Strip Markdown | Text | 100% local |
| Subnet / CIDR Calculator | API & Network | Heavy WASM |
| Subtitle Studio | Video | Heavy WASM |
| Tax Calculator (DE) | Calculator | 100% local |
| Terms of Service Generator | 100% local | |
| Text Compress | Text | 100% local |
| Text Diff Checker | Text | 100% local |
| Text Processing Hub | Text | 100% local |
| Text Reverser | Text | 100% local |
| Text to Binary | Text | 100% local |
| Timezone Converter | Converter | 100% local |
| Tip Calculator | Finance | 100% local |
| TOML to JSON | Developer | 100% local |
| Trim Lines | Text | 100% local |
| Trim Whitespace | Text | 100% local |
| TSV ↔ CSV Converter | Developer | 100% local |
| Typing Speed (WPM) | Text | 100% local |
| ULID Generator | Crypto & Security | 100% local |
| Unescape HTML | Developer | 100% local |
| Unicode Character Info | Developer | 100% local |
| Unicode Normalize | Text | 100% local |
| Unit Converter | Converter | 100% local |
| Unit Price Calculator | Finance | 100% local |
| Upside Down Text | Text | 100% local |
| URL Encoder / Decoder | Developer | 100% local |
| URL Parser | Developer | 100% local |
| User-Agent Parser | API & Network | Heavy WASM |
| UTM Link Builder | SEO & Marketing | 100% local |
| UUID Generator | Crypto & Security | 100% local |
| UUID Inspector | Developer | 100% local |
| UUID v7 Generator | Crypto & Security | 100% local |
| VAT Calculator | Finance | 100% local |
| Video Compressor | Video | Heavy WASM |
| Video Converter | Video | Heavy WASM |
| Video Info | Video | Heavy WASM |
| Video Thumbnail | Video | Heavy WASM |
| Video to GIF | Video | Heavy WASM |
| Video Trimmer | Video | Heavy WASM |
| Video Workspace | Video | 100% local |
| Vigenère Cipher | Text | 100% local |
| Water Intake | Calculator | 100% local |
| Web & SEO Studio | SEO & Marketing | 100% local |
| Webhook Payload Formatter | API & Network | Uses server |
| Week Number | Calculator | 100% local |
| WKT Converter | Developer | 100% local |
| Word & Character Counter | Text | 100% local |
| Word Frequency Counter | Text | 100% local |
| Word Wrap | Text | 100% local |
| Workdays Between | Calculator | 100% local |
| Workflow Studio | Developer | 100% local |
| XML Formatter | Developer | 100% local |
| XML to JSON | Developer | 100% local |
| XML Validator | Developer | 100% local |
| YAML Validator | Developer | 100% local |
| Zalgo Text | Text | 100% local |
Tiers are assigned per tool. Studios inherit the tier of the active mode. Server tier does not mean we store your content — see each tool's page for details.
Full policy: Privacy policy · Session privacy dashboard
