# ShiftTools

> A curated suite of 34+ privacy-first, zero-upload micro-tools running 100% in your browser. All computations (WebAssembly, Canvas, WebAudio, WebCrypto, WebRTC) execute strictly in client RAM with zero server data ingestion.

## Core Utilities

- [Satellite LNB Calculator](https://shifttools.in/satellite-lnb-calculator/): Calculate STB Intermediate Frequency (950–2150 MHz), Local Oscillator mixing, 22kHz tones & cable loss.
- [QR Code Studio](https://shifttools.in/qr-generator/): Generate standard, Micro QR, rMQR & styled vector SVG QR codes with logo embedding and custom styling.
- [QR & Barcode Scanner](https://shifttools.in/qr-scanner/): Scan 2D QR codes and 1D retail barcodes with live hardware camera feed or local image drop.
- [Password & PIN Generator](https://shifttools.in/password-generator/): Generate cryptographically secure passwords, memorable Diceware passphrases, and PINs with live entropy scoring.
- [EXIF Privacy Scrubber](https://shifttools.in/exif-cleaner/): 100% Local In-Browser Metadata Inspector, GPS Stripper & Lossless Photo Anonymizer.
- [Video Compressor & Trimmer](https://shifttools.in/video-compressor/): Reduce video byte size and trim duration 100% locally in your browser memory.
- [Video Converter](https://shifttools.in/video-converter/): Convert, resize, and trim MP4, WebM, and GIF files locally using client-side FFmpeg WebAssembly.
- [Audio Converter](https://shifttools.in/audio-converter/): Convert MP3, WAV, AAC, FLAC & OGG, adjust volume, normalize audio, and trim audio tracks in browser.
- [Audio Spectral Analyzer](https://shifttools.in/audio-analyzer/): High-precision FFT spectrum, 2D waterfall spectrogram, oscilloscope, phase scope, and fundamental pitch detector.
- [AI Background Remover](https://shifttools.in/bg-remover/): Erase image backgrounds instantly with high precision using local on-device neural networks.
- [Image Resizer](https://shifttools.in/image-resizer/): Batch resize, crop, and compress JPG, PNG, and WEBP photos with precise pixel or percentage scaling.
- [Watermark Studio](https://shifttools.in/watermark-tool/): Stamp custom text, copyright notices, or logo badges onto images and video clips simultaneously.
- [Image Converter](https://shifttools.in/image-converter/): Fast batch converter across PNG, JPG, WEBP, AVIF, BMP, ICO & SVG with zero image degradation.
- [PDF Signer & Validator](https://shifttools.in/pdf-signer/): Standards-compliant PDF E-Sign, PKI Digital Signatures (.pfx/.p12), and certificate validation engine.
- [Image to PDF](https://shifttools.in/image-to-pdf/): Combine multiple JPG, PNG, WEBP & HEIC images into a clean, custom-sized PDF document.
- [PDF to Image](https://shifttools.in/pdf-to-image/): Extract high-resolution PNG, JPG, or WEBP images from individual PDF pages at custom DPI.
- [PDF Merge & Combiner](https://shifttools.in/pdf-merge/): Combine multiple PDF documents and page ranges into a single unified PDF in any order locally.
- [PDF Split & Range Divider](https://shifttools.in/pdf-split/): Split PDF files by custom page ranges, fixed intervals, or burst every page into a ZIP archive.
- [PDF Compress & Optimizer](https://shifttools.in/pdf-compress/): Shrink PDF file size using lossless object stream packing or high-ratio DPI downsampling.
- [ID & Aadhaar Masker](https://shifttools.in/aadhaar-masker/): Auto-detect & mask the first 8 Aadhaar digits (XXXX XXXX 1234), unlock e-Aadhaar PDFs, and flatten KYC cards.
- [PDF Rotate Pages](https://shifttools.in/pdf-rotate/): Rotate individual, odd, even, or all PDF pages by 90°, 180°, or 270° permanently without quality loss.
- [PDF Page Organizer](https://shifttools.in/pdf-organizer/): Visually reorder, duplicate, insert blank pages, reverse order, and rotate pages inside any PDF.
- [Delete PDF Pages](https://shifttools.in/pdf-delete-pages/): Click thumbnails or type page ranges to permanently remove unwanted pages from your PDF document.
- [Extract PDF Pages](https://shifttools.in/pdf-extract-pages/): Pull specific pages or ranges out of a PDF into a clean standalone PDF or individual files.
- [PDF Watermark Studio](https://shifttools.in/pdf-watermark/): Stamp custom diagonal, tiled, or corner text watermarks with adjustable opacity and color across PDF pages.
- [PDF Page Numbers & Bates](https://shifttools.in/pdf-page-numbers/): Insert formatted page numbers, "Page X of Y", or 6-digit legal Bates stamps onto headers and footers.
- [PDF Password Protect & Lock](https://shifttools.in/pdf-protect/): Harden PDFs by flattening editable text/copy layers, locking metadata, and stamping security notices.
- [PDF Unlock & Decryptor](https://shifttools.in/pdf-unlock/): Unlock password-protected PDFs (bank statements, e-Aadhaar, payslips) and save an unencrypted copy.
- [PDF Metadata Remover & Editor](https://shifttools.in/pdf-metadata-remover/): Inspect, edit, or wipe hidden Author, Creator, Producer, Title, and XMP tracking tags from PDFs.
- [PDF Redactor & Sanitizer](https://shifttools.in/pdf-redactor/): Permanently black out SSNs, emails, phone numbers, and custom bounding boxes with rasterized flattening.
- [PDF to Text & Markdown](https://shifttools.in/pdf-to-text/): Extract structured plain text, Markdown, or JSON with word-count metrics from any PDF document.
- [PDF Crop & Margin Trimmer](https://shifttools.in/pdf-crop/): Trim excess whitespace margins or crop PDF pages to custom bounding boxes across all pages.
- [PDF Form Filler & Flattener](https://shifttools.in/pdf-form-filler/): Fill interactive AcroForm fields, place free-floating text annotations, and flatten completed PDF forms.
- [PDF Compare & Visual Diff](https://shifttools.in/pdf-compare/): Compare two PDF revisions side-by-side with pixel diff heatmap overlay and line-by-line text comparison.
- [Store Package Extractor](https://shifttools.in/ms-store-downloader/): Extract official offline .MSIX, .AppX, and bundle installers from any Microsoft Store app link or Product ID.
- [ShiftDrop P2P Share](https://shifttools.in/shiftdrop/): Transfer files up to 5 GB directly device-to-device with zero cloud storage and encrypted WebRTC tunnels.
- [Crypto Live Radar](https://shifttools.in/crypto-chart/): Real-time TradingView candlestick charts & automated 14-period RSI technical dip radar for top coins.
- [URL Shortener](https://shifttools.in/url-shortener/): Fast, privacy-first link shortener with custom aliases, auto-cleanup & instant vector QR codes.
- [Subtitle Time Shifter](https://shifttools.in/subtitle-shifter/): Resync SRT & VTT subtitles, fix progressive framerate drift (25 to 23.976 FPS) & 2-point anchor calibration.
- [HAR Sanitizer & Redactor](https://shifttools.in/har-sanitizer/): Scrub passwords, session cookies, Bearer tokens & API keys from HTTP Archive logs before sharing.
- [Color Picker & Gradients](https://shifttools.in/color-picker/): Design beautiful multi-stop CSS & Tailwind gradients and convert color codes with WCAG checks.
- [Photo Collage Maker](https://shifttools.in/collage-maker/): Combine multiple photos into beautiful grid layouts, adjust borders, and export high-res.
- [JSON Formatter & Tree Visualizer](https://shifttools.in/json-formatter/): Format, validate, minify, sort keys, and inspect interactive hierarchical node trees 100% locally in browser memory.
- [Color Palette Extractor](https://shifttools.in/color-palette-extractor/): Extract cohesive dominant color palettes, HEX/RGB/HSL swatches, and CSS variables from any image.
- [CSV Cleaner & Formatter](https://shifttools.in/csv-cleaner/): Sanitize, deduplicate, filter, and format CSV datasets locally in browser memory.
- [Code & Text Diff Checker](https://shifttools.in/diff-checker/): Compare two text or code blocks line-by-line and character-by-character locally.
- [Multi-Format Encoder & Decoder](https://shifttools.in/encoder-decoder/): Encode and decode Base64, URL, HTML entities, Hex, Binary, and JWT tokens locally.
- [Favicon & App Icon Generator](https://shifttools.in/favicon-generator/): Generate multi-size ICO and PNG favicons, Apple Touch icons, and web manifests locally.
- [Animated GIF Maker](https://shifttools.in/gif-maker/): Create high-quality animated GIFs from video clips or image sequences in your browser.
- [Live Markdown Editor](https://shifttools.in/markdown-editor/): Write, preview, and export GitHub-flavored Markdown to HTML in real-time.
- [Regex Tester & Debugger](https://shifttools.in/regex-tester/): Test and debug regular expressions with real-time match highlighting and capture groups.
- [Screenshot Annotator & Blur Studio](https://shifttools.in/screenshot-annotator/): Annotate screenshots, draw arrows, add callout text, and blur sensitive regions locally.

## Engineering Guides & Whitepapers

- [Engineering Whitepaper](https://shifttools.in/about/): Architectural breakdown of local-first WASM, WebRTC, and WebCrypto.
- [Privacy Architecture Pledge](https://shifttools.in/privacy-policy/): Strict zero-upload and client RAM storage guarantee.
- [Blog Index](https://shifttools.in/blog/): 35 in-depth technical guides covering data serialization, audio spectrum analysis, and local-first computing.

- [Enterprise JSON Architecture: Schema Validation, Streaming & Serialization](https://shifttools.in/blog/how-to-use-json-formatter/): Master JSON Schema draft specs, streaming vs DOM parsers, jq CLI commands, and binary serialization benchmarks with private in-browser tools.
- [How to Compress Video Locally Free](https://shifttools.in/blog/how-to-compress-video-locally-free/): Learn how to compress video locally in your browser for free using WebAssembly FFmpeg. Shrink MP4 byte size with zero uploads and total privacy.
- [How to Sanitize HAR Files & Redact API Tokens Online](https://shifttools.in/blog/how-to-sanitize-har-files-redact-tokens-online/): Learn how to sanitize HTTP Archive HAR files, redacting auth bearer tokens, session cookies, and API keys locally in-browser with zero uploads.
- [How to Analyze Audio Frequencies & Spectrum Online](https://shifttools.in/blog/how-to-analyze-audio-frequencies-spectrum-online/): Learn how to analyze audio frequency spectrums, FFT spectrograms, oscilloscope waveforms, and pitch in your browser with the Web Audio API.
- [How to Remove EXIF Metadata & GPS Coordinates from Photos Online](https://shifttools.in/blog/how-to-remove-exif-metadata-gps-photos-online/): Learn how to inspect and scrub hidden GPS location tags, camera serial numbers, and timestamps from photos 100% in your browser with zero quality loss.
- [How to Create Custom Short Links Free Without Account](https://shifttools.in/blog/how-to-create-custom-short-links-free/): Learn how to shorten long URLs with custom vanity slugs, 20-day auto-cleanup, and HD vector QR code generation using private edge redirects.
- [How to Fix Subtitle Delay & Resync SRT/VTT Subtitles in Browser](https://shifttools.in/blog/how-to-fix-subtitle-delay-resync-srt-vtt/): Complete engineering guide on fixing SRT and WebVTT subtitle desync. Adjust constant delay, calculate 25 to 23.976 FPS drift, and calibrate anchors.
- [Image QR Code Scanner: How to Open a QR Code & Scan Pictures Online](https://shifttools.in/blog/how-to-scan-qr-code-online-camera-image/): Learn how to open and scan QR codes directly from pictures or webcam streams in your browser. Fast, free barcode extraction with zero uploads.
- [Free Encrypted Group Chat with No Account Required](https://shifttools.in/blog/free-encrypted-group-chat-no-account/): Discover private, account-free group chat using WebRTC peer-to-peer data channels, AES-256-GCM browser encryption, and volatile RAM ephemerality.
- [How to Add a Watermark to Image Free](https://shifttools.in/blog/how-to-add-watermark-to-image-video/): Learn how to watermark photos online for free using alpha blending, 45-degree tiled text, and PNG overlays with private batch browser processing.
- [How to Calculate Satellite LNB Frequencies & STB Intermediate Frequency (IF)](https://shifttools.in/blog/how-to-calculate-satellite-lnb-frequencies/): RF engineering guide on calculating satellite LNB frequencies, STB Intermediate Frequency (950-2150 MHz), LO heterodyne mixing, and 22kHz tones.
- [How to Convert Image Formats Free Online (PNG, JPG, WEBP, AVIF, ICO)](https://shifttools.in/blog/how-to-convert-image-formats-free-online/): Convert images between PNG, JPG, WebP, AVIF, and ICO formats in your browser. Fast, batch image conversion with client-side canvas processing.
- [How to Convert Images to PDF Free Online (JPG, PNG, WEBP, HEIC)](https://shifttools.in/blog/how-to-convert-images-to-pdf-free/): Merge JPG, PNG, WebP, and iPhone HEIC photos into a unified, high-resolution PDF document online for free with zero-upload client-side speed.
- [How to Convert MP3 to WAV Online Free](https://shifttools.in/blog/how-to-convert-mp3-to-wav-online-free/): Convert MP3 audio to uncompressed WAV in your browser. Learn sample rates, bit depths, PCM encoding, and zero-upload client-side audio decoding.
- [How to Convert PDF to Images Free Online (PNG, JPG, WEBP)](https://shifttools.in/blog/how-to-convert-pdf-to-images-free/): Extract PDF pages into crisp, high-resolution PNG, JPG, or WebP images online for free. Custom DPI scaling (72 to 600 DPI) with total privacy.
- [How to Convert Video to MP4 Free in Your Browser](https://shifttools.in/blog/how-to-convert-video-to-mp4-free-browser/): Convert WebM, MOV, MKV, and AVI videos to MP4 directly in your browser. Master FFmpeg WebAssembly, H.264/AVC codecs, and zero-upload processing.
- [How to Create a QR Code Free Online](https://shifttools.in/blog/how-to-create-qr-code-free/): Generate permanent, free QR codes online without subscriptions or sign-ups. Complete guide to Reed-Solomon error correction and vector SVG export.
- [How to Download Microsoft Store Apps Offline (.appx, .msix)](https://shifttools.in/blog/how-to-download-microsoft-store-apps-offline/): Learn how to extract direct Microsoft CDN links for .msix and .appxbundle packages to install apps on air-gapped Windows systems via PowerShell.
- [How to Generate Strong, Secure Passwords Online Free](https://shifttools.in/blog/how-to-generate-secure-passwords-online/): Learn how to generate cryptographically secure passwords using CSPRNG hardware entropy, Shannon calculations, and NIST 800-63B guidelines.
- [How to Read Bitcoin RSI Signals Live](https://shifttools.in/blog/how-to-read-bitcoin-rsi-signals-live/): Master Bitcoin Relative Strength Index (RSI) technical analysis, overbought/oversold levels, bullish divergence, and live WebSocket tickers.
- [How to Remove Background from Image Free in Your Browser](https://shifttools.in/blog/how-to-remove-background-from-image-free/): Learn how in-browser AI removes backgrounds from images using WebGPU neural networks, ONNX Runtime Web, and semantic segmentation with privacy.
- [How to Resize Images in Bulk for Free](https://shifttools.in/blog/how-to-resize-images-in-bulk-free/): Learn how to resize images in bulk online for free without losing quality. Master Lanczos resampling, aspect ratios, and client-side processing.
- [How to Share Large Files Without Cloud Storage](https://shifttools.in/blog/how-to-share-large-files-without-cloud/): Learn how to transfer large files peer-to-peer using WebRTC data channels, DTLS encryption, and direct LAN streaming without cloud size limits.
- [Sign a PDF Free Online: The Complete Private In-Browser Guide](https://shifttools.in/blog/how-to-sign-pdf-online-free/): Learn how to sign PDF documents free online without Adobe Acrobat. Draw signatures, place text, and download signed files with zero uploads.
- [The Ultimate Guide to Creating Stunning Photo Collages Online](https://shifttools.in/blog/how-to-use-collage-maker/): Master client-side photo collage creation, grid geometry mathematics, WebGL downsampling, aspect ratio management, and zero-upload rendering.
- [How to Extract Color Palettes from Images Automatically](https://shifttools.in/blog/how-to-use-color-palette-extractor/): Master color quantization algorithms, Median Cut, K-Means clustering in CIELAB space, WCAG 2.1 contrast ratios, and client-side CSS palettes.
- [Ultimate Guide to CSS Gradients & Color Theory](https://shifttools.in/blog/how-to-use-color-picker/): Master linear, radial, and conic CSS gradients, Oklab perceptual color interpolation, color harmony theory, and production-ready design tokens.
- [How to Clean and Format CSV Files Online Securely](https://shifttools.in/blog/how-to-use-csv-cleaner/): Master RFC 4180 CSV specifications, delimiter sniffing, UTF-8 BOM sanitization, deduplication hashing, and client-side zero-upload data cleaning.
- [How to Compare Code and Text Differences Locally](https://shifttools.in/blog/how-to-use-diff-checker/): Master the Myers diff algorithm, Longest Common Subsequence LCS mathematics, split vs unified views, and client-side zero-leak code comparison.
- [How to Encode and Decode Base64, URL, and HTML Entities](https://shifttools.in/blog/how-to-use-encoder-decoder/): Master Base64 binary encoding, RFC 3986 URL percent-encoding, HTML entity sanitization, and client-side UTF-8 data transformations in browser.
- [How to Generate Pixel-Perfect Favicons for Your Website](https://shifttools.in/blog/how-to-use-favicon-generator/): Master modern multi-resolution favicon packages, SVG dark-mode icons, Apple Touch Icons, Web App Manifests, and client-side Lanczos resampling.
- [How to Create High-Quality Animated GIFs from Videos](https://shifttools.in/blog/how-to-use-gif-maker/): Master GIF89a specifications, LZW compression, Floyd-Steinberg dithering, 256-color palette optimization, and in-browser video-to-GIF conversion.
- [How to Write and Preview Markdown in Real-Time](https://shifttools.in/blog/how-to-use-markdown-editor/): Master CommonMark and GFM specifications, synchronized dual-pane scroll algorithms, AST parsing, DOMPurify security, and offline Markdown editing.
- [Regex Expression Check: How to Test and Debug Regular Expressions Safely](https://shifttools.in/blog/how-to-use-regex-tester/): Test regular expressions, inspect capture groups, test character classes, backslash escapes, and prevent ReDoS vulnerabilities safely in-browser.
- [How to Annotate and Edit Screenshots Online](https://shifttools.in/blog/how-to-use-screenshot-annotator/): Master client-side screenshot annotation, Retina canvas scaling, vector drawing primitives, privacy redaction blur filters, and zero uploads.