All Tools Directory
Explore our complete catalog of browser-based utilities. All tools run 100% locally on your device for absolute privacy and maximum speed.
Developer Tools
(8)JSON Formatter
Format, beautify, minify, and validate JSON data instantly with syntax highlighting, error detection, and tree view.
Base64 Encoder & Decoder
Encode text, files, and images to Base64 format. Decode Base64 back to original content. Browser-based with image preview and file upload support.
URL Encoder & Decoder
Encode text to URL-safe format and decode percent-encoded URLs back to readable text. Supports UTF-8, Unicode, and SVG encoding.
JWT Decoder & Local Verifier
Decode and inspect JSON Web Tokens (JWT) entirely in your browser. Verify signatures locally with HS256/384/512, RS256/384/512, or ES256/384/512. Analyze claims, validate expiration times, check for security risks, and simulate clock skew with 100% offline, zero-knowledge privacy.
Markdown Live Editor
Write, edit, and preview Markdown in real time. Export rendered HTML or download your Markdown files. Full GFM support with live preview.
CSV Column Matcher
Fuzzy match two CSV columns online free — reconcile messy datasets with Levenshtein distance. Find near matches, typos, and inconsistencies across CSV columns in your browser with no uploads.
JSON Array Diff Tool
Compare two JSON arrays or deeply nested objects instantly in your browser with a recursive diff engine. Detect added, removed, and modified keys in API responses, configuration files, and massive enterprise datasets — all locally with zero uploads.
Markdown Checkbox List Extractor
Extract checked, unchecked, or all tasks from Markdown documents. Supports Obsidian, Notion, GitHub, GitLab, Logseq exports, and more. Fast regex-based parsing, Web Worker offloading, 100% browser-based — no uploads, complete privacy.
Text & List Tools
(14)Text Case Converter
Convert text to uppercase, lowercase, sentence case, title case, camelCase, snake_case, PascalCase, kebab-case, and more instantly.
Word Counter
Count words, characters, sentences, paragraphs, and reading time instantly.
Simple List A/B Comparator
Compare two lists instantly in your browser. Find shared items, unique items, differences, and duplicates across lists — all locally with no data uploads.
Character Counter
Count characters with and without spaces, words, sentences, paragraphs, and reading time instantly.
Lorem Ipsum Generator
Generate placeholder text instantly by paragraphs, words, or characters for layouts, mockups, and design work.
Cursive Generator
Convert normal text into cursive, script, and fancy Unicode styles instantly. Preview signature fonts and copy to clipboard.
Text to Handwriting Converter
Convert digital text into realistic handwritten pages. Choose from multiple handwriting fonts, paper styles, and ink colors. Download as PNG.
Duplicate Line Remover
Remove duplicate lines from text instantly in your browser. Fast, private deduplication for logs, lists, CSVs, and large files — all locally with no uploads.
Alphabetical List Sorter
Sort lists alphabetically with intelligent locale-aware sorting in your browser. Handle multilingual datasets, ignore case, sort by length, remove duplicates, and use natural number ordering — all locally with no uploads.
Multi-List Venn Diagram Generator
Compare 3 lists online to find overlaps, intersections, and unique values. Interactive 3-circle Venn diagram with clickable regions, O(N) set operations, and full export — all in your browser with no uploads.
Text Prefix/Suffix Appender
Add text to the beginning and end of every line instantly. Wrap lists with quotes, commas, HTML tags, SQL formatting, JSON brackets, and more — all in your browser with zero uploads.
Random List Generator & Shuffler
Randomly shuffle any list with cryptographically secure Fisher-Yates shuffle using Web Crypto API. Fair prize draws, unbiased randomization, and bulk list shuffling — all in your browser with zero uploads.
Case-Insensitive Deduplicator
Remove duplicate lines while ignoring letter case. Case-insensitive deduplication preserves the original capitalization of the first occurrence. Fast Set-based processing, Web Worker offloading, and 100% browser-based — no uploads, complete privacy.
IP Address List Comparator
Compare IPv4, IPv6, and CIDR subnet lists securely with high-performance browser-based processing. Supports mixed IP/CIDR formats, firewall blocklists, and access logs.
Image & Design Tools
(4)Color Converter
Convert colors between HEX, RGB, HSL, and CMYK formats instantly with a live color preview.
Image Compressor
Compress, resize, and convert JPG, PNG, and WebP images directly in your browser.
SVG Optimizer
Compress and clean up SVG files to optimize loading speed.
Instagram No Crop Tool
Fit full-size photos into Instagram-friendly aspect ratios without cropping. Add padding, solid colors, or blurred backgrounds, and export ready-to-post images.
Calculators
(3)Percentage Calculator
Calculate percentages, percentage increases, decreases, differences, and reverse percentages instantly. Free online percentage calculator with step-by-step solutions.
Loan Calculator
Calculate monthly loan payments, total interest, amortization schedules, and payoff timelines.
Numeric Tolerance Matcher
Compare two lists of numbers with a margin of error, absolute or percentage tolerance, currency support, and financial reconciliation in your browser — all locally with no uploads.
SEO & Marketing Tools
(3)Email List Deduplicator
Clean, validate, and deduplicate email lists securely in your browser. Remove invalid emails, find duplicates, analyze domains, and export cleaned lists — all locally with no uploads and zero PII exposure.
Domain Name Extractor & Comparator
Extract root domains from URLs and compare two lists instantly in your browser. Parse millions of URLs, normalize domains, strip subdomains, find shared and unique domains — all locally with no uploads.
Keyword Negative Matcher
Remove unwanted search terms and negative keywords from your bulk keyword lists client-side. Fast, private, and offline-ready.
Productivity & Time Tools
(1)Security & Privacy Tools
(23)Local EXIF Stripper
Completely remove hidden EXIF, GPS, camera specs, and privacy metadata from your photos locally. 100% private browser processing with zero uploads.
GPS Data Viewer & Forensic Inspector
Inspect hidden GPS coordinates, camera specs, and EXIF metadata inside your photos locally. 100% private client-side viewer.
Video Metadata Wiper
Inspect and remove privacy-sensitive metadata, GPS location tracks, and device specs from MP4 and MOV videos locally in your browser. 100% private.
Image Steganography Checker
Detect hidden text, secret messages, embedded files, and LSB steganography in images. 100% browser-based forensic analysis with zero uploads.
Batch Photo EXIF Cleaner
Remove EXIF metadata from hundreds of photos simultaneously — GPS, camera data, device info, and more. 100% browser-based with zero quality loss.
Camera Settings Extractor
Extract shutter speed, aperture, ISO, camera model, and lens info from any JPEG. Copy beautifully formatted camera settings for Instagram, Reddit, Flickr, or your photography blog. GPS and private metadata are automatically excluded.
Microsoft Office Document Wiper
Inspect and remove hidden metadata from DOCX files — author names, company info, revision history, tracked changes, comments, and document IDs. 100% browser-based. Nothing leaves your device.
Image Thumbnail Remover
Detect, preview, and permanently remove hidden EXIF thumbnails from JPEG images without affecting original photo quality. 100% browser-based forensic tool.
Audio Tag Stripper (MP3/WAV)
Remove ID3 tags, album artwork, comments, and private metadata from MP3 and WAV files entirely in your browser. Zero uploads. Lossless audio preservation.
Geotag Spoofer
Replace, inject, randomize, or remove GPS metadata from JPEG photos entirely in your browser. Interactive map picker, manual coordinate entry, lossless EXIF editing with zero uploads.
PNG Chunk Viewer & Remover
Inspect, analyze, and remove hidden metadata chunks from PNG files. Binary PNG chunk parser with full tEXt, zTXt, iTXt, and eXIf support. All processing happens in your browser with zero uploads and no quality loss.
EPUB Metadata & Privacy Editor
Inspect, edit, and sanitize EPUB metadata while preserving book content, formatting, and navigation. Full OPF metadata parser with three sanitization modes. 100% browser-side with zero uploads.
Privacy Image Blur & Redaction Tool
Blur faces, redact text, pixelate details, and censor private information in images. Interactive canvas editor with Gaussian blur, pixelation, black/white box, and mosaic modes. 100% browser-side with zero uploads.
Local File Encryptor & Decryptor
Encrypt and decrypt any file in your browser using AES-256-GCM encryption. Password-protect sensitive documents, images, and data with PBKDF2 key derivation. 100% client-side with zero uploads.
Secure Text Vault
Encrypt sensitive text messages in your browser using AES-256-GCM authenticated encryption with Argon2id key derivation. Zero-knowledge secure notes for passwords, API keys, and confidential messages. 100% client-side.
RSA Key Generator
Generate RSA public and private key pairs securely in your browser using the Web Crypto API. Create 2048-bit, 3072-bit, or 4096-bit RSA keys with RSA-OAEP padding and export to PEM, PKCS#8, SPKI, DER, or JWK formats. 100% client-side with zero uploads.
HKDF Key Derivation Tool
Derive cryptographic keys from a master secret using RFC 5869 HKDF (HMAC-based Key Derivation Function) in your browser. Supports SHA-256, SHA-384, SHA-512, configurable salt, info, and output length. Generate single or multiple derived keys instantly using the native Web Crypto API with zero server interaction.
OpenPGP Message Encryptor
Encrypt, decrypt, sign, and verify messages using OpenPGP.js in your browser. Supports multi-recipient encryption, digital signatures, ASCII-armored output, and GnuPG-compatible keys with AES-256 and SHA-256.
Secure Password Generator
Generate cryptographically secure passwords using your browser's Web Crypto API. Supports random passwords, memorable passwords, passphrases, PINs, Wi-Fi keys, hex secrets, and Base64 secrets with real-time entropy analysis and bulk generation.
Password Entropy Calculator
Check the mathematical entropy of any password or passphrase in your browser. Uses the Shannon formula L × log₂(R) to measure true password strength, detect weak patterns, estimate crack time, and compare Diceware passphrases — 100% client-side with zero uploads.
Cryptographic Secret Sharing Tool
Split a secret into secure M-of-N recovery shares with real Shamir Secret Sharing, or reconstruct it from the required threshold. Supports BIP39 seed phrases, keys, passwords, Base58/Hex/Base64 shares, QR codes, and offline recovery — entirely in your browser.
Cryptographic Hash Generator
Generate SHA-256, SHA-512, SHA-384, and SHA-1 hashes for files and text locally in your browser. Verify checksums with zero uploads, Web Crypto API support, Web Worker processing, and chunked large-file reading.
Large File Checksum Verifier
Verify file integrity by comparing local files against published MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums. Multi-GB support with Web Worker processing, zero uploads, and automatic algorithm detection.