UD5 Toolkit
Character Frequency Analyzer - Online Visual Heatmap of Text
Analyze letter/symbol frequency with an interactive bar chart and heatmap. Useful for breaking simple ciphers, linguistics, and SEO keyword analysis. Local processing.
Bidirectional Text Analyzer - Online RTL/LTR Detection
Bidirectional Text Analyzer
Detect and analyze RTL / LTR text direction, character‑level bidi classes, and hidden control characters instantly.
Enter Your Text
Frequently Asked Questions
Bidirectional text contains characters that flow from left‑to‑right (LTR), like English, and right‑to‑left (RTL), like Arabic or Hebrew. The Unicode Bidirectional Algorithm determines how mixed text is displayed correctly.
It examines every character in your input against known Unicode ranges for RTL scripts (Arabic, Hebrew, Syriac, Thaana, etc.) and also identifies neutral characters (spaces, digits, punctuation) and invisible bidi control codes (LRM, RLM, RLE, etc.).
Mixed RTL and LTR texts can appear jumbled if the environment does not correctly apply the bidi algorithm. Missing or misplaced bidi control characters (like LRM/RLM) or incorrect encoding often cause display issues.
Invisible characters (LRM, RLM, RLE, LRE, etc.) that tell the renderer to change text direction. This tool highlights them so you can debug direction problems in strings.
Yes, the analysis runs entirely in your browser. For performance with very long texts, you may disable the “Auto Analyze” option and use the manual Analyze button.
Text to Speech - Online Free TTS Reader & Converter
Type or paste text and have it read aloud by your browser's speech synthesis engine. Control voice, pitch, and rate. No download, works offline.
Keyword Extractor - Online Rapid Text Analysis
Paste any article and get a list of the most relevant keywords using a simple TF‑IDF‑like model. Skip stop words. All local.
English Text to IPA Converter - Online Phonetic Transcription
Convert English words into their International Phonetic Alphabet (IPA) representation. For pronunciation learning. Local.
Keyword Density Checker - Online SEO Text Analyzer
Analyze text for keyword frequency and density. Highlights over-optimized terms. Perfect for content writers and SEO editors. Entirely browser-based.
Tone Analyzer - Online Detect Emotion in Text
Paste text and get a rough analysis of its emotional tone (happy, sad, angry, etc.) based on keyword matching. Local.
Speech to Text Dictation - Online Live Transcribe
Use the Web Speech API to turn your spoken words into text with punctuation. Copy and paste anywhere. Privacy‑first.
Image Text Extractor (OCR) - Online Copy Text from Image
Extract text from images using basic OCR technology. Works best with clear, printed fonts. Completely local, images never leave your browser for privacy.
Morse Code to Text Translator - Online Decoder
Paste Morse code (dots and dashes) and translate it back to plain English text. Supports standard timing. Local.
Binary to Text Converter - Online Decode Bits to String
Paste binary sequences and convert them back to readable text. Supports space-separated and 8-bit formatted strings. Quick encoding reconversion.
Text Highlighter & Extractor - Online Annotate & Collect
Paste text, highlight important parts, and extract only highlights. Great for research and studying. Entirely client-side.
QR Code Scanner from Camera - Online Live Decode in Browser
Scan QR codes using your device camera. Decodes text, URLs, and Wi‑Fi credentials directly in the browser. No data sent to server.
PDF Text Extractor - Online Copy Text from PDF Without Upload
Extract plain text from a PDF file entirely in the browser using PDF.js. No file upload to server. Supports multi-page extraction and search.
QR Code Scanner (Upload Image) - Online Decode from File
Upload an image containing a QR code and decode its content. Works offline using JavaScript QR decoder. No camera needed.
PDF Text Extractor - Online Copy Text from PDF Locally
Extract selectable text from a PDF using the browser's built‑in PDF rendering. Copy or download as TXT. No upload, fully private.
Hex to Text Converter - Online Hexadecimal Decoder
Decode hexadecimal values back to human-readable text. Ideal for debugging and data recovery. Works fully offline in your browser, keeping your data secure.
Phonetic Alphabet to Text - Online Decode Alpha Bravo
Reverse the NATO phonetic alphabet. Paste 'Bravo Romeo Alpha Victor Oscar' and get 'Bravo'. Essential for call center transcripts.
Live Barcode/QR Scanner - Online Camera Decoder
Open your camera and scan barcodes or QR codes in real time. Uses ZXing JS. No data sent anywhere.
Web Page Resource Analyzer - Online List Assets & Size
Fetch a page and list all loaded assets (CSS, JS, images) with their sizes. See total page weight. Quick performance check.
Screen Reader Text Optimizer - Online Improve Alt & Link Text
Analyze text for screen reader friendliness: detect vague link text, missing alt suggestions. Get a report. Local.
Wi‑Fi QR Code Generator - Online Join Network Scan
Create a QR code that lets people connect to your Wi‑Fi without typing a password. Just scan and join. Secure local.
Offline Page Detector - Online See Cached Content
Check if the current page can be loaded offline by examining the service worker cache. Developer tool for PWAs.
Text Diff Checker - Online Compare & Find Differences
Compare two text blocks and highlight differences line by line. Ideal for code review and document revisions. All diffs computed locally for privacy.
PDF Text Extractor - Online Copy All Text Locally
Drop a PDF and extract the full text content. Processed locally using PDF.js. No upload. Fast and private.
Bias Detector Tool - Online Check Text for Subjective Language
Analyze text for subjective and emotionally charged words. Helps identify potential bias in writing. Purely heuristic, local operation.
text‑orientation Tester - Online Upright & Sideways Glyphs
Change text orientation within vertical writing mode. See mixed, upright, sideways. Useful for CJK layout.
Live Site Contrast Checker - Online Audit By URL
Enter a URL and fetch its text/background colors to perform a bulk contrast check. See warnings for WCAG violations.
Steganography Text Hider - Online Conceal Secret Message
Hide a secret message inside a normal text using zero-width characters or invisible ink. Copy the result. Decode with the same tool.
QR Code Scanner - Online Scan QR from Camera or Image
Scan QR codes using your device camera or by uploading an image. Instant decoding of URLs, texts, and more. No data sent to server, pure browser processing.
Text to Binary & Binary to Text Converter - Online Translator
Convert text into binary digits and decode binary back to readable text. Handy for education and computer science. All conversions performed locally in your browser.